HomeMy WebLinkAbout019 - 02/04/2014 - AMENDING CHAPTER 5, ARTICLE II, DIVISION 2, OF THE CITY CODE FOR THE PURPOSE OF REPEALING THE 2009 I ORDINANCE NO. 019, 2014,
OF THE COUNCIL OF THE CITY OF FORT COLLINS
AMENDING CHAPTER 5, ARTICLE 11, DIVISION 2, OF THE CODE
OF THE CITY OF FORT COLLINS FOR THE PURPOSE OF '
REPEALING THE 20091NTERNATIONAL ENERGY CONSERVATION CODE (IECQ
AND ADOPTING THE 2012 INTERNATIONAL
ENERGY CONSERVATION CODE, WITH AMENDMENTS
WHEREAS, since 1924, the City has reviewed, amended and adopted the latest
nationally recognized building standards available for the times; and
WHEREAS, upon recommendation of City staff, the City Council has determined that it
is in the best interests of the City to align the five interconnected basic construction codes under
one publication year; and
WHEREAS, the five interconnected basic construction codes are the International
Building Code, International Residential Code, International Mechanical Code, International
Fuel Gas Code, and International Energy Conservation Code; and
WHEREAS, the City Council has determined that the 2012 publication year of the five
interconnected basic construction codes ought to be "adopted and that their counterpart codes
previously adopted should be repealed, both in order to align the publication years of the codes
and also because the 2012 publications contain improvements in construction code regulation;
and
WHEREAS, City staff has conducted a significant public outreach program, working
with the regulated construction industry and building professionals; and
WHEREAS, the adoption of the five interconnected basic construction codes has been
presented to and recommended by the Affordable Housing Board, the Commission on Disability,
the Air Quality Advisory Board, the Natural Resources Advisory Board, the Building Review
Board, the Electric Board, the Landmark Preservation Commission and the Water Board; and
WHEREAS, the City Council has determined that it is in the best interests of the citizens
of the City that more stringent insulation rating requirements should be established in order to
conserve energy and reduce monthly utility bills; and
WHEREAS, the City Council has determined that it is in the best interest of the health,
safety and welfare of the City and its citizens that the 2009 International Energy Conservation
Code, as amended be repealed, and that in its place, the 2012 International Energy Conservation
Code be adopted, with amendments.
NOW, THEREFORE, BE IT ORDAINED BY THE COUNCIL OF THE CITY OF
FORT COLLINS as follows:
Section 1. That Section 5-26(c) of the Code of the City of Fort Collins is hereby
amended to read as follows:
(c) Pursuant to the power and authority conferred on the City Council by Section 31-16-202,
C.R.S., and Article 11, Section 7 of the Charter, the City Council hereby repeals the 2009
International Energy Conservation Code (2009 IECC), and adopts, as the energy conservation
code of the City, the 2012 International Energy Conservation Code (2012 IECC) published by
the International Code Council, as amended by the City, which shall have the same force and
effect as though set forth in full herein and 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 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 of the Code of the City of Fort Collins is hereby
amended to read as follows:
Sec. 5-31. Amendments and deletions to code.
The 2012 INTERNATIONAL ENERGY CONSERVATION CODE adopted in § 5-26 is hereby
amended in the following respects:
COMMERCIAL
(1) Section CIOI.I Title is amended to read as follows:
11001.1 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."
(2) Section CIOI.4 Applicability is amended by the addition of a second paragraph to read as
follows:
"Information contained in the amended Commercial Sections: CIOI.1 Title; C101.4.3.1
Energy assessments, 003.6 Permits, C107 Fees; CIO7.3 Work commencing before
permit; C109 Board of Appeals; CHO Violations; CI10.2 Work commencing before
permit issuance; C202 Definitions; C301.4 Exterior and Interior design parameters;
C402.2 Specific insulation requirements, shall be applicable to the corresponding
Residential Sections and shall have the same meaning."
(3) Section C101.4.3.1 Energy assessment, is hereby added to read as follows:
"C101.4.3.1 Energy assessment. Prior to any alterations, an energy assessment shall be
required and submitted to the building official.
Exceptions: Energy assessments are not required in the following cases:
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1. Buildings for which the first Certificate of Occupancy was issued after
October 2010.
2. First-time interior finishes.
3. A building that has undergone an energy assessment within the previous
three years.
