HomeMy WebLinkAboutCOUNCIL - AGENDA ITEM - 05/20/2008 - ITEMS RELATING TO THE ADOPTION OF THE 2006 INTERNA ITEM NUMBER: 14 A-B
AGENDA ITEM SUMMARY DATE: May 20, 2008
FORT COLLINS CITY COUNCIL STAFF: Felix Lee
Mike Gebo
SUBJECT
Items Relating to the Adoption of the 2006 International Building Code (IBC), 2006 International
Energy Conservation Code (IECC) and Local Amendments.
RECOMMENDATION
Staff recommends adoption of these Ordinances on Second Reading.
EXECUTIVE SUMMARY
A. Second Reading of Ordinance No. 049, 2008, Amending Chapter 5, Article II, Division 2,
of the City Code for the Purpose of Adopting the 2006 International Building Code®, with
Amendments.
B. Second Reading of Ordinance No. 050, 2008, Amending Chapter 5, Article II, Division 2,
of the City Code For the Purpose of Adopting the 2006 International Energy Conservation
Code®, with Amendments.
The 2006 IBC and the 2006 IECC are the most up-to-date editions of the model building codes
available that apply to newly constructed commercial, industrial and multi-family buildings (3 or
more units),and new additions to such existing buildings. These Ordinances,unanimously adopted
on First Reading on May 6, 2008, replace the obsolete 1997 Uniform Building Code (UBQ and
companion energy code regulating multi-family and commercial buildings.
Ordinance No. 050, 2008 was revised between First and Second Reading to add some technical
provisions that had been omitted. Specifically these short amendments address increased below-
grade wall insulation and concrete slab-on-ground insulation required in new multi-family and
commercial buildings,that were recommended by the code review committee. Additionally,a few
words of superfluous and redundant language in another amendment were removed.
ATTACHMENTS
1. Copy of First Reading Agenda Item Summary- May 6, 2008.
(w/o original attachments)
ATTACHMENT
ITEM NUMBER: 26 A-B
AGENDA ITEM SUMMARY DATE: May 6, 2008
FORT COLLINS C O I SXAFF: Felix Lee
)LP 'V Mike Gebo
SUBJECT
Items Relating to the Adoption of the 20061nternational Building Code (IBC), 20061nternational
Energy Conservation Code (IECC) and Local Amendments.
RECOMMENDATION
Staff recommends adoption of the Ordinance on First Reading.
The Affordable Housing Board,the Commission on Disability,the Planning and Zoning Board,the
Electric Board, the Natural Resources Advisory Board, the Air Quality Advisory Board and the
Building Review Board voted to approve adoption of the proposed 2006IBC, 2006IECC codes and
local amendments. Y
EXECUTIVE SUMMARY C 0 P
A. First Reading of Ordinance No. 049, 2008, Amending Chapter 5, Article II, Division 2, of
the City Code for the Purpose of Adopting the 20061nternational Building Code®, with
Amendments.
B. First Reading of Ordinance No. 050, 2008, Amending Chapter 5, Article II, Division 2, of
the City Code For the Purpose of Adopting the 2006 International Energy Conservation
Code®, with Amendments.
The 2006International Building Code(IBC)and the 2006International Energy Conservation Code
(IECC) are the most up-to-date editions of the model building codes available that apply to newly
constructed commercial,industrial and multi-family buildings(3 or more units),and new additions
to such existing buildings. Staff is presenting these codes and local amendments for adoption to
replace the obsolete 1997 Unifo ild' d coppanion energy code regulating
multi-family and commercialt
ng .
IL Y
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BACKGROUND
Fort Collins has a legacy of innovative local code provisions that enhance public health and safety,
offer construction flexibility, and improve energy efficiency and indoor air quality. In anticipation
of the eventual transition to the new model building codes — the International Codes (I-Codes)
developed by the International Code Council — several of these innovations were deliberately
May 6, 2008 -2- Item No. 26 A-B
included as local amendments into the City's current 1997 UBC, adopted mid-1998; and again in
2004,when the City adopted the first of the I-Code series. This last building-code package approved
by Council contains the 2003 International Residential Code (IRQ ® (covering any new, and
additions to, single-family and it li d es), as well as the ancillary I-
Codes applicable to all new repl ent V C ea entilating, or cooling) systems,
plumbing systems, and gas-pi g instal ions 1-famil uildings (three or more units)and
in all other types of nonresident di i-
In August 2006, the Code Review Committee began the task of reviewing the 2006 IBC and 2006
IECC as the replacement for the UBC, to regulate the construction of all new, and additions to,
nonresidential buildings and multi-family buildings. This committee is composed of members from
the Poudre Fire Authority, Building Review Board, Larimer County Building Department, private
developers,builders,architects,engineers and City staff. The team concluded its review of the 2006
IBC and 2006 IECC, plus the cumulative mid-cycle code update, the 2007 Supplements and local
amendments in early April. The Code Review Committee came to a final consensus recommending
the proposed codes and amendments to City Council for adoption.
Staff first presented the results of the Code Review Committee's recommendations on the 2006
IBC/IECC at the April 24,2007 Work Session. At that time,staff recommended the adoption of the
proposed 2006 IBC/IECC be postponed until review and incorporation of the 2007 Supplements,
published in July 2007. Furthe in ' it d�c,radon-resistant construction
standards in new single- and -fam 1 well s o "ses'since 2005, Council directed
staff to investigate local amen ents f man o radon-re stant construction in multi-family
housing containing three or mo in to. vide a protection for all City residents.
At the January 22, 2008 Work Session, staff presented the proposed code and amendments,
including the 2007 Supplements, the 2006 IECC and radon-resistant construction amendments.
Council directed staff to provide additional information at the scheduled regular Council meeting.
Attachment 2 provides this additional information.
Significant Changes
The major improvements from the current code to the proposed 2006 IBC, 2006 IECC and local
amendments are:
• A fundamental strategic shift in protecting buildings and its occupants from the immediate
spread of fire through the use of fire sprinkler systems instead of using additional building
materials to detain the s el pfOpti
Mandatory radon-resis t consfami dwellings with three (3) or more
units; and
• More energy-conserving construction via the very latest technical standard available.
Costs
The estimated added construction costs include:
May 6, 2008 -3- Item No. 26 A-B
• Fire sprinkler systems initial cost offset by less expensive construction materials with added
benefit of greater occupant safety and insurance savings.
• Radon resistant construe ' ' MWn—hwmi4mw@fit iryer dwelling unit $500 to $700.
• Insulation cost increas roof an jall)�.:
I,.✓ IF
0 Commercial roofs no attic - none
o Roof insulation attic - $0.90 per square foot
o Wall insulation wood frame— $0.18 per square foot
o Wall insulation metal frame - $1.00 per square foot
ISO Insurance Rating/Building Code Effectiveness
FEMA notified the City last November that Fort Collins was at risk of losing its long-standing,
highly desirable flood insurance discount rating for multi-family and business properties because
Fort Collins has not yet adopted the IBC. Insurance rates are largely determined by an individual
jurisdiction's"building code effectiveness"ranking using a standardized grading system known as
the "Building Code Effectiveness Grading Schedule (BCEGS)".
On April 15, 2008, at the City's t, se a onal Insurance Service Office
(ISO) conducted an in-depth, -site i iew o to 20-page evaluation instrument.
The representative indicated t City��}y d lik tain a fa rable rating, conditional upon ISO
receiving notification of Fort Co,-elm
form o the I thin the next two months. ISO's
report,expected in about 90 days,will be newly formatted to identify areas where the City could or
might need improvement and what that improvement would look like.
Public Outreach & Recommendations
• Affordable Housing Board—5/3/07; recommended unanimously
• Commission on Disability—6/14/07; recommended unanimously
• Planning and Zoning Board—8/10/07; recommended unanimously
• Electric Board— 1/16/08; recommended unanimously
• Public Outreach Meeting— 1/9/08; general consensus for adoption
• Natural Resources Advisory Board— 1/16/08; recommended unanimously
• Building Review Board— 1/31/08; recommended unanimously
• Air Quality Advisory Board-- 3/24/08; recommended unanimously
_DY
Recommended Timeline an ffect v ate
1. Second Reading 5/20/08.
2. Effective date: July 1,2008. Transition period for construction professionals,and for staff
to prepare educational material, workshops, and update license exams.
3. Training for staff and construction professionals— Scheduled for June, Sept., Dec. 2008.
4. Reevaluation of building code rating when ISO officially notified of IBC's effective date.
May 6, 2008 -4- Item No. 26 A-B
ATTACHMENTS
1. Work Session SummaCessi
2 008.
2. Staff responses toWor es3. Boazd and commissio4. Power Point presentat
ORDINANCE NO. 049, 2008
OF THE COUNCIL OF THE CITY OF FORT COLLINS
AMENDING CHAPTER 5, ARTICLE II, DIVISION 2, OF THE CITY CODE
FOR THE PURPOSE OF ADOPTING THE 2006 INTERNATIONAL
BUILDING (IBC)®, WITH AMENDMENTS
WHEREAS,the current general building code adopted by City is based on the last and final
version of the defunct UNIFORM BUILDING CODE, 1997 EDITION, published by the former
International Conference of Building Officials (ICBO),as enacted in May 1998; and
WHEREAS, since 2000, ICBO dissolved following its merger with the other two former
nationally prominent building-code promulgating organizations,to emerge as the International Code
Council(ICC)®; and
WHEREAS thousands of ICC member jurisdictions from across the country and around the
world, following extensive and ongoing deliberations,convened to cast final ballots for the approval
of the latest published triennial group of the ICC model building codes,the 2006 INTERNA TIONAL
CODES*, for the express purpose of inclusively regulating the construction,alteration,movement,
enlargement,replacement,repair,equipment,use and occupancy,location,removal and demolition
of every type of building; and
WHEREAS,a volunteer code-review task group(represented by code officials from the City
of Fort Collins, Poudre Fire Authority, and Larimer County, the professional building and design
industries in the Larimer County region,and various other contributors as needed)has completed an
extensive review of the 2006 INTERNATIONAL BUILDING CODE®, the companion ICC mid-
triennial update in the form of the 2007 IBC SUPPLEMENT OR, in addition to the proposed local
amendments thereto; and
WHEREAS, the Affordable Housing Board, the Air Quality Advisory Board, the Building
Review Board, the Electric Board, the Health District of Northern Latimer County Board, the
Natural Resources Advisory Board, the Planning and Zoning Board, and the Commission on
Disability have made certain recommendations with respect to the adoption of the 2006
INTERNATIONAL BUILDING CODE®and proposed amendments; and
WHEREAS, the Council of the City of Fort Collins has determined that it is in the best
interest of the health, safety and welfare of the City and its citizens that the 2006 INTERNATIONAL
BUILDING CODE®, as amended be adopted.
NOW, THEREFORE, BE IT ORDAINED BY THE COUNCIL OF THE CITY OF FORT
COLLINS that Chapter 5, Article II, Division 2 of the Code of the City of Fort Collins is hereby
amended and revised in the following respects:
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Section 1. That Section 5-26 subparagraph(a)of the Code of the City of Fort Collins is
hereby repealed and reenacted to read as follows:
(a) There is hereby adopted by reference, as the building code of the City, the 2006
International Building Code(IBC)®,published by the International Code Council(ICQ0,as
if set forth in full herein. The subject matter of the codes adopted herein includes
comprehensive provisions and standards regulating the erection,construction,enlargement,
alteration, repair, moving, removal, conversion, demolition, occupancy, equipment, use,
height, area and maintenance of buildings and structures, exclusive of detached one- and
two-family dwellings and multiple single-family dwellings(townhouses)not more than three
(3)stories above grade and their associated accessory structures,for the purpose of protecting
the public health, safety and general welfare.
Section 2. That Section 5-27 Code of the City of Fort Collins is hereby repealed and
reenacted to read as follows:
See. 5-27. Amendments and deletions to code.
The 2006INTERNATIONAL BUILDING CODE®adopted herein is hereby amended
in the following respects:
(1)Section 101, is hereby amended in the following respects:
(a)Section 101.1 is amended to read as follows:
"101.1. Title.These regulations shall be known as the General Building Code of the City of
Fort Collins, hereinafter referred to as `this Code'."
(b) Section 101.4 is amended by adding the following new subsections at the end thereof reading
as follows:
"101.4.8 All references to the International Residential Code shall mean the general
residential building code currently in effect as enacted by the City.
101.4.9 All references to the International Plumbing Code shall mean the plumbing code
currently in effect in the City.
101.4.10 All references to the International Fire Code shall mean the fire code currently in
effect as enacted by the City.
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101.4.11 All references to the International Mechanical Code shall mean the mechanical
code currently in effect as enacted by the City.
101.4.12 All references to the International Fuel-gas Code shall mean the fuel-gas code
currently in effect as enacted by the City.
101.4.13 Areas prone to flooding. All references to `flood hazard' and `areas prone to
flooding' in this code and appendices adopted therewith shall be as specified in the Code of
the City, "Chapter 10, Flood Prevention and Protection."
(2)Section 103 is amended to read as follows:
"SECTION 103—CODE ADMINISTRATION
103.1 Entity charged with code administration. The executive building-code official,
appointed by the City Manager,is charged with the direct overall administration and enforcement
of this code; and, in the performance of said duties, may delegate the necessary authority to the
appropriate technical,administrative,and compliance staff under the supervision the executive
building-code official."
(3)Section 105.2 , under the heading of, Building, is amended to read as follows:
"Building:
1. Detached accessory buildings used for playhouses, lawn and garden equipment storage,
tool storage and similar uses provided such buildings do not exceed one hundred twenty
(120)square feet of floor area nor eight(8)feet in height,do not house flammable liquids
in quantities exceeding ten (10) gallons per building and are constructed entirely of
noncombustible materials when located less than three (3) feet from an adjoining
property line.
2. Fences not over 6 feet(1829 mm) high.
3. Oil derricks.
4. Retaining walls that are not over 4 feet(1219 mm)in height measured from the bottom of
the footing to the top of the wall, unless supporting a surcharge or impounding Class I, II
or IIIA liquids.
5. Water tanks supported directly on grade if the capacity does not exceed 5,000 gallons(18
925 L) and the ratio of height to diameter or width does not exceed 2:1.
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6. Platforms and decks intended for human occupancy or walking,sidewalks and driveways
not more than 30 inches (762 mm)above adjacent grade, and not over any basement or
story below and are not part of an accessible route.
7. Painting,wallpapering,tiling,carpeting,texturing,cabinetry and similar finish or cosmetic
work.
8. Temporary motion picture, television and theater stage sets and scenery.
9. Prefabricated portable swimming or wading pools, hot tubs or spas accessory to a Group
R-3 occupancy that are less than 24 inches(610 mm)deep, do not exceed 5,000 gallons
(18 925 L) and are installed entirely above ground.
10. Shade cloth structures constructed for nursery or agricultural purposes, not including
service systems.
11. Swings and other playground equipment accessory to detached one- and two-family
dwellings.
12. Window awnings supported by an exterior wall on Group R, Division 3 and Group U
Occupancies projecting not more than 54 inches (1372 mm), window replacement
requiring no structural alteration and when such work is determined not to be historically
significant, storm window, storm door and rain gutter installation.
13. Nonfixed and movable fixtures, cases, racks, counters and partitions not over 5 feet 9
inches (1753 mm) in height.
14 Exterior walks, driveways, parking lots except as required for facility accessibility by
Chapter 11.
15. Roofing repair or replacement work not exceeding one square of covering per building.
16. Minor work valued at less than five hundred dollars($500.)and not involving alteration
of bearing walls, structural or fire-rated assemblies, plumbing, electrical or mechanical
components or fire-extinguishing systems."
