HomeMy WebLinkAbout031 - 03/22/2011 - AMENDING CHAPTER 5, ARTICLE II, DIVISION 2, OF THE CITY CODE FOR THE PURPOSE OF AMENDING THE 2009 IN ORDINANCE NO. 0311 2011,
OF THE COUNCIL OF THE CITY OF FORT COLLINS
AMENDING CHAPTER 5, ARTICLE II, DIVISION 2, OF THE CODE
OF THE CITY OF FORT COLLINS FOR THE PURPOSE OF
AMENDING THE 2009 INTERNATIONAL
ENERGY CONSERVATION CODE AS ADOPTED
WHEREAS, the City Council has determined that it is in the best interests of the health,
safety and welfare of the City and its citizens to better align Fort Collins' built environment with
community goals of improved indoor environmental quality, protection of the natural
environment, reduced carbon emissions, reduced energy use and reduced water use, and;
WHEREAS, City staff has conducted a significant public outreach program, working
with three advisory committees comprised of representatives from the residential and
commercial construction industries, specialized-trade contractors, housing industry, real estate
and appraisal industries, construction recycling industry, and regional code officials; and
WHEREAS, on February 2, 2011, the substance of the amendments was presented to the
Electric Board, and the Electric Board recommended approval of the amendments; and
WHEREAS, on February 3, 2011, the substance of the amendments was presented to the
Affordable Housing Board, and the Affordable Housing Board recommended against approval of
the amendments; and
WHEREAS, on February 9, 2011, the substance of the amendments was presented to the
Landmark Preservation Commission, and the Landmark Preservation Commission recommended
approval of the amendments; and
WHEREAS, on February 16, 2011, the substance of the amendments was presented to
the Economic Advisory Commission, and the Economic Advisory Commission recommended
approval of the amendments; and
WHEREAS, on February 16, 2011, the substance of the amendments was presented to
the Natural Resources Advisory Board, and the Natural Resources Advisory Board
recommended approval of the amendments; and
WHEREAS, on February 17, 2011, the substance of the amendments was presented to
the Water Board, and the Water Board considered water related elements and recommended
approval of those amendments; and
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WHEREAS, on February 24, 2011, the substance of the amendments was presented to
the Building Review Board, and the Building Review Board recommended against approval of
these amendments; and
WHEREAS, on February 28, 2011, the substance of the amendments was presented to
the Air Quality Advisory Board, and the Air Quality Advisory Board recommended approval of
these amendments; and
WHEREAS, based on input obtained through this outreach process, together with City
Council and advisory board review and comment, staff has developed proposed amendments to
the 2009 International Energy Conservation Code ("IECC") as set forth in this Ordinance; and
WHEREAS, the City Council has determined that it is in the best interests of the health,
safety and welfare of the City and its citizens that IECC as adopted be amended.
NOW, THEREFORE, BE IT ORDAINED BY THE COUNCIL OF THE CITY OF FORT
COLLINS as follows:
Section 1. That the opening paragraph contained in 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 2009 International Energy Conservation Code adopted in § 5-26 is hereby amended
in the following respects:
Section 2. That Section 5-31 of the Code of the City of Fort Collins is hereby amended
by the addition of a new subparagraph which reads in its entirety as follows:
Section 101.4.3.1 is hereby added to read as follows:
"101.4.3.1 Energy assessment. Prior to any alterations, an energy analysis of the entire
building shall be required and submitted to the Building Official.
Exceptions: Energy assessments are not required in the following cases.
1. First-time interior finishes.
2. A building that has undergone an energy assessment within the previous three
years.
3. Alterations with a construction valuation of less than $30,000."
Section 3. That Section 5-31 of the Code of the City of Fort Collins is hereby
amended by the addition of a new subparagraph which reads in its entirety as follows:
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Section 202 DEFINITIONS, is hereby amended to add 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 to operate
without the use of supplemental electric resistance heat 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."