4. Alterations with a construction valuation of less than $50,000."
(4) Section C103.6Permits is added to read as follows:
"C103.6 Permits. Procedures related to. permits, required inspections, payment of fees
and obtaining required approvals shall be as set forth in Section 105 of the adopted
International Building Code, entitled `Permits'."
(5) Section 007 Fees is hereby amended in its entirety to read as follows:
"C107 Fees
C107 Payment of fees. All items relating to fees shall be as specified in Section 109 of
the adopted International Building Code, entitled `Fees'."
(6) Section CIOZ3 Work commencing before permit issuance is hereby deleted.
(7) Section C109 Board of Appeals is amended in its entirety to read as follows:
"C109.1 General. Appeals of decisions, determinations and interpretations of this code
shall be made pursuant to the applicable provisions of Section 113 of the adopted
International Building Code, entitled `Board of Appeals'. "
(8) Section CHO Violations is added to read as follows:
"C110.1 Violations. Any person who violates a provision of this code or fails to comply
with any of the requirements thereof or who erects, constructs, alters or repairs a building
or structure in violation of the approved construction documents or directive of the
building official, or of a permit or certificate issued under the provisions of this code,
shall be guilty of a misdemeanor and shall be subject to the penalties and fines specified
in Section 1-15 of the City Code."
(9) Section C110.2 Work commencing before permit issuance is hereby added to read as
follows:
"C110.2 Work commencing before permit issuance. In addition to the penalties set
forth in 110.1, 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 fine in addition to the standard prescribed permit fee. Said fine shall
be equal in.amount to the permit fee, except that it shall not be less than $50 nor more
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than $1,000 for the first such violation. A person or firm committing the same such
violation repeatedly shall be subject to a fine equal to double the amount of the permit fee
or double the amount of the fee imposed for the preceding violation, whichever is greater,
for every such subsequent violation committed within 180 days of a previous violation.
Said fines may be appealed to the City Manager pursuant to Chapter 2, Article VI of the
City Code."
(10) Section C202 DEFINITIONS, is hereby amended'by adding the following definitions in
alphabetical sequence as follows:
"CONTINUOUS AIR BARRIER: The combination of interconnected materials,
assemblies, and flexible sealed joints and components of the building thermal envelope
that provides air tightness to a specified permeability.
ELECTRIC HEAT: An indoor environmental primary heat source that is electric. A
ground-source electric heat pump designed by a licensed professional engineer shall not
be considered electric heat.
NON-ELECTRIC HEAT: An indoor environmental primary heat source that is gas or
that is a ground-source electric heat pump designed by a licensed professional engineer to
operate without the use of supplemental electric resistance heat."
(11) Section C301.4 Exterior and Interior Local Design Parameters is added to read as
follows:
"Exterior and Interior Local Design Parameters.
Winter Outdoor, Design Dry-bulb (OF) = 6
Winter Indoor, Design Dry-bulb (OF) = 72
Summer, Outdoor Design Dry-bulb (OF) =90
Summer, Indoor Design Dry-bulb (OF) = 75
Summer, Outdoor Design Wet-bulb (OF) = 62
Summer, Indoor Design Wet-bulb (OF) = 62
Degree Days heating = 6368
Degree days cooling = 479
Fort Collins is in Climate Zone 5."
(12) Section C401.1.1 Insulation and fenestration criteria is hereby amended by the addition
of an exception to read as follows:
"Exception: For buildings using electric heat at the power density of 1.5 Watts per
square foot or greater, the building thermal envelope values in Table C402.2(3), shall be
mandatory."
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(13) Section C402.1.2 U-Factor alternative is hereby amended by the addition of an
exception to read as follows:
"Exception: For buildings using electric heat at the power density of 1.5 Watts per
square foot or greater, the building thermal envelope values in Table C402.2(3), shall be
mandatory.
(14) Section C402.2 Specific insulation requirements is hereby amended by adding a second
paragraph to read as follows:
"Insulation installation requirements (Mandatory). In addition to the requirements of
Section C402.1, insulation shall meet the specific requirements of Sections C402.2.1 .
through C402.2.8. All insulation shall be installed to meet Residential Energy Services
Network (RESNET) Grade I standard.