(4)Section 105.5 is amended to read as follows:
"105.5 Permit expiration and incompletion of authorized work. Every permit issued, both
prior to and subsequent to the effective date of this code, shall become invalid if the work
authorized by such permit has not been commenced within one hundred eighty(180)days after
issuance of the permit,or if such work,once commenced,is suspended or abandoned for a period
of one hundred eighty(180)days after the date the work was commenced. The building official
is authorized to grant, in writing, extensions of time for periods of not more than one hundred
eighty (180) days each. Each extension must be requested in writing and justifiable cause
demonstrated.No more than two such extensions may be granted by the building official unless
the additional extension(s) have first been approved by the Building Review Board.
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Both prior to and subsequent to the effective date of this code,any work authorized by a permit
regulated by this code, or under any other building construction code administered by the
building official,that involves the construction or alteration of an exterior building component,
assembly or finish material, such as the foundation, wall and roof framing, sheathing, siding,
fenestration,and roof covering,shall be fully completed for permanent outdoor exposure within
twenty-four (24) months of the date of issuance of such permit, regardless of when the permit
was issued. Failure to comply with the foregoing time period shall constitute a violation of this
code, resulting in revocation of the permit, and shall subject the permit holder and property
owner to all penalties provided by the Code of the city. No such revoked permit may be
reinstated, nor shall a new permit be issued for work previously authorized by the revoked
permit, unless such reinstatement or issuance of a new permit has first been approved by the
Building Review Board."
(5) Section 106.3 is amended by adding a new subsection thereto as follows:
"106.3.5 Time limitation of application. Applications for which a permit has not been issued
within one-hundred eighty(180)days following the date of application shall automatically expire
and plans submitted for code-compliance review may thereafter be returned to the applicant or
destroyed by the building official. The building official may extend the time for action by the
applicant for a period not exceeding ninety (90) days upon written request by the applicant
showing that circumstances beyond the control of the applicant have prevented action from being
taken. In order to renew action on an application after expiration, the applicant shall resubmit
plans and plan review fee as provided in this code."
(6)Section 108, Fees, is amended in the following respects:
(a)Section 108.1 is amended to read as follows:
"108.1 Payment of fees. No permit with any amendments and related construction plans
therefor shall be valid until the fees prescribed by the city manager pursuant to Chapter 7.5,
Articles I through VI of the Code of the city, entitled, 'ADMINISTRATIVE FEES,' have
been paid."
(b)Section 108.6 is amended to read as follows:
"108.6 Fee refunds. Any fee paid hereunder that is erroneously paid or collected shall be
refunded.The building official may authorize the refunding of ninety percent(90)percent of
a plan review fee or building permit fee to the applicant who paid such fee pursuant to this
Section,provided the plan review is withdrawn or cancelled and the plan review and/or work
authorized under a permit issued in accordance with this code has not commenced, and
provided further such plan review or permit is valid and not expired as set forth in this
Section. Prior to authorizing the refunding of any fee paid to the original applicant or
permittee, a written request from such parry must be submitted to the City within one
hundred eighty(180) days of the date of the fee payment."
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(7)Section 112, Appeals, is amended to read as follows:
"112.1 General.The Building Review Board(hereafter'Board')as established in Section 2-117
of the Code of the city of Fort Collins is hereby empowered in accordance with the procedures
set forth in this Section to hear and to decide appeals of orders, decisions, or determinations
made by the building official relative to the application and interpretation of this code and to the
suitability of alternate materials or alternate methods of construction.The building official shall
be an ex offrcio member of the Board without vote and shall serve as the Secretary of the Board.
The Board shall adopt rules of procedure for conducting its business, and shall render all
decisions and findings in writing.
112.2 Applications/hearings.When a building permit applicant or a holder of a building permit
desires relief from any decision of the building official related to the enforcement of this code,
except as is otherwise limited in Section 105.4,such building permit applicant,building permit
holder, or representative thereof may appeal the decision of the building official to the Board
stating that such decision by the building official was based on an erroneous interpretation of the
building regulations or that an alternate design,alternate materials and/or the alternate methods
of construction proposed by the appellant are equivalent to those prescribed by this code
considering structural strength, effectiveness, fire resistance, durability, safety and any other
pertinent factors.
The Board shall hear and decide all appeals made to it and shall have the authority to rule in
favor of the appellant when the Board determines that the interpretation of the building
regulations of the city by the building official was erroneous, or when the Board determines an
alternate design, alternate materials and/or the alternate methods proposed by the appellant are
equivalent to those prescribed by this code considering structural strength, effectiveness, fire
resistance, durability, safety and any other pertinent factors. The Board shall require that
sufficient evidence be submitted to substantiate any claims made regarding the proposed
alternate design,alternate materials and/or alternate methods of construction. A quorum of four
(4) members shall be necessary for any meeting of the Board."
112.3 Fees and notification.Persons desiring to appeal to the Board any decision of the building
official as provided in this Section 112 shall, at the time of filing such appeal, pay to the city a
filing fee in the amount of fifty dollars ($50.). Written notice of hearings shall be given to the
Appellant and, with respect to requests for exceptions or variances authorized pursuant to
Section 1101.1 of this code, to the secretary to the Commission on Disability, at least three (3)
days prior to the hearing by mailing the same to such party's last known address by regular U.S.
mail.
112.4 Limitations.The Building Review Board shall have no authority with respect to any of the
following functions:
1. The administration of this code;
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2. Waiving requirements of this code, except as provided for pursuant to this Section 105;
3. Modifying the applicable provisions of, or granting variances to, this code, or approving
the use of alternate designs,alternate materials and/or alternate methods of construction
except as provided for in this Section 112 and based upon a specific appeal from a
determination or decision of the building official on an individual case basis; and
4. Modifying, interpreting, or ruling on the applicability or intent of the zoning and landuse
regulations or other laws of the city except as expressly empowered otherwise."
(8) Section 113— VIOLATIONS, is amended in the following respects:
(a) Section 113.4, is amended to read as follows:
"113.4 Violation, penalties. Any person who violates a provision of this code or fails to
comply with any of the requirements thereof or who erects, installs within or on, alters or
repairs a building or structure in violation of the approved construction documents or
directive of the code official,or of a permit or certificate issued under the provisions of this
code, shall be guilty of a misdemeanor subject to the penalties and fines pursuant to Section
1-15 of the Code of the city."
(b)New, Subsection 113.5, is added at the end thereof to read as follows:
"113.5 Work commencing before permit issuance. In addition to penalties set forth in
Subsection R113.4, any person or firm who, before obtaining the necessary permit(s),
commences any construction of,or work on,a building,structure,electrical,gas,mechanical
or plumbing system that is not otherwise exempted from obtaining a permit,shall be subject
to a processing and penalty fee in addition to the standard prescribed permit fee. Such
additional fee shall be equal to the permit fee,except that such fee shall not be less than fifty
dollars ($50) nor more than one thousand dollars ($1,000) for the first such violation. A
person or firm committing the same such violation repeatedly is subject to processing and
penalty fees equal to double the amount of the permit fee or double the amount of the
preceding violation, whichever is greater, for every same such subsequent violation
committed thereafter within any 180-day period. The foregoing fees may be appealed to the
city manager pursuant to Chapter 2, Article VI of the Code of the City."
(9)Section 202, Definitions, is amended in the following respects:
(a) The definition of"BUILDING OFFICIAL" is amended to read as follows:
"BUILDING-CODE OFFICIAL. The executive building-code official designated by the
City Manager charged with the overall administration and enforcement of this code as
described in Section 103.L"
(b) The definition of"FAMILY" is added to read as follows:
"FAMILY is defined as set forth in the Land Use Code of the city."
(c)The definition of"ROOM, SLEEPING" is added to read as follows:
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"ROOM,SLEEPING(BEDROOM).A habitable room within a dwelling or other housing
unit designed primarily for the purpose of sleeping. The presence of a bed, cot, mattress,
convertible sofa or other similar furnishing used for sleeping purposes is indicia for
determining that such space or room qualifies as a sleeping room. The presence of closets
and similar storage facilities are not considered as relevant factors in determining whether or
not a room is a sleeping room."
(d) The definition of"STORY ABOVE GRADE PLANE" is added to read as follows:
"STORY ABOVE GRADE PLANE. Any story having its finished floor surface entirely
above grade plane, or in which the finished surface of the floor above is:
1. More than 6 feet(1829 min) above grade plane; or
2. More than 12 feet(3658 mm) above the finished ground level at any point."
(e) The definition of"TOWNHOUSE" is amended to read as follows:
TOWNHOUSE.A single-family dwelling unit constructed as part of a group of two or more
attached individual dwelling units, each of which is separated from the other from the
foundation to the roof and is located entirely on a separately recorded and platted parcel of
land(site)bounded by property lines,and which parcel is deeded exclusively for such single-
family dwelling.
(10)Section 303.1 is amended by the addition of exceptions numbers 4 and 5 to read as follows:
"4. Assembly areas that are accessory to Group E occupancies are not considered separate
occupancies except when applying the assembly occupancy requirements of Chapter 11.
5. Accessory religious educational rooms and religious auditoriums with occupant loads of
less than 100 are not considered separate occupancies."
(11) Section 419 is amended to read as follows:
"Section 419—RESIDENCE/WORK UNITS
419.1 General.A residence/work unit is a dwelling unit or sleeping unit in which a significant
portion of the space includes a nonresidential use that is operated by the tenant and shall
comply with Section 419.
Exception: Dwelling or sleeping units that include an office that is less than 10 percent
of the area of the dwelling unit shall not be classified as a residence/work unit.
419.1.1 Limitations. The following shall apply to all residence/work areas:
1. The residence/work unit is permitted to be a maximum of 3,000 square feet(279
m2);
2. The nonresidential area is permitted to be a maximum 50 percent of the area of
each residence/work unit;
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3. The nonresidential area function shall be limited to the first or main floor only of
the residence/work unit; and
4. A maximum of five nonresidential workers or employees are allowed to occupy
the non-residential area at any one time.
419.1.2 Occupancies. Residence/work units shall be classified as a Group R-2
occupancy. Separation requirements found in Section 508.3 shall not apply when the
residence/work unit is in compliance with Section 419. High-hazard and storage
occupancies shall not be permitted in a residence/work unit. The aggregate of storage in
the residence/work unit shall be limited to 10 percent of the space dedicated to
nonresidential activities.
419.1.3 Means of egress.Except as modified by this section,the provisions for Group R-
2 occupancies in Chapter 10 shall apply to the entire residence/work unit.
419.1.3.1 Egress capacity. The egress capacity for each element of the
residence/work unit shall be based on the occupancy load for the occupancy served in
accordance with Table 1004.1.1.
419.1.3.2 Sliding doors. Where doors in a means of egress are of the horizontal-
sliding type, the force to slide the door to its fully open position shall not exceed 50
pounds (220 N) with a perpendicular force against the door of 50 pounds(220 N).
419.1.3.3 Spiral stairs. Spiral stairs that conform to the requirements of Section
1009.8 shall be permitted.
419.1.3.4 Locks. Egress doors shall be permitted to be locked in accordance with
Exception 4 of Section 1008.1.8.3.
419.1.4 Vertical openings.Floor openings between floor levels of a residence/work unit
are permitted without enclosure.
419.1.5 Fire protection.The residence/work unit shall be provided with a monitored fire
alarm system where required by Section 907.2.9 and a fire sprinkler system in accordance
with Section 903.2.7.
419.1.6 Structural. Floor loading for the areas within a residence/work unit shall be
designed to conform to Table 1607.1 based on the function within the space.
419.1.7 Accessibility. Accessibility shall be designed in accordance with Chapter 11.
419.1.8 Ventilation.The applicable requirements of the International Mechanical Code
shall apply to each area within the residence/work unit for the function within that space.
419.2 Separation walls. Walls separating dwelling units in the same building and walls
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separating sleeping units in the same building shall be constructed as fire partitions in
accordance with Section 708.
419.3 Horizontal separation.Floor assemblies separating dwelling units in the same buildings
and floor assemblies separating sleeping units in the same building shall be constructed as
horizontal assemblies in accordance with Section 711."
(12)Section 505.2 is amended by the addition of a new exception number 3 to read as follows:
"I Within individual dwelling units of Group R occupancies,the maximum aggregate area of
a mezzanine may be equal to one-half of the area of the room in which it is located,without
being considered an additional story; and to allow the mezzanine to be closed to the room
in which it is located,provided exits from the mezzanine are in conformance with Section
505.3."
(13)Section 506.4 is amended in the following respects:
(a)Subsection 506.4.1, Mixed occupancies, is amended by renumbering as, "506.4.1.1."
(b)Section506.4 is amended to read as follows:
"506.4 Buildings with more than one story.The total allowable building area of a building
with more than one story shall be determined in accordance with this section. The actual
aggregate building area at all stories in the building shall not exceed the total allowable
building area.
Exception: A single basement need not be included in the total allowable building area,
provided such basement does not exceed the area permitted for a building with no more
than one story above grade plane.
506.4.1 Area determination.The total allowable building area of a building with more
than one story above grade plane shall be determined by multiplying the allowable area
per story (Aa), as determined in Section 506.1, by the number of stories above grade
plane as listed below:
1. For buildings with two stories above grade plane, multiply by 2;
2. For buildings with three or more stories above grade plane, multiply by 3; and
3. No story shall exceed the allowable area per story (Aa), as determined in Section
506.1, for the occupancies on that story.
Exceptions:
1. Unlimited area buildings in accordance with Section 507.
2. The maximum area of a building equipped throughout with an automatic sprinkler
system in accordance with Section 903.3.1.2 shall be determined by multiplying the
allowable area per story (A.), as determined in Section 506.1, by the number of
stories above grade plane."
(14)Section 509.5 is amended to read as follows:
10
"509.5 Group R-1 and R-2 buildings of Type IIIA construction.The height limitation for
buildings of Type IIIA construction in Groups R-I and R-2 shall be increased to six stories and
75 feet(22 860 mm)where the first-floor construction above the basement has a fire-resistance
rating of not less than 3 hours and the floor area is subdivided by 2-hour fire-resistance-rated
fire walls into areas of not more than 3,000 square feet(279 M2y,
(15)Section 509.6 is amended to read as follows:
"509.6 Group R-1 and R-2 buildings of Type IIA construction. The height limitation for
buildings of Type IIA construction in Groups R-1 and R-2 shall be increased to nine stories and
100 feet (30 480 mm) where the building is separated by not less than 50 feet (15 240 mm)
from any other building on the lot and from lot lines, the exits are segregated in an area
enclosed by a 2-hour fire-resistance-rated fire wall and the first-floor construction has a fire-
resistance rating of not less than 1% hours."
(16)Section 702 is amended by deleting the definition, "FIRE AREA".
(17)Section 704.3 is amended by adding a third paragraph to read as follows:
"Lines or walls which are established solely to delineate individual portions of a building or of
a planned unit development(PUD)need not be considered as property lines for the purposes of
this code,provided that such building is entirely located on property which is under common
ownership and further provided that required distances, set forth in Section 503.3 for assumed
property lines between buildings located on the same property, are maintained."
11
(18) Table 704.8 is amended to read :
TABLE 704.8
MAXIMUM AREA OF EXTERIOR WALL OPENINGS BASED ON FIRE
SEPARATION DISTANCE AND DEGREE OF OPENING PROTECTION
FIRE SEPARATION DISTANCE ft DEGREE OF OPENING PROTECTION ALLOWABLE AREAa
Unprotected, Nons rinklered UP, NS Not Permitted
0 to less than 3 b,C -Unprotected, s rinklered UP, S i Not Permitted
Protected P Not Permitted
Unprotected, Nons rinklered UP, NS Not Permitted
3 to less than 5d,a -Unprotected, s rinklered UP, S i 15%
Protected P 15%
Unprotected, Nons rinklered UP, NS 10%h
5 to less than 109,f -Unprotected, s rinklered UP, S i 25%
Protected P 25%
Unprotected, Nons rinklered UP, NS 15%h
10 to less than 15a,f,9 -Unprotected, s rinklered UP, S i 45%
Protected P 45%
Unprotected, Nons rinklered UP, NS 25%
15 to less than 20f,rf -Unprotected, s rinklered UP, S i 75%
Protected P 75%
Unprotected, Nons rinklered UP, NS 45%
20 to less than 25f,a -Unprotected, s rinklered UP, S i No Limit
Protected P No Limit
Unprotected, Nons rinklered UP, NS 70%
25 to less than 30f,g Unprotected, s rinklered UP, S i No Limit
Protected P No Limit
Unprotected, Nons rinklered UP, NS No Limit
30 or greater Unprotected, s rinklered UP, S i Not Required
Protected P Not Re uired
For SI: 1 foot=304.8 mm.