Section 4. That Section 5-31 of the Code of the City of Fort Collins is hereby
amended by the addition of a new subparagraph which reads in its entirety as follows:
Section 401.2 is hereby amended in its entirety to read as follows:
"401.2 Compliance. Compliance shall be demonstrated by conforming with mandatory
Sections 401, 4402.2.12 ,402.4, 402.5, 403.1, 403.2.2, 403.2.3, and 403.3 through 403.9.
Section 5. That Section 5-31 of the Code of the City of Fort Collins is hereby
amended by the addition of a new subparagraph which reads in its entirety as follows:
Section 402, TABLE 402.1.1 is hereby amended in its,entirety to read-as follows:
"TABLE 402.1.1
INSULATION AND FENESTRATION REQUIREMENTS BY COMPONENT
HEATING FENESTRATION SKYLIGHT" GLAZED CEILING WOOD NIASS FLOOR BASEMENT` SLAB" CRAWL`
SYSTEM U-FACTOR" U-FACTOR FENESTRATION R-VALUE FRAME WALL R- WALL R- SPACE
TYPE SHGC WALL R- VALUE R-VALUE VALUE WALL
R-VALUE VALUE" & R-
DEPTH VALUE
Non- 0.35 0.60 NR 38 20 or 13/17 30 10/13 10, 2 10/13
electric 13+5F ft
heat
Electric 0.30 0.60 NR 49 20+5 15/19 30 15/19 10,4 15/19
heat I I I I I I I I I I ft
For SI: 1 foot=304.8mm
a. R-values are minimums. U-factors 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.
b. 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. `15/19" 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. Or insulation sufficient to till the framing cavity,R-19 minimum.
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f. "13+5" means R-13 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.
Section 6. That Section 5-31 of the Code of the City of Fort Collins is hereby
amended by the addition of a new subparagraph which reads in its entirety as follows:
Section 402 TABLE 402.1.3 is hereby amended in its entirety to read as follows:
"TABLE 402.1.3
EQUIVALENT U-FACTORSe
HEATING FENESTRATION SKYLIGHT CEILING FRAME MASS FLOOR BASEMENT CRAWL
SYSTEM U-FACTOR U-FACTOR R-VALUE WALL WALL U- WALL SPACE
TYPE U- U- FACTOR U-FACTOR WALL
FACTOR FACTOR" U-
FACTOR
Non-electric 0.35 • 0.60 0.030 0.057 0.082 0.033 0.059 0.065
heat
Electric heat 1 0.30 0.60 1 0.026 1 0.043 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."
Section 7. That Section 5-31 of the Code of the City of Fort Collins is hereby
amended by the addition of a new subparagraph which reads in its entirety as follows:
Section 402.2.12 is hereby added to read as follows:
11402.2.12 Specific insulation requirements. All insulation shall be installed to meet
Residential Energy Services Network (RESNET) Grade 1 standard.
Exceptions: RESNET Grade 11 is acceptable for:
1. cavity insulation in exterior walls that include continuous rigid insulating
sheathing and/or insulated siding with a minimum R-value of 5; and
2. rim joists"
Section 8. That Section 5-31 of the Code of the City of Fort Collins is hereby amended by
the addition of a new subparagraph which reads in its entirety as follows:
402.4.2 is hereby amended to read in its entirety as follows:
"402.4.2 Air sealing verification. Building thermal envelope air tightness shall be
demonstrated to comply with either Section N 1102.4.2.1 (new construction) or Section
N1102.4.2.2 (existing buildings):
402.4.2.1 Performance testing. 1n new construction, air sealing compliance shall
be demonstrated through performance testing by an approved agency in accordance with
the methods and standards specified herein. Documentation of testing results shall be
submitted to the Building Official prior to approval. When tested with a blower door at a
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pressure of 50 pascals (33.5 psf), the maximum building thermal envelope air leakage
rate shall not exceed:
1. three air changes per hour(ACH) in buildings with electric heat; or
2. four air changes per hour (ACH) in buildings with non-electric heat.