Exception: RESNET Grade II is acceptable for cavity insulation in exterior walls that
include continuous rigid insulating sheathing and/or insulated siding with a minimum R-
value of 5, and rim joists."
(15) Table C402.2(3) Building thermal envelope is hereby added to read as follows:
"TABLE C402.2(3) (Mandatory)
BUILDING THERMAL ENVELOPE REQUIREMENTS FOR ELECTRIC HEAT
Opaque Elements Assembly Max. Insulation Min. R-Value
Roofs
Insulation Entirely above Deck U-0.039 R-25.0 ci
Metal Building U-0.035 R-19.0 + R-11.0 Ls
Attic and Other U-0.021 R-49.0
Walls, Above Grade
Massa U-0.080 R-13.3 ci
Metal Building U-0.052 R-13.0 + R-13.0 ci
Steel Framed U-0.055 R-13.0 + R-10.0 ci
Wood Framed and Other U-0.051 R-13.0 + R-7.5 ci
Wall, Below Grade
U-0.092 R-10.0 ci
Floors
Mass U-0.064 R-12.5 ci
Steel Joist U-0.026 R-30.0 + R-7.5 ci
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Wood Framed and Other U-0.032 R-38.0
Slab-On-Grade Floors
Unheated F-0.540 R-10 for 24 in..
Heated F-0.440 R-15.0 for 36 in. + R-5 ci below
Opaque Doors
Swinging U-0.4o0
r
—Non-Swinging U-0.400
Fenestration Assembly Max. U
Vertical Fenestration, (up to 40% of Wall
maximum)
Nonmetal framing: all' U-0.25
Metal fr: curtainwall/stonefront° U-0.35
Metal framing: entrance door` U-0.70
Metal framing: all other` U-0.45
Skylight(up to 3% of Roof maximum) U,11-0.50
SHGC U-0.40
The following definitions apply: ci=continuous insulation,Ls=liner system,NR=No(insulation)requirement.
a Mass walls with a heat capacity greater than 12 Btu/8z-°F which are unfinished or finished only on the interior do
not need to be insulated.
'Nonmetal framing includes framing materials other than metal with or without metal reinforcing or cladding.
` Metal framing includes metal framing with or without thermal break. The "all other" subcategory includes
operable windows,fixed windows,and non-entrance doors."
(16) Section C402.2.4 Thermal resistance of below-grade walls is hereby amended to read as
follows:
"C402.2.4 Thermal resistance of 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 (3,048 nun) below the outside
finish ground level, or to the level of the floor, whichever is less."
(17) Section C402.2.6 Slabs on grade is amended to read as follows:
"C402.2.6 Slabs on grade. The minimum thermal resistance (R-value) of the insulation
around the perimeter of unheated slab-on-grade floors shall be R-10 for 24 inches below.
The insulation shall be placed on the outside of the foundation or on the inside of a
foundation wall. The insulation shall extend downward from the top of the slab for a
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minimum distance as shown in the table or to the top of the footing, whichever is less, or
downward to at least the bottom of the slab and then horizontally to the interior or
exterior for the total distance shown in the table."
(18) Section C402.4 Air leakage (Mandatory) is hereby amended to read as follows:
"C402.4 Air leakage (Mandatory). The building thermal envelope shall be designed and
constructed with a continuous air barrier that complies with the following requirements
to control air leakage into, or out of, the conditioned space. The boundary limits and size
of the surface area (floor, wall, and ceiling or r000 of the building air barrier, and of the
zone or zones to be tested for maximum building air infiltration and exfiltration, shall be
clearly identified on the approved construction drawings. All air barrier components of
each building thermal envelope assembly shall be clearly identified on construction
documents and the joints, interconnections, and penetrations of the air barrier
components shall be detailed and shall comply with the following:
1. The air barrier shall be continuous throughout the building thermal envelope (at the
lowest floor, exterior walls, and ceiling or roof), with all joints and seams sealed and
with sealed connections between all transitions in planes and changes in materials and
at all penetrations.
2. The air barrier component of each assembly shall be joined and sealed in a flexible
manner to the air barrier component of adjacent assemblies, allowing for the relative
movement of these assemblies and components.
3. The air barrier shall be capable of withstanding positive and negative combined
design wind, fan, and stack pressures on the air barrier without damage or
displacement; and shall transfer the load to the structure, and shall not displace
adjacent materials under full load.