UP, NS=Unprotected openings in buildings not equipped throughout with an automatic sprinkler system in
accordance with Section 903.3.1.1.
UP, S =Unprotected openings in buildings equipped throughout with an automatic sprinkler system in accordance
12
with Section 903.3.1.1.
P=Openings protected with an opening protective assembly in accordance with Section 704.8.2.
a. Values indicated are the percentage of the area of the exterior wall, per story.
b. For the requirements for fire walls of buildings with differing heights, see Section 705.6.1.
c. For openings in a fire wall for buildings on the same lot, see Section 705.8.
d. The maximum percentage of unprotected and protected openings shall be 25 percent for Group R
occupancies.
e. Unprotected openings shall not be permitted for openings with a fire separation distance of less than 15
feet for Group H-2 and H-3 occupancies.
f. The area of unprotected and protected openings shall not be limited for Group R-3 occupancies, with a
fire separation distance of 5 feet or greater.
g. The area of openings in an open parking structure with a fire separation distance of 10 feet or greater
shall not be limited.
h. Includes buildings accessory to Group R-3.
i. Not applicable to Group H-1, H-2 and H-3 occupancies.
(19)Section 714 is amended in the following respects:
(a)Section 714.1 is amended by adding two new subsections to read as follows:
"714.1.1 Primary structural frame. The primary structural frame shall be the columns
and other structural members including the girders, beams, trusses and spandrels having
direct connections to the columns and bracing members designed to carry gravity loads.
714.1.2 Secondary members. The members of floor or roof construction that are not
connected to the columns shall be considered secondary members and not part of the
primary structural frame."
(b) A new, Subsection 714.8, is added to read as follows:
"714.8 Sprayed fire-resistant materials (SFRM). Sprayed fire-resistant materials
(SFRM) shall comply with Sections 714.8.1 through 714.8.4.
714.8.1 Fire-resistance rating. The application of SFRM shall be consistent with the fire
resistance rating and the listing, including,but not limited to,minimum thickness and dry
density of the applied SFRM,method of application,substrate surface conditions; and the
use of bonding adhesives, sealants, reinforcing or other materials.
714.8.2 Manufacturer's installation instructions. The application of SFRM shall be in
accordance with the manufacturer's installation instructions.The instructions shall include,
but are not limited to, substrate temperatures and surface conditions and SFRM handling,
storage, mixing, conveyance, method of application, curing and ventilation.
714.8.3 Substrate condition.The SFRM shall be applied to a substrate in compliance with
Sections 714.8.3.1 through 714.8.3.2.
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714.8.3.1 Surface conditions. Substrates to receive SFRM shall be free of dirt, oil,
grease, release agents, loose scale and any other condition that prevents adhesion.
The substrates shall also be free of primers,paints and encapsulants other than those
fire tested and listed by a nationally recognized testing agency. Primed, painted or
encapsulated steel shall be allowed, provided that testing has demonstrated that
required adhesion is maintained.
714.8.3.2 Primers,paints and encapsulants. Where the SFRM is to be applied over
primers, paints or encapsulants other than those specified in the listing,the material
shall be field tested in accordance with ASTM E 736. Where testing of the SFRM
with primers, paints or encapsulants demonstrates that required adhesion is
maintained, SFRM shall be permitted to be applied to primed, painted or
encapsulated wide flange steel shapes in accordance with the following conditions:
1. The beam flange width does not exceed 12 inches (305 mm); or
2. The column flange width does not exceed 16 inches (400 mm); or
3. The beam or column web depth does not exceed 16 inches (400 mm).
4. The average and minimum bond strength values shall be determined based on a
minimum of five bond tests conducted in accordance with ASTM E 736. Bond tests
conducted in accordance with ASTM E 736 shall indicate a minimum average bond
strength of 80 percent and a minimum individual bond strength of 50 percent,when
compared to the bond strength of the SFRM as applied to clean uncoated 1/8-inch-
thick (3-mm) steel plate.
714.8.4 Temperature. A minimum ambient and substrate temperature of 40OF (4.44°C)
shall be maintained during and for a minimum of 24 hours after the application of the
SFRM, unless the manufacturer's installation instructions allow otherwise.
714.8.5 Finished condition. The finished condition of SFRM applied to structural
members or assemblies shall not, upon complete drying or curing, exhibit cracks, voids,
spalls,delamination or any exposure of the substrate. Surface irregularities of SFRM shall
be deemed acceptable."
14
(20) Table 715.5 is amended to read as follows:
TABLE 715.5
FIRE WINDOW ASSEMBLY FIRE PROTECTION RATINGS
TYPE OF ASSEMBLY REQUIRED ASSEMBLY MINIMUM FIRE WINDOW
RATING(hours) ASSEMBLY RATING(hours)
Interior Fire walls All NP
walls:
Fire barriers
> 1 NPa
1 3/4
Smoke barriers 1 3/4
Fire partitions 1 3/4
1/2 1/3
Exterior walls
> 1 1 1/2
1 3/4
Party wall All NP
NP = Not Permitted.
a. Not permitted except as specified in Section 715.2.
(21)Section 716.5 is amended in the following respects:
(a)Section 716.5.1 is amended by adding a new Subsection 716.5.1.1, to read as follows:
"716.5.1.1 Horizontal Exits. A listed smoke damper designed to resist the passage of
smoke shall be provided at each point a duct or air transfer opening penetrates a fire
wall that serves as a horizontal exit."
(b)Section 716.5.3, Shaft enclosures, is amended by adding a new exception number 5 to read
as follows:
(c) "5. Fire dampers and combination fire/smoke dampers are not required in kitchen and
clothes dryer exhaust system when installed in accordance with the International
Mechanical Code."
(d)Two new subsections are added in numerical sequence to read as follows:
"716.5.6 Exterior walls. Ducts and air transfer openings in fire-resistance rated exterior
walls required to have protected openings in accordance with Section 704.14 shall be
protected with listed fire dampers installed in accordance with their listing.
716.5.7 Smoke partitions.A listed smoke damper designed to resist the passage of smoke
15
shall be provided at each point that an air transfer opening penetrates a smoke partition.
Smoke dampers and smoke damper actuation methods shall comply with Section
716.3.2.1.
Exception: Where the installation of a smoke damper will interfere with the
operation of a required smoke control system in accordance with Section 909,
approved alternate protection shall be utilized."
(22)Section 717.2.1 is amended to read as follows:
"717.2.1 Fireblocking materials. Fireblocking shall consist of the following materials:
1. Two-inch(51 mm) nominal lumber.
2. Two thicknesses of 1-inch(25 mm) nominal lumber with broken lap joints.
3. One thickness of 0.719-inch (18.3 mm) wood structural panels with joints backed by
0.719- inch(18.3 mm) wood structural panels.
4. One thickness of 0.75-inch (19.1 mm) particleboard with joints backed by 0.75-inch (19
mm) particleboard.
5. One half-inch (12.7 mm) Gypsum board.
6. One fourth-inch(6.4 mm) Cement-based millboard.
7. Batts or blankets of mineral wool, mineral fiber or other approved materials installed in
such a manner as to be securely retained in place.
717.2.1.1 Batts or blankets of mineral wool or mineral fiber. Batts or blankets of
mineral wool or mineral fiber or other approved nonrigid materials shall be permitted for
compliance with the 10-foot (3048 nun) horizontal fireblocking in walls constructed
using parallel rows of studs or staggered studs.
717.2.1.2 Unfaced fiberglass. Unfaced fiberglass batt insulation used as fireblocking
shall fill the entire cross section of the wall cavity to a minimum height of 16 inches(406
mm)measured vertically. When piping,conduit or similar obstructions are encountered,
the insulation shall be packed tightly around the obstruction.
717.2.1.3 Loose-fill insulation material.Loose-fill insulation material,insulating foam
sealants and caulk materials shall not be used as a fireblock unless specifically tested in
the form and manner intended for use to demonstrate its ability to remain in place and to
retard the spread of fire and hot gases.
717.2.1.4 Fireblocking integrity. The integrity of fireblocks shall be maintained.
717.2.1.5 Double stud walls. Batts or blankets of mineral or glass fiber or other
approved nonrigid materials shall be allowed as fireblocking in walls constructed using
parallel rows of studs or staggered studs.
16
(23) Section 902.1 is amended by adding two new definitions in alphabetical order to read as
follows:
"FIRE AREA. The aggregate floor area enclosed and bounded by fire walls, fire barriers,
exterior walls or fire-resistance-rated horizontal assemblies of a building. Areas of the
building not provided with surrounding walls shall be included in the fire area if such areas
are included within the horizontal projection of the roof or floor above."
FIRE CONTAINMENT AREA is a portion of a story or basement which is totally enclosed by
a smoke and draft barrier of not less than 1-hour fire-resistive construction and as prescribed
herein. All door openings penetrating such fire-containment areas shall be protected by tight-
fitting smoke and draft control assemblies as specified in Section 715.4.3 except that such doors
shall be automatic closing by actuation of a smoke detector in accordance with Section 715.4.7.3.
All duct penetrations shall be protected by dampers complying with Section 716.5.4.1 with a
minimum leakage classification of III, except that such dampers shall be automatic closing by
actuation of a smoke detector. Openings other than doors and ducts shall be protected as
specified in Section 715.5 and shall be limited to a maximum of twenty-five(25)percent of any
one (1) wall. Self-closing devices may be used in lieu of automatic closing devices on doors
unlikely to be fixed open during normal conditions. Examples are doors at toilet room,vertical
stairways, closets and small storage rooms and similar areas."
(24)Section 903 is amended in the following respects:
(a) A new Table 903.1, is added as follows:
Table 903.1, Maximum Allowable Fire-Containment Area, is added to read as follows:
"TABLE 903.1
MAXIMUM ALLOWABLE FIRE-CONTAINMENT AREA
(IN SQUARE FEET)
Types of Construction
Occupancy I A I I B [ II A I II B III A rl7 B IV-HT VA VB
Al 10,000 10,000 NP NP NP NP F NP j NP NP
A2, l0,000 F10,000 5,000 NP 5,000 P 5,000 5,000 NP
I , � r � , r000 000000000 ,00050005,000A3 4 1000r116000
F1, M S1, 00 [ 0 (U 001 � 00 7,01 , 17,000 7,000000 F2, S2 2Q000 I20,000 r10,000 �000 1IQ000 r7,000 10,000 1Q000' 5,000
10,000 I1Q000 F7,000 5A 7,000�5,000 17,-000 7,000 5,000
NP =Not Permitted"
(b)Section 903.2 is amended by adding an exception number 2 to read as follows:
17
"2. Except for Occupancies with a Group R fire area in accordance with Section 903.2.7,
an automatic sprinkler system shall be installed in all buildings which are not divided
into fire containment areas as specified in Table 903.1."
(25) Section 907.2.10.1.1 is amended by adding a new item, 4, to read as follows:
"4. Additions, alterations or repairs to Group R Occupancies. When one (1) or more
sleeping rooms are added or created in existing Group R Occupancies,the entire dwelling
unit shall be provided with smoke detectors located and installed as required for new
Group R Occupancies described herein."
(26)Section 912.3 is amended by adding two new subsections in numerical order to read as
follows:
"912.3.2 Clear space around connections. A working space of not less than 36 inches(762
mm) in width, 36 inches (914 mm) in depth and 78 inches (1981 mm) in height shall be
provided and maintained in front of and to the sides of wall-mounted fire department
connections and around the circumference of free-standing fire department connections,except
as otherwise required or approved by the fire chief.
912.3.3 Physical protection. Where fire department connections are subject to impact by a
motor vehicle, vehicle impact protection shall be provided in accordance with Section 312 of
the International Fire Code."
(27 Chapter 9, FIRE PROTECTION SYSTEMS,is amended by adding new Sections,913 and 914,at
the end of the chapter to read in numerical sequence as follows:
"SECTION 913 FIRE PUMPS
913.1 General. Where provided, fire pumps shall be installed in accordance with this section
and NFPA 20.
913.2 Protection against interruption of service. The fire pump, driver and controller shall
be protected in accordance with NFPA 20 against possible interruption of service through
damage caused by explosion, fire, flood, earthquake, rodents, insects, windstorm, freezing,
vandalism and other adverse conditions.
913.3 Temperature of pump room. Suitable means shall be provided for maintaining the
temperature of a pump room or pump house, where required, above 40°F (5°C).
913.3.1 Engine manufacturer's recommendation. Temperature of the pump room,
pump house or area where engines are installed shall never be less than the minimum
recommended by the engine manufacturer.The engine manufacturer's recommendations
for oil heaters shall be followed.
18
913.4 Valve supervision. Where provided,the fire pump suction,discharge and bypass valves,
and the isolation valves on the backflow prevention device or assembly shall be supervised
open by one of the following methods.
1. Central-station, proprietary or remote-station signaling service.
2. Local signaling service that will cause the sounding of an audible signal at a constantly
attended location.
3. Locking valves open.
4. Sealing of valves and approved weekly recorded inspection where valves are located within
fenced enclosures under the control of the owner.
913.4.1 Test outlet valve supervision. Fire pump test outlet valves shall be supervised
in the closed position.
913.5 Acceptance test.Acceptance testing shall be done in accordance with the requirements
of NFPA 20.
SECTION 914 EMERGENCY RESPONDER SAFETY FEATURES
914.1 Shaftway markings. Vertical shafts shall be identified as required by this section.
914.1.1 Exterior access to shaftways. Outside openings accessible to the fire
department and that open directly on a hoistway or shaftway communicating between two
or more floors in a building shall be plainly marked with the word SHAFTWAY in red
letters at least 6 inches(152 nun)high on a white background. Such warning signs shall
be placed so as to be readily discernible from the outside of the building.
914.1.2 Interior access to shaftways. Door or window openings to a hoistway or
shaftway from the interior of the building shall be plainly marked with the word
"SHAFTWAY" in red letters at least 6 inches (152 mm) high on a white background.
Such warning signs shall be placed so as to be readily discernible.
Exception: Markings shall not be required on shaftway openings that are readily
discernible as openings onto a shaftway by the construction or arrangement.
914.2 Equipment room identification. Fire protection equipment shall be identified in an
approved manner. Rooms containing controls for air-conditioning systems,sprinkler risers and
valves or other fire detection, suppression or control elements shall be identified for the use of
the fire department. Approved signs required to identify fire protection equipment and
equipment location shall be constructed of durable materials,permanently installed and readily
visible.
(28)Section 1002.1 is amended by adding a new definition, FLIGHT, to read as follows:
19
"FLIGHT.A continuous run of rectangular treads,winders or combination thereof from one
landing to another consisting of more than one riser."
(29)Section 1007.3 is amended to read as follows:
"1007.3 Exit stairways. In order to be considered part of an accessible means of egress, an
exit stairway shall have a clear width of 48 inches(1219 nun)minimum between handrails and
shall either incorporate an area of refuge within an enlarged floor-level landing or shall be
accessed from either an area of refuge complying with Section 1007.6 or a horizontal exit.
Exceptions:
1. The area of refuge is not required at unenclosed interior exit stairways as permitted
by Section 1020.1 in buildings or facilities not more than 4 stories above grade
plane,that are equipped throughout with an automatic sprinkler system installed in
accordance with Section 903.3.1.1 or 903.3.1.2.
2. The clear width of 48 inches (1219 mm) between handrails is not required at exit
stairways in buildings or facilities not more than 4 stories above grade plane,
equipped throughout with an automatic sprinkler system installed in accordance
with Section 903.3.1.1 or 903.3.1.2.