Isolation of attached garages from adjoining conditioned areas shall be verified
with an approved differential pressure test.
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.
During testing:
1. exterior windows and doors, fireplace and stove doors shall be
closed, but not sealed;
2. dampers shall be closed, but not sealed, including exhaust, intake,
makeup air, backdraft, and flue dampers;
3. interior doors shall be open;
4. exterior openings for continuous ventilation systems and heat
recovery ventilators shall be closed and sealed;
5. heating and cooling system(s) shall be turned off;
6. heating, ventilating and air conditioning ducts shall not be sealed;
7. supply and return air registers shall not be sealed;
8. combustion air inlets shall not be closed or otherwise obstructed;
and
9. garage doors to the exterior shall be closed.
402.4.2.2 Visual inspection. In additions or alterations to existing buildings, air-
sealing compliance shall be considered acceptable when the items listed in Table
N 1102.4.2, applicable to the method of construction, are field-verified."
Section 9. That Section 5-31 of the Code of the City of Fort Collins is hereby
amended by the addition of a new subparagraph which reads in its entirety as follows:
Section 402.5 is hereby amended to read as follows:
"402.5 Maximum fenestration U factor and SHGC. The area-weighted average
maximum fenestration U factor permitted, using trade-offs from International
Residential Code Section N 1102.1.3 or N 1102.4.4, shall be 0.40 for vertical fenestration
and 0.75 for skylights."
Section 10. That Section 5-31 of the Code of the City of Fort Collins is hereby
amended by the addition of a new subparagraph which reads in its entirety as follows:
Section 403.6 is hereby amended as follows:
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"403.6 Heating and cooling systems. 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 M1300."
Section 11. That Section 5-31 of the Code of the City of Fort Collins is hereby
amended by the addition of a new subparagraph which reads in its entirety as follows:
Section 404.2 is hereby added to read as follows:
"404.2 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 occupants are not 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."
Section 12. That Section 5-31 of the Code of the City of Fort Collins is hereby
amended by the addition of a new subparagraph which reads in its entirety as follows:
Section 502.1. is hereby amended by adding the following:
"502.1 General. All insulation shall be installed to Residential Energy Services Network
(RESNET) Grade I standard.
Exception: RESNET Grade II is acceptable for cavity insulation in exterior walls
that include continuous exterior insulation as specified in Table 502.2(I) installed
to RESNET Grade I standard."
Section 13. That Section 5-31 of the That Code of the City of Fort Collins is hereby
amended by the addition of a new subparagraph which reads in its entirety as follows:
An exception to Section 502.1.1 is hereby added to read as follows:
"Exception: For buildings using electric heat at the power density of 1.5 Watts per
square foot or greater, building thermal envelope values in Table 502.2(3), shall be
mandatory."
Section 14. That Section 5-31 of the Code of the City of Fort Collins is hereby
amended by the addition of a new subparagraph which reads in its entirety as follows:
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TABLE 502.2(3) is hereby added to read as follows:
"TABLE 502.2(3)
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
Below Grade Wall C-0.092 R-10.0 ci
Floors
Mass U-0.064, R-12.5 ci
Steel Joist U-0.032 R-38.0
Wood Framed and Other U-0.026 R-30.0 + R-7.5 ci
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-0.400
Non-Swinging U-0.400
Fenestration Assembly Max. U
Vertical Fenestration, (up to 40% of Wall
maximum)
Nonmetal framing: allb U-0.25
Metal fr: curtainwall/stonefront° U-0.35 The following definitions apply:
Metal framing: entrance door` U-0.70 ci = continuous insulation, Ls =
Metal framing: all other` U-0.45 liner system, NR = No
Skylight(up to 3% of Roof maximum) Uaii-0.60 (insulation)requirement.
a Mass walls with a heat capacity
greater than 12 Btu/ft2-T which
are unfinished or finished only on the interior do not need to be insulated.
b 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."