4. The air barrier shall be installed in accordance with the manufacturer's instructions
and in such a manner as to achieve the performance requirements.
5. Where lighting fixtures with ventilation holes or other similar objects are to be
installed in such a way as to penetrate the continuous air barrier, provisions shall be
made to maintain the integrity of the continuous air barrier.
Compliance of the continuous air barrier for the opaque building thermal envelope shall
be demonstrated by the following:
1. Materials. Using air-barrier materials that have an air permeability not to
exceed 0.004 cfm/ft'` under a pressure differential of 0.3 in. water (1.57 lb/ftz)
(0.02 L/s mz under a pressure differential of 75 Pa) when tested in accordance
with ASTM E2178;
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2 . Assemblies . Using assemblies of materials and components that have an
average air leakage not to exceed 0 . 04 cfm/ft2 under a pressure differential of 0 . 3
in. water ( 1 . 57 lb/ft2) (0 .2 L/same under a pressure differential of 75 Pa) when
tested in accordance with ASTM E2357 or ASTM E1677 ;
3, Building. Testing the completed building and documenting that the air
leakage rate of the building thermal envelope does not exceed 0 .25 cfm/ft2 under a
pressure differential of 0 . 3 in. water ( 1 . 57 lb/ft2) (0 .02 L/sm2 under a pressure
differential of 75 Pa) in accordance with the most current version of the City of
Fort Collins Building Air Leakage Test Protocol for commercial buildings or City
of Fort Collins Building Code Protocol for New Multifamily Building Air
Tightness Testing. Documentation of the testing results shall be submitted to the
building official prior to approval . "
(19) Section C402. 4. 1 Air barriers is hereby deleted in its entirety.
(20) Section C402. 4. 2 Air barrier penetrations is hereby deleted.
(21) Section C402. 4. 3 Air leakage of fenestration is hereby deleted.
(22) Section C402. 4. 4 Doors and access openings is hereby deleted.
(23) Section C402. 4. 5 Air intakes, exhaust openings is hereby deleted.
(24) Section C402. 4. 6 Loading dock weather-seals is hereby amended to read as follows :
"C402.4.6 Loading dock weather-seals. Cargo doors and loading dock doors shall be
equipped with weather-seals to restrict infiltration.
(25) Section C405. 2. 1. 2. 1 Occupant sensor controls is hereby added to read as follows :
"C405.2. 1 .2. 1 Occupant sensor controls . In new construction and additions that require
a building permit, occupant sensor controls shall be provided to automatically reduce
connected lighting power by not less than 50 percent during periods when no occupants
are present in the following locations :
1 . corridors and enclosed stairwells ;
2 . storage stack areas not open to the public;
3 , library stack areas; and
4. parking garages.
Lighting in means of egress shall comply with the luminance or uniformity criteria
required by the International Building Code when occupied.
Exception : Automatic power reduction shall not be used to control battery back-
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up emergency lighting and exit signage."
(26) Section C405.2.3 number 3 is hereby deleted.
(27) Section C405.1.4 Exterior lighting controls is hereby amended in its entirety to read as
follows:
"C405.2.4 Exterior lighting controls. In addition to any other applicable requirements
of this IECC, all outdoor lighting controls shall comply with the following requirements.
For lighting of building fagades, parking lots, garages, canopies (sales and non-sales), and
all outdoor sales areas, automatic controls.shall be installed to reduce the sum of all
lighting power (in watts) by a minimum of 50 percent two hours after normal business
closing, and to turn off outdoor lighting within 30 minutes after sunrise.
Exceptions:
1. Lighting required by a statute, ordinance, or regulation duly adopted for
the protection of public health, safety and/or human life, including but not limited
to, emergency lighting.
2. Lighting that is controlled by a motion sensor and photo-control.
3. Lighting for facilities that have equal lighting requirements at all hours
and are designed to operate continuously.
4. Temporary outdoor lighting.
5. Externally illuminated signs and signs that are either internally illuminated
or have integral lamps."