3. Areas of refuge are not required at exit stairways in buildings or facilities not more
than 4 stories above grade plane, equipped throughout by an automatic sprinkler
system installed in accordance with Section 903.3.1.1 or 903.3.1.2.
4. The clear width of 48 inches (1219 mm) between handrails is not required for exit
stairways accessed from a horizontal exit.
5. Areas of refuge are not required at exit stairways serving open parking garages.
6. Areas of refuge are not required for smoke protected seating areas complying with
Section 1025.6.2.
7. The areas of refuge are not required in Group R-2 occupancies."
(30)Section 1007.4 is amended in its entirety to read as follows:
1007.4 Elevators. In order to be considered part of an accessible means of egress,an elevator
shall comply with the emergency operation and signaling device requirements of Section 2.27
of ASME A 17.1. Standby power shall be provided in accordance with Sections 2702 and 3003.
The elevator shall be accessed from either an area of refuge complying with Section 1007.6 or
a horizontal exit.
Exceptions:
1. Elevators are not required to be accessed from an area of refuge or horizontal exit in
open parking garages.
2. Elevators are not required to be accessed from an area of refuge or horizontal exit in
buildings and facilities equipped throughout by an automatic sprinkler system installed in
accordance with Section 903.3.1.1 or 903.3.1.2.
3. Elevators not required to be located in a shaft in accordance with Section 707.2 are not
required to be accessed from an area of refuge or horizontal exit.
20
4. Elevators are not required to be accessed from an area of refuge or horizontal exit for
smoke protected seating areas complying with Section 1025.6.2.
5. Elevators in buildings or facilities not more than 4 stories above grade plane are not
required to be accessible when equipped throughout by an automatic sprinkler system
installed in accordance with Section 903.3.1.1 or 903.3.1.2.
(31) Section 1008.1 is amended by adding a third paragraph thereto to read as follows:
"Other doors which are neither required nor used for exit purposes need not conform to this
Chapter,provided such doors cannot be readily construed as exits by building occupants.Such
doors shall be rendered inoperable,provided such doors do not have grasping hardware,closers
or exit signs installed thereon and are made to appear inconspicuous or resemble the adjacent
wall construction or are provided with an obvious barricade."
(32) Section 1008.1.4 is amended in the following respects:
a) A new, Exception 6, is added thereto to read as follows:
"6. Exterior doors, other than the main entrance door to a dwelling unit, may open at one
intervening exterior step that is equally spaced between the interior floor level above
and exterior landing below,provided the step has a minimum tread depth of twelve
(12) inches,a maximum riser height of seven'/a inches(7.75'), and a minimum width
equal to the door width; and provided the door does not swing over the step."
b) A second paragraph is added at the end thereto to read as follows:
"All exterior steps, slabs, walks, decks and patios serving as exterior door landings or
exterior stairs shall be adequately and permanently secured in place by approved methods
to prevent such landings or stairs from being undermined or subject to significant
displacement due to improper placement of supporting backfill or due to inadequate
anchoring methods."
(33) Section 1008.1.8 is amended by adding a new subsection at the end thereof in numerical
sequence to read as follows:
"1008.1.8.8 Electromagnetically locked egress doors. Doors in the means of egress that are
not otherwise required to have panic hardware in buildings with an occupancy in Group A,B,
E, M, R-1 or R-2 and doors to tenant spaces in Group A, B, E, M, R-1 or R-2 shall be
permitted to be electromagnetically locked if equipped with listed hardware that incorporates a
built-in switch and meet the following requirements:
1. The listed hardware that is affixed to the door leaf has an obvious method of operation
that is readily operated under all lighting conditions.
2. The listed hardware is capable of being operated with one hand.
3. Operation of the listed hardware releases to the electromagnetic lock and unlocks the
door immediately.
21
4. Loss of power to the listed hardware automatically unlocks the door."
(34)Section 1009.10 is amended by replacing in its entirety to read as follows:
"1009.10 Handrails. Stairways of more than one riser shall have handrails on each side and
shall comply with Section 1012. Where glass is used to provide the handrail,the handrail shall
also comply with Section 2407. Verify UBC for when handrails required
Exceptions:
1. Handrails for aisle stairs are not required where permitted by Section 1025.13.
2. Stairways within dwelling units,spiral stairways and aisle stairs serving seating only
on one side are permitted to have a handrail on one side only.
3.Decks,patios and walkways that have a single change in elevation where the landing
depth on each side of the change of elevation is greater than what is required for a
landing do not require handrails.
4. In Group R-3 occupancies, a change in elevation consisting of a single riser at an
entrance or egress door does not require handrails.
5. Changes in room elevations of three or fewer risers within dwelling units and
sleeping units in Group R-2 and R-3 do not require handrails."
(35)Section 1012.3 is amended by replacing in its entirety to read as follows:
1012.3 Handrail graspability. All required handrails shall meet Type I criteria as follows or
shall provide equivalent graspability.
Type I. Handrails with a circular cross-section shall have an outside diameter of at least 1.25
inches (32 mm) and not greater than 2 inches (51 mm). If the handrail is not circular, it shall
have a perimeter dimension of at least 4 inches(102 mm)and not greater than 6.25 inches(160
mm) with a maximum cross-section dimension of 2.25 inches(57 mm). Edges shall have a
minimum radius of 0.01 inch (0.25 mm).
Exception: In Group R-3 occupancies; within dwelling units in Group R-2 occupancies;
and in Group U occupancies that are accessory to a Group R-3 occupancy or accessory to
individual dwelling units in Group R-2occupancies; handrails shall be Type 1, Type II as
follows or shall provide equivalent graspability.
Type II. Handrails with a perimeter greater than 6.25 inches (160 mm) shall provide a
graspable finger recess area on both sides of the profile. The finger recess shall begin within a
distance of 0.75 inch(19 mm) measured vertically from the tallest portion of the profile and
achieve a depth of at least .3125 inch (8 mm) within 0.875 inch (22 mm) below the widest
portion of the profile. This required depth shall continue for at least 0.375 inch(1 Omm) to a
level that is not less than 1.75 inches (45 mm) below the tallest portion of the profile. The
minimum width of the handrail above the recess shall be 1.25 inches(32 mm)to a maximum
of 2.75 inches (70 mm). Edges shall have a minimum radius of 0.01 inch (0.25 mm).
22
(36)Section 1013 is amended by adding a new subsection at the end thereof in numerical sequence
to read as follows:
"1013.7"All area wells,stair wells and light wells attached to any building that are located less
than thirty-six(36)inches from the nearest intended walking surface and deeper than thirty-six
(36) inches below the surrounding ground level, creating an opening with a horizontal
dimension greater than twenty-four(24)inches measured perpendicular from the building,with
the side walls of such well having a slope steeper than 2 horizontal to 1 vertical, shall be
protected with guardrails conforming to this Section around the entire opening,or be provided
with an equivalent barrier.
EXCEPTIONS:
1. The access side of stairways need not be barricaded.
2.Area wells provided for emergency escape and rescue windows may be protected with
approved grates or covers that comply with Section 1026.4 of this code.
3.Covers and grates may be used over stairways and other openings used exclusively for
service access or for admitting light or ventilation."
(37)Subsection 1014.2. is amended in the following respects:
(a) Subsection 1014.2.2 is amended to read as follows:
"1014.2.2 Group I-2. Habitable rooms or suites in Group 1-2 occupancies shall have an
exit access door leading directly to a corridor.
Exception: Rooms with exit doors opening directly to the outside at ground level."
(b)New Subsections 1014.2.3 and 1014.2.4 are added at the end thereof to read as follows:
"1014.2.3 Suites in patient sleeping areas. Patient sleeping areas in Group 1-2
Occupancies shall be permitted to be divided into suites with one intervening room if one
of the following conditions is met:
1. The intervening room within the suite is not used as an exit access for more than
eight patient beds.
2. The arrangement of the suite allows for direct and constant visual supervision by
nursing personnel.
1014.2.3.1 Area. Suites of sleeping rooms shall not exceed 5,000 square feet(465 m2).
1014.2.3.2 Exit access. Any patient sleeping room, or any suite that includes patient
sleeping rooms, of more than 1,000 square feet (93 mZ) shall have at least two exit
access doors remotely located from each other.
23
1014.2.3.3 Travel distance. The travel distance between any point in a suite of
sleeping rooms and an exit access door of that suite shall not exceed 100 feet(30 480
mm).
1014.2.4 Suites in areas other than patient sleeping areas. Areas other than patient
sleeping areas in Group I-2 occupancies shall be permitted to be divided into suites.
1014.2.4.1 Area. Suites of rooms,other than patient sleeping rooms,shall not exceed
10,000 square feet(929 m2).
1014.2.4.2 Exit access.Any room or suite of rooms,other than patient sleeping rooms,
of more than 2,500 square feet (232 m2) shall have at least two exit access doors
remotely located from each other.
1014.2.4.3 One intervening room.For rooms other than patient sleeping rooms,suites
of rooms are permitted to have one intervening room if the travel distance within the
suite to the exit access door is not greater than 100 feet(30480 mm).
1014.2.4.4 Two intervening rooms. For rooms other than patient sleeping rooms
located within a suite, exit access travel from within the suite shall be permitted
through two intervening rooms where the travel distance to the exit access door is not
greater than 50 feet (15 240 mm).
1014.2.5 Travel distance. The travel distance between any point in a Group I-2
occupancy patient sleeping room and an exit access door in that room shall not exceed
50 feet(15 240 mm).
1014.2.6 Separation. Suites in Group 1-2 occupancies shall be separated from other
portions of the building by a smoke partition complying with Section 710."
(38)Section 1020.1.6 is amended by adding a new subsection to read as follows:
"1020.1.6.1 Signage requirements. Stairway identification signs shall comply with all of the
following requirements:
1. The signs shall be a minimum size of 18 inches (457 mm)by 12 inches (305 mm).
2. The letters designating the identification of the stair enclosure shall be a minimum of 1
'/2 inches (38 mm) in height.
3. The number designating the floor level shall be a minimum of 5 inches (127 mm) in
height and located in the center of the sign.
4. All other lettering and numbers shall be a minimum of 1 inch(22 mm) in height.
5.Characters and their background shall have a non-glare finish.Characters shall contrast
with their background, with either light characters on a dark background or dark
characters on a light background."
24
(39)Section 1026.1 Exceptions, is amended to read as follows:
I. The emergency escape and rescue opening is permitted to open onto a balcony within an
atrium in accordance with the requirements of Section 404,provided the balcony provides
access to an exit and the dwelling unit or sleeping unit has a means of egress that is not
open to the atrium.
2. Basements with a ceiling height of less than 72 inches(1829 mm)shall not be required to
have emergency escape and rescue windows.
3. High-rise buildings in accordance with Section 403.
4. Emergency escape and rescue openings are not required from basements or sleeping rooms
that have an exit door or exit access door that opens directly into a public way or to a yard,
court or exterior exit balcony that opens to a public way.
5. Basements without habitable spaces and having no more than 200 square feet (18.6mz) in
floor area shall not be required to have emergency escape windows."
(40) CHAPTER 10 is amended by adding a new section at the end thereof to read as follows:
"SECTION 1027— EXIT PATH MARKINGS (High Rise)
1027.1 General. Approved luminous markings delineating the exit path shall be provided in
exit enclosures,including vertical exit enclosures and exit passageways,of buildings of Group
A, B, E, I, M, and R-1 having occupied floors located more than 75 feet(22 860 mm) above
the lowest level of fire department vehicle access and shall comply with Sections 1027.1.1
through 1027.1.7.
Exception: Exit path markings shall not be required in lobbies or areas of open parking
garages, where such lobby or area is located on the level of exit discharge and complies with
the exception to Section 1023.1.
1027.1.1 Steps. A stripe shall be applied to the horizontal leading edge of each step and
shall extend for the full length of the step. Outlining stripes shall have a minimum
horizontal width of 1 inch (25 mm) and a maximum width of 2 inches (51 mm). The
leading edge of the stripe shall be placed at a maximum of %2 inch (13 mm) from the
leading edge of the step and the stripe shall not overlap the leading edge of the step by not
more than '/I inch(13 mm)down the vertical face of the step.
1027.1.2 Landings: The leading edge of landings shall be marked with a stripe consistent
with the dimensional requirements for steps.
1027.1.3 Handrails: All handrails and handrail extensions shall be marked with a stripe
having a minimum width of 1 inch(25 mm). The stripe shall be placed on the top surface
of the handrail for the entire length of the handrail, including extensions and newel post
25
caps.Where handrails or handrail extensions bend or turn corners,the stripe shall not have
a gap of more than 4 inches (102 mm).
1027.1.4 Perimeter demarcation lines: Stair landings and other floor areas within exit
enclosures, with the exception of the sides of steps, shall be provided with demarcation
lines on the floor or on the walls or a combination of both. The stripes shall be 1 (25 mm)
to 2 inches (51 mm) wide with interruptions not exceeding 4 inches (102 mm).
1027.1.4.1 Floor mounted demarcation lines: Perimeter demarcation lines shall be
placed within 4 inches of the wall and shall extend to within 2 inches(51 mm)of the
markings on the leading edge of landings. The demarcation lines shall continue
across the floor in front of all doors.
Exception: Demarcation lines shall not extend in front of exit doors that lead out of
an exit enclosure and through which occupants must travel to complete the exit path.
1027.1.4.2 Wall mounted demarcation lines: Perimeter demarcation lines shall be
placed on the wall with the bottom edge of the stripe no more than 4 inches (102
mm) above the finished floor. At the top or bottom of the stairs, demarcation lines
shall drop vertically to the floor within 2 inches(51 mm)of the step or landing edge.
Demarcation lines on walls shall transition vertically to the floor and then extend
across the floor where a line on the floor is the only practical method of outlining the
path. Where the wall line is broken by a door, demarcation lines on walls shall
continue across the face of the door or transition to the floor and extend across the
floor in front of such doors.
Exception: Demarcation lines shall not extend in front of exit doors that lead out of
an exit enclosure and through which occupants must travel to complete the exit path.
1027.1.4.3 Transition.Where a wall mounted demarcation line transitions to a floor
mounted demarcation line, or vice-versa, the wall mounted demarcation line shall
drop vertically to the floor to meet a complimentary extension of the floor mounted
demarcation line, thus forming a continuous marking.
1027.1.5 Uniformity.Placement and dimensions of markings shall be consistent and uniform
throughout the same exit enclosure.
1027.1.6 Materials. Luminescent exit path markings shall be permitted to be made of any
material, including paint, provided that an electrical charge is not required to maintain the
required luminance. Such materials shall include, but not limited to, self-luminous materials
and photoluminescent materials. Materials shall comply with either:
1. UL 1994, or
2. ASTM E 2072, except that the charging source shall be 1 fc (10 lux) of fluorescent
illumination for 60 minutes, and the minimum luminance shall be 5 milicandelas per square
meter after 90 minutes.
26
1027.1.7 Illumination. Exit enclosures where photoluminescent exit path markings are
installed shall be provided with the minimum means of egress illumination required by
Section 1006 for at least 60 minutes prior to periods when the building is occupied.
(41) Section 1103.1 is amended by adding second and third paragraphs respectively thereto to
read as follows:
"Nothing in this code shall be construed as relieving or waiving compliance with Colorado law
as set forth in Section 9-5-101 et seq., C.R.S.
When the Building Review Board considers granting exceptions or variances either to this
chapter pursuant to Section 112 of this code or to Colorado Statutes pursuant to Section 9-5-
102, C.R.S., it shall require the applicant requesting the exception or variance to demonstrate
that the application of a particular standard or specification relating to access for persons with
disabilities would impose an extraordinary hardship on the subject property. For the purposes
of this Section,an extraordinary hardship shall mean a substantial and unusual hardship which
is the direct result of unique physical site conditions such as terrain,topography or geology;or,
which is the direct result of other unique or special conditions encountered on the subject
property, but which are not typically encountered elsewhere in the city. Constraints,
complications or difficulties that may arise by complying with this chapter and/or with the
statutory standards for accessibility but that do not constitute an extraordinary hardship shall
not serve to justify the granting of an exception or variance."