Section 15. That Section 5-31 of the Code of the City of Fort Collins is hereby
amended by the addition of a new subparagraph which reads in its entirety as follows:
Section 50Z4.3 is hereby amended by adding the following:
"502.4.3.1 Design requirements. 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. 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 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.
502.4.3.2 Compliance. 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/ft2 under a pressure differential of 0.3 in. water (1.57 lb/ft2)
(0.02 L/s m2 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) (0.02 L/sm2 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/s m2 under a
pressure differential of 75 Pa) in accordance with ASTM E779 or an
equivalent approved method."
Section 16. That Section 5-31 of the Code of the City of Fort Collins is hereby
amended by the addition of a new subparagraph which reads in its entirety as follows:
Section 505.2.2.1 is hereby amended in its entirety to read as follows:
"505.2.2.1 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 occupants are
not present in the following locations:
1. corriders 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-
up emergency lighting and exit signage."
Section 17. That Section 5-31 of the Code of the City of Fort Collins is hereby amended
by the addition of a new subparagraph which reads in its entirety as follows:
Section 505.2.3 is hereby amended in its entirety by adding the following:
1505.2.3 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.
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505.2:3.1 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."
Section 18. That Section 5-31 of the Code of the City of Fort Collins is hereby amended
by the.addition of a new subparagraph which reads in its entirety as follows:
Section 505.2.4 is hereby amended in its entirety by adding the following:
"505.2.4 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 facades, 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 health or life safety statute, ordinance, or regulation,
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 internally illuminated or have
integral lamps."
Section 19. That Section 5-31 of the Code of the City of Fort Collins is hereby
amended by the addition of a new subparagraph which reads in its entirety as follows:
Section 505.8 is hereby added to read as follows:
"505.8 Electricity distribution design requirements and load type isolation. Electric
distribution systems within, on or adjacent to and serving a building shall be designed in
such fashion that each primary panel supplies only one electricity load type as defined in
Sections 505.8.1 through 505.8.5. 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.
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Exceptions:
I. Buildings with less than 15,000 square feet of floor area 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 505.8.1
through 505.8.5 shall be--permitted to be measured through the use of
installed sub-meters or other equivalent methods as approved.
505.8.1 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.
505.8.2 Lighting system electric load. This category shall include all electricity for
interior and exterior lighting used in occupant spaces and common areas.
505.8.3 Plug loads. This category shall include all electricity use by devices, electric
appliances and equipment connected to convenience receptacle outlets.
505.8.4 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."
505.8.5 Miscellaneous loads. This category shall include all electricity use for all other
building operations and other operational loads."
Section 20. That Section 5-31 of the Code of the City of Fort Collins is hereby
amended by the addition of a new subparagraph which reads in its entirety as follows:
Chapter 6 REFERENCED STANDARDS is hereby amended by adding the following
additional referenced standard in alphabetical sequence:
"Under the heading of ICC:
IgCC PV 2-10 International Green Construction Code®.......609.3"
"RESNET® Residential Energy Services Network, Inc.
P.O. Box 4561
Oceanside, CA 92052-4561
http://resnet.us
RESNET®reference standard Grade I and Grade II Insulation"
Referenced in Amended 09 IECC Section 502.1 General.
Section 21. That all subsections in Section 5-31 of the Code of the City of Fort Collins
are hereby renumbered in sequential order as they appear in the IECC.
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Section 22. That the requirements of Sections 3, 4, 5, 6, 13, and 14 of this Ordinance
will be effective as to all applications for building permits filed on or after the effective date of
this Ordinance.
Section 23. That the requirements of Sections 2, 7 through 12, 15 through 20 of this
Ordinance will be effective as to all applications for building permits filed on or after January 1,
2012.
Introduced, considered favorably on first reading, and olyde ed published this 1 st day of
March, A.D. 2011, and to be presented for final passage on 2 d da March, A.D 11.
- Mayo
TTEST:
City Clerk
Passed and adopted on final reading on the 22nd day of arch, A.D. 2011.
- r
May r
TTEST:-
City Clerk
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