(28) Section C405.2.5 Sleeping unit controls is hereby added to read as follows:
"C405.2.5 Sleeping unit controls. In hotels and motels with over 20 guest rooms, the
lighting switched outlets, permanently wired luminaires, television, and heating,
ventilating and air conditioning system 'equipment serving each guest room shall be
automatically controlled so that lighting, switched outlets, permanently wired luminaires,
and televisions will be turned off and the heating, ventilating and air conditioning system
set point raised at least 5 degrees Fahrenheit (3 degrees centigrade) in the cooling mode
and lowered at least 5 degrees Fahrenheit (3 degrees centigrade) in the heating mode
whenever the guest room is unoccupied.
C405.2.5.1 Sleeping unit bathroom controls. All permanently wired luminaires located
in bathrooms within sleeping units in hotels, motels, boarding houses or similar buildings
shall be equipped with occupant sensors that require manual intervention to energize
circuits."
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(29) Section C405.8 Electricity distribution design is hereby added to read as follows:
"C405.8 Electricity distribution design requirements and load type isolation. Electric
distribution systems within, on or adjacent to and serving a new building shall be
designed in such fashion that each primary panel supplies only one electricity load type
as defined in Sections C405.8.1 through C405.8.5. The energy load type served by each
distribution panel shall be clearly designated on the panel with the use served, and
adequate space shall be provided for installation of metering equipment or other data
collection devices, temporary or permanent, to measure the energy use associated with
each distribution panel.
Exceptions:
1. Buildings with less than 600 amp electric service are exempted from this
requirement.
2. Electrical systems that are designed and constructed in such fashion that the total
usage of each of the load types as described in Sections C405.8.1 through
C405.8.5 shall be permitted to be measured through the use of installed sub-
meters or other equivalent methods as approved.
3. Group S and Group U occupancies
C405.8.1 Heating, ventilating, and air conditioning system electric load. This
category shall include all electricity used to heat, cool, and provide ventilation to the
building including, but not limited to, fans, pumps, and cooling energy.
C405.8.2 Lighting system electric load. This category shall include all electricity for
interior and exterior lighting used in occupant spaces and common areas.
C405.8.3 Plug loads. This category shall include all electricity use by devices, electric
appliances and equipment connected to convenience receptacle outlets.
C405.8.4 Process loads. This category shall include all electricity used by any single
load associated with activities within the building, such as, but not limited to, data
centers, manufacturing equipment and commercial kitchens, that exceed 5% of the total
energy use of the whole building."
C405.8.5 Miscellaneous loads. This category shall include all electricity use for all other
building operations and other operational loads."
(30) Section C408 System commissioning is hereby deleted in its entirety and amended to
read as follows:
"C408 System Commissioning shall be in conformance with Section 3604 of the
adopted International Building Code, entitled `Commissioning, Operations and
Maintenance'."
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RESIDENTIAL
(31) Section R401.2 Compliances is hereby amended to read as follows:
"R401.2 Compliance. Projects shall comply with "mandatory" Sections R401, R402.2 ,
R402.4, R402.5, R403.1, R403.2.2, R403.2.3, and R403.3 through R403.9 and with either
sections identified as "prescriptive" or the performance approach in Section R405."
(32) TABLE R402.1.1 Insulation and Fenestration Requirements by Component is hereby
amended to read as follows:
"TABLE R402.1.1
INSULATION AND FENESTRATION REQUIREMENTS BY COMPONENT
HEATING FENESTRATION SKYLIGHT' GLAZED CEILING WOOD MASS FLOOR BASE EMT SLAB' CRAWL,
SYSTEM U-FACTOR° U-FACTOR FENESTRATION R- FRAME WALL R- WALL R- SPACE
TYPE SHGC VALUE WALL R- VALUEe R-VALUE VALUE WALL
R-VALUE VALUES & R-
fg DEPTH VALUE
Non-Electric 0.32 255 NR 49 20 or 13/17 30 10/13h 10,2 15/19
heat 13+5 15/19i ft
Electric heat 0.30 0.55 NR 49 20+5 I5/19 30 15/19 10,4 15/19
ft
For SI: I foot=304.8mm
a. R-values are minimums. U-factors and SHGC are maximums. R-19 Batts compressed into a nominal 2x6 framing
cavity such that the R-value is reduced by R-I or more shall be marked with the compressed batt R-value in addition to
the full thickness R-value.
h. The fenestration U-factor column excludes skylights.The SHGC column applies to all glazed fenestration.