(42)Section 1107.2 is amended by adding second and third paragraphs respectively thereto to
read as follows:
"When any building or buildings, classified as Group R, Division 1 or Group R, Division 2
Occupancy, are constructed as a single building project(or any phase thereof)on any one site
and such building project(or phase)contains one or more accessible dwelling units as required
by this chapter or Colorado law,said building project(or phase)shall be constructed such that
all such required accessible dwelling units in such building project(or phase)provide the same
functional features as are provided in the nonaccessible units in such building project (or
phase). Furthermore,such functional features except for dwelling unit bedroom-types shall be
provided in the same proportion as in the nonaccessible units. Not less than 50% of the
required accessible dwelling units shall be constructed with the distribution of accessible
dwelling unit bedroom-types being proportionally the same as the distribution of nonaccessible
dwelling unit bedroom-types, provided that at least one of each dwelling unit bedroom-type
constructed in the building project(or phase) shall be an accessible dwelling unit.
For purposes of this Section, the following definitions shall apply: 'Dwelling unit bedroom-
type' shall mean the number of bedrooms within the dwelling unit. 'Functional feature' shall
mean: a closet, a garage, a carport, a patio, a deck, additional rooms (such as a bedroom,
bathroom, den, storeroom, laundry or similar room)and any other significant feature built at
the time of original construction that offers occupants improved convenience or comfort.
Aesthetic or decorative features such as colors, architectural design elements, trim and finish
27
materials, decorative heating appliances not providing the primary comfort heat source,
lighting fixture style,cabinet and hardware style,plumbing fixture style,the type and location
of windows and glazed lights,or any similar miscellaneous features shall not be construed as
functional features."
(43)Section 1108.4.1 is amended to read as follows:
"1108.4.1 Courtrooms. Each courtroom shall be accessible and comply with Sections
1108.4.1.1 through 1108.4.1.5.
1108.4.1.1 Jury box. A wheelchair space complying with ICC Al 17.1 shall be provided
within the jury box.
Exception: Adjacent companion seating is not required.
1108.4.1.2 Gallery seating. Wheelchair spaces complying with ICC Al17.1 shall be
provided in accordance with Table 1108.2.2.1. Designated aisle seats shall be provided in
accordance with Section 1108.2.4.
1108.4.1.3 Assistive listening systems. An assistive listening system must be provided.
Receivers shall be provided for the assistive listening system in accordance with Section
1108.2.6.1.
1108.4.1.4 Employee work stations.The judge's bench,clerk's station,bailiff's station,
deputy clerk's station and court reporter's station shall be located on an accessible route.
The vertical access to elevated employee work stations within a courtroom is not required
at the time of initial construction, provided a ramp, lift or elevator complying with ICC
A 117.1 can be installed without requiring reconfiguration or extension of the courtroom or
extension of the electrical system.
1108.4.1.5 Other work stations.The litigant's and counsel stations,including the lectern,
shall be accessible in accordance with [CC Al 17.1."
(44)Section 1203.3 is amended to read as follows:
"1203.3 Ventilation and moisture control.The under-floor space between the bottom of the
structural floor sheathing and the earth under any portion of a building with living or
conditioned space above shall be provided with ventilation using the methods and materials as
prescribed hereunder.
1203.3.1 Ventilation. Under-floor spaces shall be ventilated as prescribed in 1203.3.
Where such spaces are ventilated by a dedicated continuously operated fan-powered
ventilation system, such fans shall be of the type required by Section 1211.11.1.1 for
radon-resistant construction methods. Sufficient make-up air shall be provided from the
conditioned spaces in the building by outside-air inlets in the HVAC return-air system,heat
28
recovery ventilators or by approved methods considering the impact of negative pressures
created by exhaust fans, clothes dryers and similar appliances.
1203.3.2 Under-floor spaces beneath above-grade floors. Under-floor spaces directly
below floors that are located entirely above grade shall be ventilated by one of the methods
as set forth in 1203.3.2. Exposed ground surface in such spaces shall be covered with an
approved vapor and soil-gas retarder material. All joints in the retarder shall be overlapped
by 6 inches(153 mm)and sealed or taped,with the retarder edges extending a minimum of
6 inches (153 mm)up the foundation wall and attached and sealed thereto in an approved
manner.
1203.3.2.1. Non-conditioned under-floor spaces. Where thermally-isolated above-
grade floor systems are insulated and sealed to reduce heat loss and air infiltration from
non-conditioned under-floor spaces below, as prescribed by the 2006
INTERNATIONAL ENERG Y CONSER VA TION CODE,exterior ventilation openings
may be used provided that such spaces do not contain HVAC appliances and the
ventilation can be provided directly through openings in an exterior wall. The
minimum total net free area of exterior ventilation openings shall not be less than
111,500 of the floor area of the under-floor space. Openings shall be placed so as to
provide cross-ventilation of the space and shall be covered for their height and width
with any of the following materials provided that the least dimension of the covering
shall not exceed 1/4 inch(6.4 mm).
1. Perforated sheet metal plates not less than 0.070 inch (1.8 mm) thick.
2. Expanded sheet metal plates not less than 0.047 inch(1.2 mm) thick.
3. Cast iron grills or grating.
4. Extruded load-bearing brick vents.
5. Hardware cloth of 0.035 inch(0.89 mm) wire or heavier.
6. Corrosion-resistant wire mesh, with the least dimension being 1/8 inch(3.2
mm).
1203.3.2.2. Conditioned under-floor spaces. Where the perimeter walls enclosing
conditioned under-floor spaces regulated under 1203.3.2 are thermally insulated and
sealed to reduce air infiltration as prescribed by the 2006INTERNATIONAL ENERGY
CONSER VA TION CODE, ventilation of the under-floor space shall be accomplished
by approved methods including a continuously operated mechanical ventilation at the
rate of 1.0 cfm (1.02 L/s) for each 50 square feet (10 m2) of under floor space floor
area, or by conditioned air supplied from the building HVAC system either indirectly
through air-transfer openings or directly through supply-air ducts.
1203.3.3 Under-floor spaces beneath below-grade floors. Under-floor spaces that are
located partially or entirely below grade,and directly above which in the conditioned space
on the floor above fuel-buming environmental or service-water heating equipment is
installed, such equipment shall be power vented or direct vented (closed combustion
29
chamber)appliances as defined in the City Mechanical Code. Such under-floor spaces and
under-floor spaces located such that ventilation cannot be provided directly through
exterior wall openings, shall be provided with ventilation and space conditioning by a
continuously operated fan-powered ventilation system that provides ventilation at a rate of
7.5 cfm per person plus 0.01 cfm per square foot of total conditioned floor area in the home
computed on the basis of two occupants for the first bedroom and one occupant for each
additional bedroom.
The vent pipe served by the ventilation fan shall be constructed in accordance with Section
1211.5.1 for radon-resistant construction methods except that the intake inlet for such vent
riser pipe may be located above the gas-retarder membrane and at least 60 inches (1525
mm) from the nearest transfer floor opening. The intake inlet shall be covered with
corrosion-resistant wire mesh having openings with the least dimension being 1/8 inch(3.2
mm).
A minimum of one transfer floor opening shall be provided above the ventilated space for
every 250 square feet of under-floor space or portion thereof. The openings shall be sized
by dividing the fan ventilation rate by the total number of openings and determining the
opening size based on Table 1203.3. See Figure 1203.3 (1) for transfer floor detail.
Exceptions:
1.Engineered systems that maintain the relative humidity so that all surfaces in such under-
floor spaces have a surface humidity level no greater than 70%.
2.Engineered non-cellulose and other approved inorganic floor systems designed to be a
sealed system shall not require ventilation when corrosion of the system components has
been considered and mitigated,assuming that the minimum required structural integrity of
such components is to be maintained for the life of the building.
The ground surface of the under floor space shall be covered with a vapor retarder material.
The vapor retarder shall be a minimum 10-mil non-reinforced polyethylene sheet when
tested in accordance with ASTM E154-99. The sheet shall be continuously sealed in an
approved manner to the foundation walls,to the interior caissons or footing pads,plumbing
lines and at all laps of multiple sheets. See Figure 1203.3 (2).
Table 1203.3
Exhaust Rate/Transfer
Opening cfm Opening Size, net free area
0-10 1.5 to 2.4 s . in. 1-3/8"to 1-3/4" dia. hole)
11-15 2.4 to 3.6 s . in. 1-3/4"to 2-1/8" dia, hole)
16-20 3.6 to 4.4 s . in. 2-1/8"to 2-3/8" dia. hole)
30
Figure 1203.3 (1)
Floor Transfer Detail
r--------
BASEMENT (CONOITIONED
EO SPODE)
DECK/ OOPENING FACE
MIN. CLEARANCE
FLOOR d e
CORMIORED--— j c a 4 d. .
- Ali- o a
ROVE DAMPER
a
2 } MN 1. PROMOE ROUGH OPENING
EM
IN FLOOR DECK TO A
CLEAR FORCE-FIT REGISTER. DO d Qe
FLOOR BOX 4 NOT PENETRATE FLOOR
RECEPTACLE STRUCTURAL MEMBERS. d
II u a.
DRILLED HOLE, DIAMETER PER TAGLEI&
CONCRETE m c n
®MIN. I UP FOUNDATION
WN1
�UNOER_FLOOR SPACES
NOTES:
lO FLOOR MR TRANSFER ASSEMBLY:
STANDARD FLOOR REGISTER OR GRILLE. MODIFY AS FOLLOWS:
8 DAMPER LEVER: REMOVE DAMPER ACTUATION LEVER (IF PRESENT).
} DAMPER: REMOVE GAMPER IF PRESENT.
Q4 PROVIDE SHEET METAL 'BOX-, SAME SIZE AS GRLLE OR REGISTER FLANGE.
5O PROVIDE CUT OR MILLED SHARP EDGE HOLE IN SIDE OF BOX CLOSEST TO FOUNDATION WALL AS FOLLOWS:
® NET OPENING THROUGH TRANSFER: IN ACCORDANCE WIM TABLE N.J.
® 'BOX' SMALL PROVIDE CODE INTENT FOR NON-COMBUSTIBLE RECEPTACLE IN ACCORDANCE WITH UMC 607 8 Inc
M1601.4.3. RECEPTACLE SHALL HAVE MINIMUM 1' VERTICAL LIP.
ALL TRANSFER OPENINGS SHALL BE THE SAME CROSS-SECTIONAL AREA +/- 10AL
DETAIL SHOWN IS SUGGESTED MEANS OF ACHIEVING SPECIFIED NET TRANSFER OPENING AREA AND
RECEPTACLE. ALTERNATE MEANS OF ACHIEVING THESE GOALS MAY BE USED AT DESIGNERS OPTION.
TABLE IVA: FREE AREA OF OPENING IN FLOOR BOX
EXHAUST RATE PER NET FREE AREA/HOLE DIAMETER
TRANSFER OPENING
0-9 CFM NOT APPLICABLE - TRANSFER AT LEAST
10 CFM THROUGH EACH OPENING
10-15 CFM 1.7 TO 2.6 SCAN. FREE AREA /
1-5/8' 0 drilled hole
16-20 CFM 2.6 TO 3.7 SCAN. FREE AREA /
2' 0 drilled hole
21-25 CFM 3.7 TO 4.7 SOAN, FREE AREA /
2-1/4' 0 drilled hole
26-30 CFM 4.7 TO 5.8 GOAN. FREE AREA /
(2-112' 0 drilled hole)
31
Figure 1203.3 (2)
o PROVIDE FLASHING
SYSTEMS TO ORAIN WATER
AWAY FROM BUILDING
OPENINGS.
FIRST FLOOR PROVIDE POSITIVE GRADE
AWAY FROM BUILDING PER
GEOTECHNICAL
RECOMMENDATIONS
a CONSIDER THE USE OF
TERMINATE DRAINS EXTERNAL INSULATION TO
DIRECTLY ABOVE RAISE THE INSIDE SURFACE
FLOOR FIXTURES. TEMPERATURE OF THE
FOUNDATION WALL (TO
REDUCE CONDENSATION),
ESPECIALLY IN GARDEN
LEVEL OR WALKOUT
ALLOW WETTED DECKING BASEMENTS.
TO DRY BEFORE
FINISHING FLOOR.
INTERIOR INSULATION WITHIN
L J BASEMENT STRUCTURAL FLOOR BELOW— GRADE UNDER—FLOOR
TT SPACE NOT RECOMMENDED,
o p.
PROVIDE MINIMUM
CLEARANCE BETWEEN 6" SEAL RETARDER TO WALL.
BOTTOM OF PIPE AND VOID HT ALTERNATE: EXTEND RETARDER
EARTH (WHERE PIPE 4• BELOW TO TOP OF FLOOR FULLY
CROSSES BELOW BOTTOM BEAN BEHIND LEDGER OR RIM JOIST.
OF STRUCTURE).
VAPOR RETARDER. FOUNDATION/ BASEMENT WALL PER
a - GEO7ECH AND STRUCTURAL DIVISION
.. r RECOMMENDATIONS
CONTROL MOISTURE OF SOILS DURING (�
¢ COVER VOID FORM WITH VAPOR
CONSTRUCTION. (SECTION I RE—GRADE �. RETARDER
NO CLEAN SURFACE OF SOIL
P PRIOR I 70
NSTALLATION OF VAPOR RETARDER w
INTERIOR OR EXTERIOR PERIMETER
EXTEND VAPOR BARRIER UP INTERIOR CONCRETE CAISSONS DRAIN SYSTEM PER GEOTECH
OR FOOTINGS. SEAL TO CONCRETE. DO NOT COVER RECOMMENDATIONS
STEEL OR STRUCTURAL WOOD MATERIAL. ATTACH AWAY
FROM COLUMN TO ALLOW THE CONCRETE TO BREATH.
32
1203.3.4 Access. Access shall be provided to all under-floor spaces. Access openings
through the floor shall be a minimum of 18 inches by 24 inches (457 mm by 610 mm).
Openings through a perimeter wall shall be 16 inches by 24 inches(407 mm by 610 mm).
When any portion of the through-wall access is below grade,an areaway of not less than 16
inches by 24 inches (407 mm by 610 mm) shall be provided. The bottom of the areaway
shall be below the threshold of the access opening. Through-wall access openings shall not
be located under a door to the building. See Section 1209.3 for access requirements where
mechanical equipment is located under floors.
Exception: Engineered non-cellulose and other approved inorganic floor systems
designed to be a sealed system shall not require ventilation when corrosion of the
system components has been considered and adequately mitigated, assuming that the
minimum required structural integrity of such components is to be maintained for the
life of the building.
1203.3.5 Vapor retarders. Class I or II vapor retarders are required on the interior side of frame
walls.
Exceptions:
1. Basement walls.
2. Below grade portion of any wall.
3. Construction where moisture or its freezing will not damage the materials.
1203.3.5.1 Class III vapor retarders. Class III vapor retarders shall be permitted
where any one of the conditions are met:
1. Vented cladding over OSB
2. Vented cladding over Plywood
3. Vented cladding over Fiberboard
4. Vented cladding over Gypsum
5. Insulated sheathing with R-value> R5 over 2x4 wall
6. Insulated sheathing with R-value> R7.5 over 2x6 wall
1203.3.5.2 Material vapor retarder class. The vapor retarder class shall be based
on the manufacturer's testing or a tested assembly. The following shall be deemed
to meet the class specified:
1. Class I: Sheet polyethylene, non-perforated aluminum foil
2. Class II: Kraft faced fiberglass batts or low perm paint (paint with 0.1 <
perm <= 1.0)
3. Class III: Latex or enamel paint
33
1203.3.5.3 Minimum clear air spaces and vented openings for vented cladding.
For the purposes of this section vented cladding shall include the following
minimum clear air spaces. Other openings with the equivalent vent area permitted.
1. Vinyl lap or horizontal aluminum siding applied over a weather-resistive
barrier as specified in Table R703.4 of the International Residential Code.
2. Brick veneer with a clear airspace as specified in Section R703.7.4.2 of the
International Residential Code.
3. Other approved vented claddings."
(45) CHAPTER 12 —INTERIOR ENVIRONMENT, is amended by adding a new section at the
end thereof to read as follows:
"SECTION 1211 —RADON-RESISTANT CONSTRUCTION
1211.1.1 Title. These provisions shall be known as the Fort Collins Radon-Resistant
Construction Code For Group R Division 2 Buildings;and shall be cited as such and will
be referred to herein as 'this code.'
1211.1.2 Scope. The provisions of this code shall apply to new multi-family dwellings.
1211.1.3 Purpose. The purpose of this code is to provide minimum requirements to
enhance the public safety, health and general welfare, through construction methods
designed and installed to resist entry of radon gas into the occupied spaces of buildings
regulated by this code.
SECTION 1211.2 - DEFINITIONS
1211.2.1 General. For the purpose of these requirements, the terms used shall be
defined as follows:
FOUNDATION DRAIN SYSTEM.A continuous length of drain tile,perforated pipe,
or filter mat extending around all or part of the internal or external perimeter of a
basement or crawl space footing designed to collect and drain away excess subsurface
water.
RADON.A naturally occurring,chemically inert,radioactive gas that is not detectable
by human senses. As a gas, it can move readily through particles of soil and rock and
can accumulate under the slabs and foundations of homes where it can easily enter the
living space through construction cracks and openings.
SOIL-GAS-RETARDER.A continuous membrane of 3-mil(0.075 mm)cross-linked
polyethylene or other equivalent material used to retard the flow of soil gases into a
building.
SUBFLOOR.A concrete slab and other approved permanent floor system that directly
contacts the ground and is within the walls of the living spaces of the building.
34
SUB-MEMBRANE DEPRESSURIZATION SYSTEM. A system designed to
achieve lower sub-membrane air pressure relative to crawl space air pressure by use of
a vent drawing air from beneath the soil-gas-retarder membrane.
SUB-SLAB DEPRESSURIZATION SYSTEM (Passive). A system designed to
achieve lower sub-slab air pressure relative to indoor air pressure by use of a vent pipe
routed through the conditioned space of a building and connecting the sub-slab area
with outdoor air, thereby relying on the convective flow of air upward in the vent to
draw air from beneath the slab.
SECTION 1211.3 - REQUIREMENTS
1211.3.1 General.The following required construction methods are intended to resist
radon entry and prepare the building for post-construction radon mitigation.
1211.3.2 Subfloor preparation. A layer of gas-permeable material shall be placed
under all subfloors. The gas-permeable layer shall consist of one of the following
methods except that where fills of aggregate size less than that described in Method 1
are used beneath a slab, Method 2,3, 4, or 5 must be used.
1.A uniform layer of clean aggregate,a minimum of 4 inches(102 mm)thick.The
aggregate shall consist of material that will pass through a 2-inch (51 mm) sieve
and be retained by a%-inch(6.4 mm)sieve.In buildings where interior footings or
other barriers separate sub-grade areas,penetrations through the interior footing or
barrier equal to a minimum of 12 square inches(0.094 m2)per 10 feet(3.048 m)of
barrier length shall be provided.A minimum of two penetrations shall be provided
per separation and be evenly spaced along the separation.
Exception: In buildings where interior footings or other barriers separate the
sub-grade area, separate radon vent pipes may be installed for each sub-grade
area as specified in Section 1211.5.2 in lieu of penetrations through the barrier.
2.A foundation drain pipe system installed under concrete floor slab areas less than
2,000 square feet(186 m2),consisting of a continuous loop of minimum 3-inch(76
mm) diameter perforated pipe shall be laid in the sub-grade with the top of pipe
located 1 inch(25.4 mm)below the concrete slab.The pipe may be rigid or flexible
but shall have perforations fully around the circumference with a free air space
equal to 1.83 square inches per square foot(127 cm2/m2) of exterior pipe surface
area. Such pipe shall be wrapped with approved filter material to prevent blocking
of pipe perforations. The pipe loop shall be located inside of the exterior perimeter
foundation walls not more than 12 inches(305 mm)from the perimeter foundation
walls. In buildings where interior footings or other barriers separate the sub-grade
area, the loop of pipe shall penetrate, or pass beneath such interior footings or
barriers. For slab areas greater than 2,000 square feet(186 m2) but less than 4,000
square feet (372 m2), the preceding configuration may be used, provided a
minimum of 4-inch diameter(102 mm) pipe is installed. Slabs in excess of 4,000
35
square feet (372 m2) shall have under them separate loops for every additional
2,000 square feet(186 m2)of slab area when 3-inch(76 mm)diameter pipe is used;
or, slabs may have separate loops provided for each additional increment in area
between 2,000 square feet (186 m2) and 4,000 square feet (372 m2) when 4-inch
(102 rum) diameter pipe is used.
3. A foundation drain soil gas collection mat system installed under concrete floor
slab areas of 2,000 square feet (186 m2) or less, consisting of a continuous
rectilinear loop of soil gas collection mat or drainage mat having minimum
dimensions of 1 inch in height by 12 inches in width(25.4 mm in height x 305 mm
in width) and a nominal cross-sectional air flow area of 12 square inches(0.0078
m2) may be laid on top of the sub-grade. The mat shall be constructed of a matrix
that allows for the movement of air through it and be capable of supporting the
concrete placed upon it.The matrix shall be covered by approved filter material on
all four sides to prevent dirt or concrete from entering the matrix.All breaches and
joints in the filter material shall be repaired prior to the placement of the slab. The
loop shall be located inside the exterior perimeter foundation walls and within 12
inches (305 mm)from the perimeter foundation walls. In buildings where interior
footings or other barriers separate the sub-grade area, the mat shall penetrate these
interior footings or barriers to form a continuous loop around the exterior
perimeter.
Slabs larger than 2,000 square feet (186 m2) but less than 4,000 square feet(372
m2) shall have under them an additional strip of mat that bisects the loop forming
two areas approximately equally divided by the two halves of the rectilinear loop.
Slabs larger than 4,000 square feet (372 m2) shall have separate loops for each
2,000(186 m2)square feet;or,increased to 4,000 square feet(372 m2)when a loop
is bisected as specified in the preceding configuration.
4. A uniform layer of sand(native or fill), a minimum of 4 inches(102 mm)thick,
overlain by a layer or strips of geo-textile drainage matting designed to allow the
lateral flow of soil gases.
5. Other materials,systems or floor designs with demonstrated capability to permit
depressurization across the entire sub-floor area.
1211.3.3 Entry routes.Potential radon entry routes shall be closed in accordance with
Sections 1211.3.4.1 through 1211.3.4.8
1211.3.3.1 Floor openings. Openings around bathtubs, showers, water closets,
pipes, wires or other objects that penetrate concrete slabs or other floor assemblies
shall be filled with a polyurethane caulk or equivalent sealant applied in accordance
with the manufacturer's recommendations.
1211.3.3.2 Concrete joints.All control joints, isolation joints,construction joints
and any other joints in concrete slabs or between slabs and foundation walls shall
36
be sealed with a caulk or sealant. Gaps and joints shall be cleared of loose material
and filled with polyurethane caulk or other elastomeric sealant applied in
accordance with the manufacturer's recommendations.
1211.3.3.3 Condensate drains. Condensate drains shall be trapped or routed
through non-perforated pipe to daylight.
1211.3.3.4 Sumps. Sump pits open to soil or serving as the termination point for
sub-slab or exterior drain tile loops shall be covered with a gasketed or otherwise
sealed lid. Sumps used as the suction point in a sub-slab depressurization system
shall have a lid designed to accommodate the vent pipe. Sumps used as a floor
drain shall have a lid equipped with a trapped inlet.
1211.3.3.5 Foundation walls. Hollow block masonry foundation walls shall be
constructed with either a continuous course of solid masonry, one course of
masonry grouted solid,or a solid concrete beam at or above finished ground surface
to prevent passage of air from the interior of the wall into the living space. Where a
brick veneer or other masonry ledge is installed,the course immediately below that
ledge shall be sealed. Joints, cracks or other openings around all penetrations of
both exterior and interior surfaces of masonry block or wood foundation walls
below the ground surface shall be filled with polyurethane caulk or equivalent
sealant. Penetrations of concrete walls shall be filled.
1211.3.3.6 Dampproofing. The exterior surfaces of portions of concrete and
masonry block walls below the ground surface shall be damp-proofed in
accordance with Section 1807.
1211.3.3.7 Air-handling units.Air-handling units in crawl spaces shall be sealed
to prevent air from being drawn into the unit.
Exception:Units with gasketed seams or units that are otherwise sealed by the
manufacturer to prevent leakage.
1211.3.3.8 Ducts.Ductwork passing through or beneath a slab shall be of seamless
material unless the air-handling system is designed to maintain continuous positive
pressure within such ducting.Joints in such ductwork shall be sealed to prevent air
leakage.Ductwork located in crawl spaces shall have all seams and joints sealed by
closure systems in accordance with the International Mechanical Code.
1211.3.4 Sub-membrane depressurization system. In buildings with interior
structural floors directly above under-floor spaces containing exposed soil surfaces that
37
are not protected by a sub-slab depressurization system, the following components of
sub-membrane depressurization system shall be installed during construction.
Exception: Buildings in which an approved mechanical ventilation system
complying with Section 1203 or such other equivalent system that provides
equivalent depressurization across the entire sub-membrane area as determined by
the building official is installed in the under-floor spaces.
1211.3.4.1 Ventilation. Crawl spaces and similar under-floor spaces shall be
provided with ventilation complying with Section 1203.
1211.3.4.2 Soil-gas-retarder. The exposed soil in under-floor spaces shall be
covered with a continuous layer of soil-gas-retarder. Such groundcover joints shall
overlap 6 inches (152 turn) and be sealed or taped. The edges of the groundcover
shall extend a minimum of 6 inches (152 mm) up onto all foundation walls
enclosing the under-floor space and shall be attached and sealed to foundation
walls in an approved manner.
1211.3.4.3 Vent pipe riser.A plumbing tee or other approved connection shall be
inserted horizontally beneath the sheeting and connected to a 3-or 4-inch-diameter
(76 mm or 102 mm)fitting with a vertical vent pipe installed through the sheeting.
The vent pipe shall be extended up through the building floors,terminate at least 12
inches(305 mm)above the roof in a location at least 10 feet(3.048 m)away from
any window or other opening into the conditioned spaces of the building that is less
than 2 feet (0.610 m) below the exhaust point, and 10 feet (3.048 m) from any
window or other opening in adjoining or adjacent buildings.
1211.3.5 Sub-slab depressurization system.The following components of sub-slab
depressurization system shall be installed during construction under basement or slab-
on-grade floors.
1211.5.1 Vent pipe riser. A minimum 3-inch-diameter (76 mm) ABS, PVC or
equivalent gas-tight pipe shall be embedded vertically into the sub-slab aggregate
or other permeable material before the slab is cast. A 'T' fitting or equivalent
method shall be used to ensure that the pipe opening remains within the sub-slab
permeable material. Alternatively, the 3-inch (76 mm) pipe shall be inserted
directly into an interior perimeter drain tile loop or through a sealed sump cover
where the sump is exposed to the sub-slab aggregate or connected to it through a
drainage system.
All vent pipes shall be extended up through the building floors, terminate at least
12 inches (305 mm) above the surface of the roof in a location at least 10 feet
38
(3.048 m)away from any window,air intake,or other opening into the conditioned
spaces of the building that is less than 2 feet(0.610 m) below the exhaust point,
and 10 feet(3.048 m) from any window or other opening in adjoining or adjacent
buildings. The discharge end of vent pipe terminations shall be unobstructed and
protected from small animal entry with a corrosion-resistant screen having
openings between ''/s inch(6.4 mm) and % inch(12.7 mm).
1211.3.5.2 Multiple vent pipes. In buildings where interior footings or other
barriers separate the sub-slab aggregate or other gas-permeable material,each area
shall be fitted with an individual vent pipe. Vent pipes shall connect to a single
vent that terminates above the roof or each individual vent pipe shall terminate
separately above the roof.
1211.3.6 Vent pipe drainage. All components of the radon vent pipe system shall be
installed to provide positive drainage to the ground beneath the slab or soil-gas
retarder.
1211.3.7 Vent pipe accessibility. Radon vent pipes shall be accessible for fan
installation through an attic or other area outside the habitable space.
Exception: The radon vent pipe need not be accessible in an attic space where an
approved roof-top electrical supply is provided.
1211.3.8 Vent pipe identification and notification. All exposed and visible interior
radon vent pipes shall be conspicuously identified with at least one label on each floor
and in attics provided with access openings. The label shall read substantially as
follows: 'Radon Reduction System.'In addition to the preceding label,a notice shall be
placed in a conspicuous area near the vent pipe that includes the following statement:
`THIS RADON REDUCTION SYSTEM IS NOT REQUIRED TO BE TESTED AND
IS A'PASSIVE'SYSTEM,RELYING ENTIRELY ON NATURAL VENTILATION.
OCCUPANTS ARE ADVISED TO TEST FOR RADON AND TAKE REMEDIAL
ACTION AS NECESSARY BY INSTALLING A CONTINUOUSLY OPERATING
FAN LOCATED IN THE VENT PIPE(ACCESS TYPICALLY PROVIDED IN THE
ATTIC) AND CONNECTED TO THE NEARBY PROVIDED ELECTRICAL
OUTLET. CALL 1-800-767-RADON FOR MORE INFORMATION.'
1211.3.9 Combination foundations. Combination basement/crawl space or slab-on-
grade/crawl space foundations shall have separate radon vent pipes installed in each
type of foundation area.Each radon vent pipe shall terminate above the roof or shall be
connected to a single vent that terminates above the roof.
39
1211.3.10 Building depressurization. Joints in air ducts and plenums in
unconditioned spaces shall be substantially air tight and permanently sealed with an
approved sealant,mastic,or other approved methods. Thermal envelope air infiltration
requirements shall comply with the energy conservation provisions in the energy
conservation code currently enacted by the City. Firestopping shall be in conformance
with the most recent general building code enacted by the City.
1211.3.11 Provisions for future depressurization fan installation. Permanent
provisions shall be made for the future installation of an in-line fan to be connected to
every radon vent pipe. Such designated fan locations shall be outside of the conditioned
envelope of the building, such as in the attic, garage and similar locations,excluding
crawl spaces and other interior under-floor spaces. Designated locations shall
accommodate an unobstructed permanent cylindrical space with the following
minimum dimensions: 12 inches (305 mm) measured radially around the radon vent
pipe along a vertical distance of 30 inches(760 turn). Designated fan locations shall be
permanently accessible for servicing and maintenance. An electrical circuit shall be
provided within 4 feet (1.219 m) of and within sight from designated fan locations.
Such circuit shall have a means of positive disconnection and be terminated in an
approved electrical outlet in accordance with the applicable current electric code.
1211.3.11.1 Depressurization fan system activation. When a passive system as
constructed in accordance with this code is to be converted to an active system,an
approved in-line fan shall be installed in a designated fan location as specified in
Section 1211.11.1. Additionally, an approved permanent electric light fixture and
in-line pipe couplings that facilitate fan replacement shall be provided. The in-line
fan shall be designed to operate continuously for a period of not less than five years
and have a minimum air-flow rating as established by the building official. A
readily accessible manometer or other approved warning device that notifies
occupants of a fan malfunction by a visible or audible signal shall be installed
within the dwelling unit."