C. "15/19"means R-15 continuous insulation on the interior or exterior of the foundation wall or R-19 cavity insulation at
the interior of the foundation wall. "15119" shall be permitted to be met with R-13 cavity insulation on the interior of the foundation wall plus R-5 continuous insulation on the interior or exterior of the foundation wall. "10/13"means R-
10 continuous insulation on the interior or exterior of the foundation wall or R-13 cavity insulation at the interior of the
foundation wall.
d. R-5 shall be added to the required slab edge R-values for heated slabs.
e. Insulation shall fill the framing cavity, R-19 minimum.
f First value is cavity insulation,second is insulated sheathing or siding,so"20+5"means R-20 cavity insulation plus R-
5 insulated sheathing. If structural sheathing covers 25 percent or less of the exterior, insulating sheathing is not
required where structural sheathing is used. If structural sheathing covers more than 25 percent of the exterior,
structural sheathing shall be supplemented with insulated sheathing of at least R-2.
g The second R-value applies when more than half the insulation is on the interior of the mass wall.
h. All rimjoists and adjoining plates shall be air-scaled and insulated using spray foam insulation to R-15 minimum.
i. All rim joists and adjoining plates shall be air-sealed"
(33) TABLE R402.1.3 Equivalent U-Factors is hereby amended to read as follows:
"TABLE R402.1.3
EQUIVALENT U-FACTORSa
r
HEATING FENESTRATION SKYLIGHT CEILING FRAME MASS FLOOR BASEMENT CRAWL
SYSTEM U-FACTOR U-FACTOR R- WALL WALL U- WALL SPACE
TYPE VALUE U- U- FACTOR U- WALL
FACTOR FACTOR" FACTOR U-
FACTOR
Nonelectric 0.32 0.55 0.026 0.057 0.082 0.033 0.059 0.055
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heat
Electric heat 1 0.30 1 0.55 1 0.026 0.048 1 0.060 0.033 0.050 0.055
a. Non-fenestration U-factors shall be obtained from measurement,calculation or an approved source.
b. When more than half the insulation is on the interior, the mass wall U-factor shall be the same as the frame wall U-
factor."
(34) Section R402.2.1 Ceilings with attics spaces is hereby amended to read as follows:
"R402.2.1 Ceilings with attic spaces. When Section R402.1.1 would require R-38 in the
ceiling, R-30 shall be deemed to satisfy the requirement for R-38 wherever the full height
of uncompressed R-30 insulation extends over the wall top plate at the eaves. Similarly,
R-38 shall be deemed to satisfy the requirement for R-49 wherever the full height of
uncompressed R-38 insulation extends over the wall top plate at the eaves. This reduction
shall not apply to the U-factor alternative approach in Section R402.1.3 and the total UA
alternative in Section R402.1.4. At the eaves, the insulation extending over the exterior
wall top plate shall be R-19 minimum."
(35) Section R402.2.3 Eave baffle is hereby amended to read as follows:
"R402.2.3 Eave baffle and blocks. For air permeable insulations in vented attics with
ventilation from open or box soffits, a baffle shall be installed to provide ventilation from
the soffit to the attic adjacent to each soffit or eave vent.-In the case of continuous soffit
vents, enough baffles shall be installed to maintain the required attic ventilation from the
soffit. Baffles shall maintain an opening equal or greater than the size of the vent. The
ventilation baffle shall extend over the top of the attic insulation between rafters or
trusses, maintaining a minimum 1 inch clear opening below the roof deck and sufficient
space for the minimum depth of attic insulation. The baffle shall be permitted to be any
solid material. All other spaces between rafters or trusses shall be blocked at the outside
edge of the exterior wall top plate, with air impermeable materials so as to contain the
attic insulation."
(36) Section R402.2.ZI Rim insulation requirements is hereby added to read as follows:
"R402.2.7.1 Rim insulation requirements All rim plates and rim joist which are part of
the thermal envelope shall be air-sealed. All rim plates and rim joist which are part of the
thermal envelope shall be insulated using spray foam materials to R-15 minimum when
the basement walls are insulated to 10/13 in accordance with Table R402.1.1."