40
(46)CHAPTER 13—ENERGYEFFICIENCY,is renamed,"ENERGY-EFFICIENT DESIGN AND
CONSTRUCTION", and is further amended to read as follows:
"SECTION 1301 —GENERAL
1301.1 Scope and purpose. For the purpose of establishing minimum requirements
concerning the minimum energy-efficiency of every building regulated by this code,including
its systems; new portions of such existing building and their related systems; and to new
systems and equipment in such existing building, every building shall be designed and
constructed according to 2006 International Energy Conservation Code as amended by the
city.
1301.2. Exterior and interior local design parameters. The following local design
parameters shall be used:
Winter Outdoor, Design Dry-bulb (OF) =4
Winter Indoor, Design Dry-bulb (OF) = 72
Summer, Outdoor Design Dry-bulb (OF) = 89
Summer, Indoor Design Dry-bulb CF) = 75
Summer, Design Wet-bulb (OF) =62
Degree days heating =6368
Degree days cooling =479
{For SI: °C = [(°F)-32]/1.8.]
(47) Section 1503.4 is amended to read as follows:
"1503.4 Roof drainage. Design and installation of roof drainage systems shall comply with
Section 1503 and the International Plumbing Code.
1503.4.1 Secondary drainage required. Secondary(emergency)roof drains or scuppers
shall be provided where the roof perimeter construction extends above the roof in such a
manner that water may be entrapped if the primary drains allow buildup for any reason.
1503.4.2 Scuppers. When scuppers are used for secondary (emergency overflow) roof
drainage, the quantity, size, location and inlet elevation of the scuppers shall be sized to
prevent the depth of ponding water from exceeding that for which the roof was designed as
determined by Section 1503.4.1. Scuppers shall not have an opening dimension of less than
4 inches (102 mm). The flow through the primary system shall not be considered when
locating and sizing scuppers."
(48) Section 1505—FIRE CLASSIFICATION is amended in the following respects:
(a) Section 1505.1 is amended to read as follows:
"1505.1 New Construction. The roof-covering classification on any new structure
regulated by this code shall be Class A.
41
EXCEPTIONS:
1. Noncombustible roof coverings as defined in Section 1507.3, 1507.4, 1507.5 may
be applied in accordance with the manufacturer's specifications in lieu of a fire-
retardant roofing assembly.
2. Any Class B or Class C roof covering may be applied on any new construction that
is added to an existing building classified as a Group R, Division 3 Occupancy,
provided the roof extremities of such existing building and new construction are
located a minimum distance of five(5)feet to the nearest adjacent property line and
are a minimum distance of ten(10) feet to another building."
(b) Table No. 1505.1, Minimum Roof Covering Classifications For Types of Construction,
is deleted.
(49) Section 1507 REQUIREMENTS FOR ROOF COVERINGS is amended in the following
respects:
(a)Section 1507.2.7 is amended by adding a new subsection thereto to read as follows:
"1507.2.7.1 Wind resistance. Asphalt shingles shall be tested in accordance with either
ASTM D 3161 or ASTM D 7158 for wind resistance. Asphalt shingles shall meet the
classification requirements of ASTM D 3161 D or F; or ASTM D 7158 G or H. Asphalt
shingle packaging shall indicate compliance with the required classification in Table
1507.2.7."
(b) A new, Subsection]50 7.16, is added at the end thereof to read as follows:
"1507.16 Roof gardens and landscaped roofs.Roof gardens and landscaped roofs shall
comply with the requirements of this chapter and Sections 1607.11.2.2 and 1607.11.2.3."
(50)Section 1510—REROOFING, is amended to read as follows:
"1510.1 General Reroofing. Except as otherwise provided hereunder, reroofing shall be
applied in accordance with this chapter and subject to the following conditions:
1. No portion of an existing nonrated roof covering may be permanently replaced or
covered with more than one square of nonrated roof covering.
2. Any existing roof covering system may be replaced with a roof covering of the same
materials and classification, provided the replacement roof covering has a minimum
rating of Class C."
42
(51) Table 1607.1 is amended to read as follows:
Table 1607.1 Change table rows 4, 5 and 28 to read as shown and delete row 9 "Decks": (S9-06107
Part 1)
TABLE 1607.1 MINIMUM UNIFORMLY DISTRIBUTED
LIVE LOADS AND MINIMUM CONCENTRATED LIVE UNIFORM (psf) CONCENTRATED (lbs.)
LOADS OCCUPANCY OR USE
4. Assembly areas and theaters
Fixed seats (fastened to floor) 60
Follow spot, projections, and control rooms 50 NA
Lobbies 100
Movable seats 100
Stages and platforms 125
Other assembly areas 100
5. Balconies (exterior)and decksh Same as NA
occupancy served
28. Residential One-and two-family dwellings:
Uninhabitable attics without storages 10
Uninhabitable attics with storage.,i.k 20
Habitable attics and sleeping areas 30 NA
All other areas 40
Hotels and multifamily dwellings:
Private rooms and corridors serving them 40
Public rooms and corridors serving them 100
NA— Not Applicable
h. See Section 1604.8.3 for decks attached to exterior walls. (Portions of table and footnotes not shown remain
unchanged)
(52)Section 1608.2, the first sentence is amended to read in its entirety as follows:
"1608.2 Ground Snow Loads.Buildings and other structures and all portions thereof that are
subject to snow loading shall be designed to resist such snow loads in accordance with
Appendix Chapter 16, Division I, wherein the 'ground snow load' Pg shall be 30 psf."
(53)Section 1609.3 is amended to read in its entirety as follows:
"1609.3 "Basic wind speed. The minimum basic wind speed for determining design wind
pressure shall be one hundred(100)miles per hour(161 kph)."
(54)Section 1803.2 is amended by adding a new subsection thereto to read as follows:
"1803.2.1 Final Grading. Final grading adjacent to the foundation shall be compacted
sufficiently and in such a manner such that is not undermined or subject to significant
settlement or displacement due to improper placement of backfill."
43
(55)Section 2302.1, the definition of TREATED WOOD is amended to read as follows:
"TREATED WOOD. Wood and wood based materials that use vacuum-pressure
impregnation processes to enhance fire retardant or preservative properties and shall include:
1. Fire-retardant-treated wood. Pressure-treated lumber and plywood that exhibit
reduced surface burning characteristics and resist propagation of fire.
2. Preservative-treated wood. Pressure-treated wood products that exhibit reduced
susceptibility to damage by fungi, insects or marine borers."
(56) Section 2304.9.5 is amended by adding Subsections 2304.9.5.1 through 2304.9.5.4 thereto to
read as follows:
"2304.9.5.1 Fasteners for preservative-treated wood. Fasteners for preservative-treated
wood shall be of hot-dipped zinc-coated galvanized steel, stainless steel, silicon bronze or
copper.Fasteners other than nails,timber rivets,wood screws and lag screws shall be permitted
to be of mechanically deposited zinc-coated steel with coating weights in accordance with
ASTM B 695, Class 55 minimum.
2304.9.5.2 Fastenings for wood foundations. Fastenings for wood foundations shall be as
required in AF&PA Technical Report No. 7.
2304.9.5.3 Fasteners for fire-retardant-treated wood used in exterior applications or wet
or damp locations. Fasteners for fire-retardant-treated wood used in exterior applications or
wet or damp locations shall be of hot-dipped zinc-coated galvanized steel, stainless steel,
silicon bronze or copper.Fasteners other than nails,timber rivets,wood screws and lag screws
shall be permitted to be of mechanically deposited zinc coated steel with coating weights in
accordance with ASTM B 695, Class 55 minimum.
2304.9.5.4 Fasteners for fire-retardant-treated wood used in interior applications.
Fasteners for fire-retardant treated wood used in interior locations shall be in accordance with
the manufacturer's recommendations. In the absence of manufacturer's recommendations,
Section 2304.9.5.3 shall apply."
(57) Section 2406.31tem 5 is amended to read as follows:
"5. Glazing in doors and enclosures for hot tubs, whirlpools, saunas, steam rooms, bathtubs
and showers. Glazing in any portion of a building wall enclosing these compartments
where the bottom exposed edge of the glazing is less than 60 inches (1524 mm) above a
standing surface and where any portion of such glazing is within forty-eight(48)inches of
an interior surface of a tub."
44
(58)Section 2902.1 is amended by adding a new subsection thereto to read as follows:
"2902.1.2 Touch-free toilet facilities. Toilet facilities installed for occupancies associated
with food preparation or food service to the public shall be provided with:
1. Automatic touch-free water control valves on lavatories.
2. Automatic touch-free paper towel dispensers.
3. Automatic flush controls on urinals and toilet stools.
4. Toilet facilities exit doors that allow exiting without requiring touching by hand, any door
hardware, such as knobs, levers, sliding bolts, latches and similar devices.
Exception: Toilet facilities designed as a single occupant use may be provided with exit
door locking hardware to afford privacy."
(59)Sections 3108.1 and 3108.2 are amended to read as follows:
"3108.1 General.Towers shall be designed and constructed in accordance with the provisions
of TIA-222.
3108.2 Location and access.Towers shall be located such that guy wires and other accessories
shall not cross or encroach upon any street or other public space,or over above-ground electric
utility lines,or encroach upon any privately owned property without the written consent of the
owner of the encroached-upon property, space or aboveground electric utility lines. Towers
shall be equipped with climbing and working facilities in compliance with TIA-222.Access to
the tower sites shall be limited as required by applicable OSHA, FCC and EPA regulations."
(60)Appendix C GROUP UAGRICULTURAL BUILDINGS is adopted in its entirety.
(61)Appendix E SUPPLEMENTARY ACCESSIBILITY REQUIREMENTS, is adopted in its
entirety.
(62)Appendix I PATIO COVERS is adopted in its entirety.
Section 3. That Section 5-28 of the Code of the City of Fort Collins is hereby amended
to read as follows:
See. 5-28. Defrntions.
The following words, terms and phrases, when used in Article II of this chapter and in
any code adopted by reference therein, shall have the meanings ascribed to them in this Section:
Whenever the word municipality,jurisdiction or city is used, it shall mean the City of
Fort Collins.
45
Whenever the term Building-Code Official or Code Official is used, the term shall be
synonymous with"Director of Neighborhood and Building Services"or authorized
representative.
Section 4. That all of the foregoing changes enacted by this Ordinance shall become
effective for implementation commencing July 1, 2008.
Introduced,considered favorably on first reading,and ordered published this 6th day of May
A.D. 2008, and to be presented for final passage on the 20th d May A.D. 2008.
57
!^^=-
Mayor
ATTEST:
��V ,�g -".
City Clerk
Passed and adopted on final reading this 20th day of May, A.D. 2008.
Mayor
ATTEST:
City Clerk
46
ORDINANCE NO . 50, 2008
OF THE COUNCIL OF THE CITY OF FORT COLLINS
AMENDING CHAPTER 5 , ARTICLE II, DIVISION 2, OF THE CITY CODE
FOR THE PURPOSE OF ADOPTING THE 2006 INTERNATIONAL
ENERGY CONSERVATION CODE (IECC) ®, WITH AMENDMENTS
WHEREAS , the current energy conservation design and construction code for new and
enlarged residential and commercial buildings (exclusive of detached one- and two-family dwellings
and multiple single-family dwellings [townhouses] not more than three (3 ) stories above grade and
their associated accessory structures) is based on ASHRAEJES 90. 1 -1989, Energy Efficient Design
of New Buildings Except Low-Rise Residential Buildings, promulgated by the American Society of
Heating, Refrigerating, and Air-Conditioning Engineers, Inc . and the Illuminating Engineering
Society of North America, as amended and enacted by the City in May 1998 ; and
WHEREAS , a volunteer code-review task group (represented by code officials from the City
of Fort Collins, Poudre Fire Authority, and Larimer County, the professional building and design
industries in the Larimer County region, and various other contributors as needed) has completed
an extensive review of the 2006 INTERNATIONAL ENERGY CONSERVATION CODER, the
companion ICC mid-triennial update in the form of the 2007 IECC SUPPLEMENT®, in addition
to the proposed local amendments thereto ; and
WHEREAS , the Affordable Housing Board, the Air Quality Advisory Board, the Building
Review Board, the Electric Board, the Health District of Northern Larimer County Board, the
Natural Resources Advisory Board, the Planning and Zoning Board, and the Commission on
Disability have made certain recommendations with respect to the adoption of the 2006
INTERNATIONAL ENERGY CONSERVATION CODER and proposed amendments; and
WHEREAS , the Council of the City of Fort Collins has determined that it is in the best interest of
the health, safety and welfare of the City and its citizens that the 2006INTERNATIONAL ENERGY
CONSERVATION CODER, as amended be adopted.
NOW, THEREFORE, BE IT ORDAINED BY THE COUNCIL OF THE CITY OF FORT
COLLINS that Chapter 5 , Article II, Division 2 of the Code of the City of Fort Collins is hereby
amended and revised in the following respects :
Section 1 . That Section 5 -26 subparagraphs (b) and (c) of the Code of the City of Fort
Collins are hereby repealed and reenacted to read as follows :
(b) There is hereby adopted by reference, the latest published version (2007or
subsequent regularly updated edition thereafter, whichever is newer) of ASHRAE/IESNA
90. 1, Energy Efficient Design of New Buildings Except Low-Rise Residential Buildings,
promulgated by the American Society of Heating, Refrigerating, and Air-Conditioning
Engineers, Inc . and the Illuminating Engineering Society of North America, as amended by
the City. Said standard as amended shall apply exclusively to the design and construction
of new buildings and their systems ; new portions of existing buildings and their systems ; and
to new systems and equipment in existing buildings for the purpose of establishing
requirements for minimum energy-efficiency, exclusive of detached one- and two-family
dwellings, multiple single-family dwellings (townhouses), and multiple-family buildings not
more than three (3 ) stories above grade .
(c) There is hereby adopted by reference, the 2006International Energy Conservation
Code (IECC)®, published by the International Code Council (ICC)®, as amended by the City,
which shall apply exclusively to the design and construction of all buildings that are
classified as residential buildings not more than three (3 ) stories above grade and their
systems; new portions of such existing buildings and their systems ; and to new systems and
equipment in such existing buildings, exclusive of detached one- and two-family dwellings,
multiple single-family dwellings (townhouses), for the purpose of establishing minimum
requirements for minimum energy-efficiency.
Section 2 . That Section 5 -31 Code of the City of Fort Collins is hereby enacted to read
as follows :
Sec. 5-31 . Amendments and deletions to code.
The 2006 International Energy Conservation Code (IECC)® adopted herein is hereby
amended in the following respects :
( 1 ) Section 101, SCOPE AND GENERAL REQUIREMENTS, is amended to read as follows :
"SECTION 101 — SCOPE AND GENERAL REQUIREMENTS
101 . 1 Title. This code shall be known as the International Energy Conservation Code of the
City of Fort Collins and shall be cited as such. It is referred to herein as "this code. "
101 .2 Scope. This code applies to all buildings, exclusive of those residential and accessory
buildings regulated by the International Residential Code currently in effect as enacted by
the City.
101 .3 Intent. This code shall regulate the design and construction of buildings for the
effective use of energy. This code is intended to provide flexibility to permit the use of
innovative approaches and techniques to achieve the effective use of energy. This code is
not intended to abridge safety, health or environmental requirements contained in other
applicable codes or ordinances .
101 .4 Applicability. Where, in any specific case, different sections of this code specify
different materials, methods of construction or other requirements, the most restrictive shall
govern. Where there is a conflict between a general requirement and a specific requirement,
the specific requirement shall govern.
101 .4. 1 Existing buildings . Except as specified in this chapter, this code shall not be
used to require the removal, alteration or abandonment of, nor prevent the continued
use and maintenance of, an existing building or building system lawfully in existence
at the time of adoption of this code.
-2-
101 .4.2 Historic buildings. Any building or structure that is listed in the State or National
Register of Historic Places ; designated as a historic property under local or state designation
law or survey; certified as a contributing resource with a National Register listed or locally
designated historic district; or with an opinion or certification that the property is eligible to
be listed on the National or State Registers of Historic Places either individually or as a
contributing building to a historic district by the State Historic Preservation Officer or the
Keeper of the national Register of Historic Places, are exempt from this code .
101 .4.3 Additions, alterations, renovations or repairs . Additions, alterations, renovations
or repairs to an existing building, building system or portion thereof shall conform to the
provisions of this code as they relate to new construction without requiring the unaltered
portion(s) of the existing building or building system to comply with this code . Additions,
alterations, renovations, or repairs shall not create an unsafe or hazardous condition or
overload existing building systems . An addition shall be deemed to comply with this code
if the addition alone complies or if the existing building and addition, comply with this code
as a single building.
Exception : The following need not comply provided the energy use of the building
is not increased:
l . Storm windows installed over existing fenestration.
2 . Glass only replacements in an existing sash and frame.
3 . Existing ceiling, wall or floor cavities exposed during construction
provided that these cavities are filled with insulation.
4. Construction where the existing roof, wall or floor cavity is not exposed.
5 . Reroofing for roofs where neither the sheathing nor the insulation are
exposed. Roofs without insulation in the cavity and where the sheathing
or insulation is exposed during reroofing shall be insulated either above
or below the sheathing.
6 . Replacement of existing doors that separate conditioned space from the
exterior shall not require the installation of a vestibule or revolving door,
provided, however, that an existing vestibule that separates a conditioned
space from the exterior shall not be removed.
7 . Alterations that replace less than 50% of the luminaires in a space
provided that such alterations do not increase the installed interior
lighting power.
8 . Alterations that replace only the bulb and ballast within the existing
luminaires in a space provided that the alteration does not increase the
installed interior lighting power.
101 .4.4 Change in occupancy or use. Spaces undergoing a change in occupancy that would
result in an increase in demand for either fossil fuel or electrical energy shall comply with
this code. Where the use in a space changes from one use in Table 505 . 5 .2 to another use in
Table 505 . 5 . 2, the installed lighting wattage shall comply with Section 505 . 5 .
-3 -
101 .4.5 Change in space conditioning. Any nonconditioned space that is altered to become
conditioned space shall be required to be brought into full compliance with this code ."
(2) Section 102. 1 is amended by adding, new Subsection 102. 1. 4, to read as follows :
" 102. 1 .4 Insulation product rating. The thermal resistance (R-value) of insulation shall be
determined in accordance with the U. S . Federal Trade Commission R-value rule (CFR Title
16, Part 460, May 31 , 2005 ) in units of h • fe • °F/Btu at a mean temperature of 75 °F ."
(3 ) SECTION 105, is amended to read as follows :
"SECTION 105 — PERMITS, FEES, AND INSPECTIONS
105. 1 General. Procedures related to permits, required inspections, payment of fees, and
obtaining required approvals shall be as set forth in, CHAPTER 1 ADMINISTRATION, of
the International Building Code currently in effect as adopted by the city."
(4) New, SECTION 108 and SECTION 109, are added at the end of CHAPTER 1
ADMINISTRATION, to read as follows :
"SECTION 108 — APPEALS
108. 1 General. Appeals of decisions , determinations, and interpretations of this code shall
be made pursuant to applicable provisions as set forth in, CHAPTER 1
ADMINISTRATION, of the International Building Code currently in effect as adopted by the
city.
SECTION 109 — VIOLATION PENALTIES
109. 1 General. Persons who commit violations of or fail to comply with the requirements
of this code shall be subject to the penalties set forth in, CHAPTER 1-ADMINISTRATION,
of the International Building Code currently in effect as adopted by the city."
(5) SECTION 202 GENERAL DEFINITIONS, is amended in the following respects :
(a) The definition of CODE OFFICIAL, is amended to read as follows :
"CODE OFFICIAL. Is the executive building-code official or such official ' s authorized
representative as defined in Section 103 . 1 of the amended International Building Code
adopted by the city."
(b) The following new definitions are inserted such that of all definitions of Section 202
therein are maintained in alphabetical sequence :
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"C-FACTOR (THERMAL CONDUCTANCE). The coefficient of heat transmission
(surface to surface) through a building component or assembly, equal to the time rate of
heat flow per unit area and the unit temperature difference between the warm side and
cold side surfaces (Btu/h • ft2 • °F) [W/(m2 • K)] . "
"DAYLIGHT ZONE :
1 . Under skylights : The area under skylights whose horizontal dimension, in each
direction, is equal to the skylight dimension in that direction plus either the floor to
ceiling height or the dimension to a ceiling height opaque partition, or one-half the
distance to adjacent skylights or vertical fenestration, whichever is least.
2 . Adjacent to vertical fenestration: The area adjacent to vertical fenestration which
receives daylight through the fenestration. For purposes of this definition and unless
more detailed analysis is provided, the daylight zone depth is assumed to extend into the
space a distance of 15 feet or to the nearest ceiling height opaque partition, whichever
is less . The daylight zone width is assumed to be the width of the window plus two feet
on each side, or the window width plus the distance to an opaque partition, or the
window width plus one-half the distance to adjacent skylight or vertical fenestration,
whichever is least."
"DEMAND CONTROL VENTILATION (DCV). A ventilation system capability that
provides for the automatic reduction of outdoor air intake below design rates when the
actual occupancy of spaces served by the system is less than design occupancy."
"ENTRANCE DOOR. Fenestration products used for ingress, egress and access in non-
residential buildings, including, but not limited to, exterior entrances that utilize latching
hardware and automatic closers ; and contain over 50% glass specifically designed to
withstand heavy use and possibly abuse. "
"F-FACTOR. The perimeter heat loss factor for slab-on-grade floors (Btu/h • ft °F)
[W/(m • K)] "
"HIGH-EFFICACY LUMINAIRE . A lighting fixture that does not contain a medium
screw base socket (E24/E26) and whose lamps have a minimum efficacy of:
1 . 60 lumens per watt for lamps over 40 watts,
2 . 50 lumens per watt for lamps over 15 watts to 40 watts,
3 . 40 lumens per watt for lamps 15 watts or less ."
"RESIDENTIAL BUILDING. For this code, is limited to R-2 and R-4 buildings, and
to R-3 buildings (excluding those buildings specifically regulated by the City Residential
Building Code) , all of which are three stories or less in height above grade."
"STOREFRONT. A non-residential system of doors and windows mulled as a
composite fenestration structure that has been designed to resist heavy use . Storefront
systems include, but are not limited to, exterior fenestration systems that span from the
floor level or above to the ceiling of the same story on commercial buildings. "
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(6) CHAPTER 3 CLIMATE ZONES, is amended to read as follows :
"CHAPTER 3—CLIMATE ZONES
SECTION 301
301 . 1 Exterior and interior local design parameters. The following local design
parameters shall be used:
Winter Outdoor, Design Dry-bulb ff) = 4
Winter Indoor, Design Dry-bulb ff) = 72
Summer, Outdoor Design Dry-bulb ff) = 89
Summer, Indoor Design Dry-bulb ff) = 75
Summer, Design Wet-bulb ff) = 62
Degree days heating = 6368
Degree days cooling = 479
{For SI : °C = [ff)-32]/ 1 . 8 . } "
(7) Section 401 . 3 is amended to read as follows :
"401 .3 Certificate. A permanent certificate shall be posted on or in the electrical distribution
panel. The certificate shall not cover or obstruct the visibility of the circuit directory label,
service disconnect label or other required labels . The certificate shall be completed by the
builder or registered design professional . The certificate shall list the predominant R-values
of insulation installed in or on ceiling/roof, walls, foundation (slab, basement wall,
crawlspace wall and/or floor) and ducts outside conditioned spaces; U-factors for
fenestration; and the solar heat gain coefficient (SHGC) of fenestration. Where there is more
than one value for each component, the certificate shall list the value covering the largest
area. The certificate shall list the types and efficiencies of heating, cooling and service water
heating equipment. Where an electric furnace, and/or baseboard electric heater is installed
in the residence, the certificate shall list electric furnace, or baseboard electric heater as
appropriate . An efficiency shall not be listed for room heaters, electric furnaces, or electric
base board heaters. "
(8) Section 402. 1 . 4 is amended to read as follows :
"402. 1 .4 Total UA alternative. If the total building thermal envelope UA (sum of U-factor
times assembly area) is less than or equal to the total UA resulting from using the U-factors
in Table 402 . 1 . 3 (multiplied by the same assembly area as in the proposed building), the
building shall be considered in compliance with Table 402 . 1 . 1 . The UA calculation shall be
done using a method consistent with the ASHRAE Handbook of Fundamentals and shall
include the thermal bridging effects of framing materials . The SHGC requirements and the
mandatory requirements specified in Section 404 . 2 shall be met in addition to UA
compliance . "
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($9) Section 402. 2. 8 is amended to read as follows :
"402.2.8 Crawl space walls. As an alternative to insulating floors over crawl spaces, crawl
space walls shall be permitted to be insulated when the crawl space is not vented to the
outside. Crawl space wall insulation shall be permanently fastened to the wall and extend
downward from the floor to the finished grade level and then vertically and/or horizontally
for at least an additional 24 inches (610 mm) . Exposed earth in unvented crawl space
foundations shall be covered with a continuous Class I vapor retarder. All j oints of the vapor
retarder shall overlap by 6 inches ( 153 mm) and be sealed or taped. The edges of the vapor
retarder shall extend at least 6inches ( 153 mm) up the stem wall and shall be attached to the
stem wall. "
(910) Section 402. 4 is amended to read as follows :
"402.4 Maximum fenestration U-factor and SHGC . (Mandatory). The area weighted
maximum fenestration U-factor permitted using trade offs from Section 402 . 1 .4 or Section
404 shall be 0 .48 for vertical fenestration. "
( 101 ) Section 402. 4. 1 is amended to read as follows :
"402.4. 1 Building thermal envelope. The building thermal envelope shall be durably sealed
to limit infiltration. The sealing methods between dissimilar materials shall allow for
differential expansion and contraction. The following shall be caulked, gasketed,
weatherstripped or otherwise sealed with an air barrier material, suitable film or solid
material :
1 . All joints, seams and penetrations .
2 . Site-built windows, doors and skylights .
3 . Openings between window and door assemblies and their respective jambs and
framing.
4. Utility penetrations .
5 . Dropped ceilings or chases adjacent to the thermal envelope .
6 . Knee walls .
7 . Walls and ceilings separating a garage from conditioned spaces .
8 . Behind tubs and showers on exterior walls.
9 . Common walls between dwelling units .
10 . Attic access openings .
11 . Other sources of infiltration. "
( 1 -f2) Section 402. 4. 3 is amended to read as follows :
"402.4.3 Recessed lighting. Recessed luminaires installed in the building thermal envelope
shall be sealed to limit air-leakage between conditioned and unconditioned spaces . All
recessed luminaires shall be IC-rated and labeled as meeting ASTM E 283 when tested at
1 . 57 psi (75 Pa) pressure differential with no more than 2 . 0 cfm (0 . 944 L/s) of air movement
from the conditioned space to the ceiling cavity. All recessed luminaires shall be sealed with
a gasket or caulk between the housing and the interior wall or ceiling covering."
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( 123 ) Section 403. 2. 1 is amended to read as follows :
403.2. 1 Insulation. Supply ducts in attics shall be insulated to a minimum of R- 8 . All other
ducts shall be insulated to a minimum of R-6 .
Exception : Ducts or portions thereof located completely inside the building thermal
envelope.
( 1s4) New, Section 403. 7 is amended to read as follows :
"403.7 Systems serving multiple dwelling units . Systems serving multiple dwelling units
shall comply with Chapter 5 in lieu of Section 403 ."
( 145) Section 404. 2 is amended to read as follows :
404.2 Mandatory requirements. Compliance with this Section requires that the criteria of
Sections 401 , 402 .2 . 61 402 .2 . 71 402 . 2 . 81 402 .41 402 . 5 , 402 . 6, and 403 must be met.
( 156) Section 404. 4. 2 is amended to read as follows :
"404.4.2 Compliance report. Compliance software tools shall generate a report that
documents that the proposed design complies in accordance with Section 404 . 3 . The
compliance documentation shall include the following information:
1 . Address or other identification of the residence;
2 . An inspection checklist documenting the building component characteristics of
the proposed design as listed in Table 404 . 5 .2( 1 ) . The inspection checklist shall
show results for both the standard reference design and the proposed design, and
shall document all inputs entered by the user necessary to reproduce the results ;
3 . Name of individual completing the compliance report; and
4. Name and version of the compliance software tool.
Exception : Multiple Orientations . When an otherwise identical building model is offered
in multiple orientations, compliance for any orientation shall be permitted by documenting
that the building meets the performance requirements in each of the four cardinal (north,
east, south and west) orientations ."
( 1 -57) Table 404. 5. 2(1) SPECIFICATIONS FOR THE STANDARD REFERENCE AND
PROPOSED DESIGNS, is amended in the following respects :
(a) In the cell located under the column, STANDARD REFERENCE DESIGN, and in the
Row, GLAZING, all three numerical entries for "glazing area" and expressed as either,
" 18%" or " 18% of conditioned floor area", are amended to read, " 15%".
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(b) In the cell located under the column, STANDARD REFERENCE DESIGN, and in the
Row, THERMAL DISTRIBUTION SYSTEMS, the Thermal Distribution system
efficiency (DSE) numerical value of "0. 80", is amended to read, "0.88" .
( 168) CHAPTER 4 is amended by adding a new section at the end thereof to read as follows :
"SECTION 405 — ELECTRICAL POWER AND LIGHTING SYSTEMS
405. 1 Interior lighting power (Prescriptive). Lighting in spaces, exclusive of dwelling
units, e .g. common areas, shall be high efficacy luminaires or shall comply with the interior
lighting power requirements in Chapter 5 .
Exception : Dwelling units ."
( 1 -79) CHAPTER 5 — COMMERCIAL ENERGY EFFICIENCY, is amended in the following
respects :
(a) Section 501. 1 is amended to read as follows :
"SECTION 501 — GENERAL
501 . 1 Scope. The requirements contained in this chapter are applicable to commercial
buildings, or portions of commercial buildings as defined in this code . As such, commercial
buildings shall meet the requirements of the most current published edition of
ASHRAEAESNA Standard 90. 1. Energy Standard for Buildings Except for Low-Rise
Residential Buildings, unless otherwise specified in this chapter."
(b) Section 501 . 2 is deleted.
(c) Section 502 is amended to read as follows :
"SECTION 502 — BELOW-GRADE WALLS AND SLAB FLOORS
502.2.4 Below-grade walls. The minimum thermal resistance (R-value) of the insulating
material installed in, or continuously on, the below-grade walls shall be R- 10 and shall
extend to a depth of 10 feet (3048 mm) below the outside finish ground level, or to the level
of the floor, whichever is less .
502 .2 Slabs on grade . The minimum thermal resistance (R-value) of the insulation around
the perimeter of unheated or heated slab-on-grade floors shall be continuous insulation with
an R-value not less than R-7 . 5 . The insulation shall be placed on the outside of the
foundation or on the inside of a foundation wall and shall extend downward from the top of
the slab for a minimum distance of 24 inches , or downward to at least the bottom of the slab
and then horizontally to the interior or exterior for a combined total of 24 inches . "
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(d)
POffE-RANDL16hVING SYSTEMS . and TAA�E :50:5. 5. 2, shall be retaine Sections 503,
504, and 506 are hereby deleted.
(+820) CHAPTER 6 REFERENCED STANDARDS, is amended by updating all referenced
standards under the heading, "ASHRAE", to refer to the most current published editions thereof
Section 3 . That all of the foregoing changes enacted by this Ordinance shall become
effective for implementation commencing July 1 , 2008 .
Introduced, considered favorably on first reading, and ordered published this 6th day of May,
A.D . 2008 , and to be presented for final passage on the 20th day of May, A.D . 2008 .
Mayor
ATTEST :
City Clerk
Passed and adopted on final reading on the 20th day of May, A . D . 2008 .
Mayor
ATTEST :
City Clerk
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