(37) Section 402.4.1 Building thermal envelope is hereby amended in its entirety to read as
follows:
"R402.4.1 Building thermal envelope. The building, or effective August 1, 2014,
individual dwelling units, shall be tested and verified as having an air leakage rate not
exceeding 3 air changes per hour. Testing shall be conducted with a blower door at a
pressure of 0.2 inches w.g. (50 Pascals) in accordance with Section 802 of the RESNET
Mortgage Industry National Home Energy Rating Standards or City of Fort Collins
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Building Code Protocol for New Multifamily Building Air Tightness Testing. Where
required by the building official, testing shall be conducted by an approved third party. A
written report of the results of the test shall be signed by the party conducting the test and
provided to the building official. Isolation of attached garages from adjoining conditioned
areas shall be verified in accordance with City of Fort Collins protocols.
Testing shall occur after rough-in and after installation of penetrations of the building
thermal envelope, including but not limited to penetrations for utilities, plumbing,
electrical, ventilation and combustion appliances.
General requirements during testing:
1. Exterior windows and doors, fireplace and stove doors shall be closed, but not
sealed beyond the intended weather-stripping or other infiltration control
measures.
2. Dampers including exhaust, intake, makeup air, backdraft and flue dampers shall
be closed, but not sealed beyond intended infiltration control measures.
3. Interior doors, if installed at the time of the test, shall be open.
4. Exterior doors for continuous ventilation systems and heat recovery ventilators
shall be closed and sealed.
5. Heating and cooling systems, if installed at the time of the test, shall be turned off.
6. Supply and return registers, if installed at the time of the test, shall be fully open.
7. Combustion air inlets shall not be closed or otherwise obstructed.
8. Garage doors to the exterior shall be closed.
In additions or alterations to existing buildings, air sealing compliance shall be
considered acceptable when the items listed in Table R402.4.1.1, applicable to the
method of construction, are field-verified."
(38) Section R402.5 Maximum fenestration U factor and SHGC is hereby amended to read
as follows:
"R402.5 Maximum fenestration U factor and SHGC. The area-weighted average
maximum fenestration U factor permitted, using trade-offs from Section R402.1.4 or
R405 shall be 0.40 for vertical fenestration and 0.75 for skylights.
(39) Section R403.2.1 Insulation is amended to read as follows:
"R403.2.1Insulation. (Mandatory) 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."
(40) Section R403.6 Equipment sizing (Mandatory) is hereby amended to read as follows:
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"R403.6 Equipment sizing (Mandatory) Heating and cooling systems shall be designed
in accordance with International Residential Code Section M1401 . 3 and performance
will be verified in accordance with International Residential Code Section M1309 . "
(41) Section R404. 1 Lighting equipment (Mandatory) is hereby amended to read as follows :
"R404. 1 Lighting equipment (Mandatory). A minimum of 75 percent of the lamps in
permanently installed lighting fixtures shall be high-efficacy lamps or a minimum of 50
percent of the permanently installed lighting fixtures shall contain only LED lamps .
Exception : Low-voltage lighting shall not be required to utilize high-efficiency lamps . "
(42) Section R404. 2 Occupant sensor controls, is hereby added to read as follows :
"R404.2 Occupant sensor controls. In multifamily buildings, occupant sensor controls
shall be provided to automatically reduce connected lighting power by not less than 50
percent during periods when no occupants are present in common corridors and common
enclosed stairwells .
Lighting in means of egress shall comply with the luminance or uniformity criteria
required by the International Building Code when occupied.
Exception : Automatic power reduction shall not be used to control battery back-up
emergency lighting and exit signage. "
(43) Chapter 6 REFERENCED STANDARDS is hereby amended by adding the following
additional referenced standard in alphabetical sequence :
Under the Heading of ICC .
"RESNETO Mortgage Industry National Home Energy Rating Systems Standards
Residential Energy Services Network, Inc .
P . O . Box 4561
Oceanside, CA 92052-4561
http ://resnet.us
RESNETO reference standard Grade I and Grade 11 Insulation
Referenced in Amended 2012 IECC Section C402 . 2 .
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Introduced, considered favorably on first reading, and ordered published this 21st day of
January, A.D. 2014, and to be presented for final passage on the 4th day of February, A.D. 2014.�
�yOF FO/2TCO Ma or
ATTEST:
• �� :cn
City Clerk —'RADD
Passed and adopted on final reading on the 4th day of February, A.D. 2014.
Mayo
ATTEST: �OF F�RTcO
City Clerk C 0 ..., • '
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