HomeMy Public PortalAbout11-09-2010 Stretch Energy Code Ordinance 78o CMR Appendix 12o AA
Stretch Energy Code
The Stretch Energy Code is the International Energy Conservation Code(IECC)2009 with
amendments contained herein.
CHAPTER 1-ADMINISTRATION
SECTION 1oi -SCOPE AND GENERAL REQUIREMENTS
Remove sections iol.1, 101.2, and 101.3 and replace with:
iom Title.This code shall be known as the Massachusetts Stretch Energy Code and shall be
cited as such. It is referred to herein as "this code."
101.2 Scope.This code applies to residential and commercial buildings. Buildings not
included in this scope shall comply with 780 CMR 13, 34, 61, or 93, as applicable.
101.3 Purpose and Intent.
The purpose of 78o CMR 120.AA is to provide a more energy efficient alternative to the base
energy code applicable to the relevant sections of the building code for both new construction
and existing buildings.A municipality seeking to ensure that construction within its
boundaries is designed and built above the energy efficiency requirements of 78o CMR may
mandate adherence to this appendix.
This appendix may be adopted by any municipality in the commonwealth,by decision of its
governing body. In a city having a Plan D or Plan E charter the governing body shall be the city
manager and the city council, and in any other city the mayor and city council. In towns the
governing body shall be the board of selectmen. In order to be adopted,the appendix must be
considered at an appropriate municipal public hearing, subject to the municipality's existing
public notice provisions. If adopted by a municipality this appendix rather than 78o CMR 13,
34, 61, or 93, as applicable, shall govern.
This appendix shall regulate the design and construction of buildings for the effective use of
energy.This appendix is intended to provide flexibility to permit the use of innovative
approaches and techniques to achieve-the effective use of energy.This appendix is not intended
to abridge safety,health or environmental requirements contained in other applicable codes or
ordinances.
Remove section 101.4.3 Exceptions and replace with:
Exceptions
1. Storm windows installed over existing fenestration.
2. Repairs to an existing sash and frame.
3. Existing ceiling,wall or floor cavities, of the building envelope, exposed or accessible during
construction provided that any empty cavities are filled with insulation that meets or exceeds
an R value of R-3.5/inch.
4. Reroofing or residing over uninsulated roofs or walls where the sheathing is not exposed.
5. 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,
6.Alterations that replace less than 50 percent of the luminaires in a space,provided that such
alterations do not increase the installed interior lighting power.
7. 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.
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Remove section 104.1 and replace with:
104.1 General. Construction or work for which a permit is required shall be subject to
inspection by the code official or approved inspection agencies.
Remove section 104.5 and replace with:
104.5 Approved inspection agencies.The code official is authorized to require or accept
reports of approved inspection agencies,provided such agencies satisfy the requirements as to
qualifications and reliability.
Delete sections io7,1o8 and log
CHAPTER 2 — DEFINITIONS
Insert in section 202:
FENESTRATION PRODUCT, FIELD-FABRICATED is a fenestration product including
an exterior glass door whose frame is made at the construction site of standard dimensional
lumber or other materials that were not previously cut, or otherwise formed with the specific
intention of being used to fabricate a fenestration product or exterior door. Field fabricated
does not include site-built fenestration with a label certificate or products required to have
temporary or permanent labels.
FENESTRATION PRODUCT, SITE-BUILT is fenestration designed to be field-glazed or
field assembled units using specific factory cut or otherwise factory formed framing and glazing
units. Examples of site-built fenestration include storefront systems, curtain walls, and atrium
roof systems.
FURNACE ELECTRICITY RATIO.The ratio of furnace electricity use to total furnace
energy computed as ratio = (3.412*EAE)/(l000*EF + 3.412*EAE), where EAE(average annual
auxiliary electrical consumption) and EF(average annual fuel energy consumption) are defined
in Appendix N to subpart B of part 430 of title ro of the Code of Federal Regulations and EF is
expressed in millions of Btu's per year.
ON-SITE RENEWABLE ENERGY. Includes solar photovoltaic; active solar thermal that
employs collection panels, heat transfer mechanical components and a defined heat storage
system; wind; small hydro; tidal;wave energy; geothermal(core earth);biomass energy
systems; landfill gas and bio-fuel based electrical production. Onsite energy shall be generated
on or adjacent to the project site and shall not be delivered to the project through the utility
service.
CHAPTER 3 — CLIMATE ZONES
Delete section 3oi and replace with:
Climate Zone 5 and moisture regime A(Moist) shall be used in determining the applicable
requirements from Chapters 4 and 5 for locations in Massachusetts.
Delete Chapter 4 and replace with:
CHAPTER 4 —ADVANCED RESIDENTIAL ENERGY EFFICIENCY
401.1 Scope. This chapter applies to residential buildings.
401.2 New construction. New low-rise(three stories or less)residential buildings including
townhouses shall require a HERS (Home Energy Rating System) index rating as verified by a
RESNET(Residential Energy Services Network) certified HERS rater.
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i
• For units equal to or greater than 3,000 sq ft in conditioned floor space, a HERS rating
of 65 or less is required.
• For units Iess than 3,000 sq ft, a HERS rating of 70 or less is required.
• In addition, all new construction shall demonstrate compliance with the Energy Star
Qualified Homes Thermal Bypass Inspection Checklist'.
401.3 Prescriptive option for residential additions.Additions to an existing building,
building system or portion thereof shall conform to the most recent Energy Star for Homes
Prescriptive Builders Option Package(BOP), except for heating and cooling equipment and
appliances, and shall demonstrate compliance with:
• The Energy Star Qualified Homes Thermal Bypass Inspection Checklist.
• Envelope insulation requirements that meet or exceed IECC 2oo9 requirements
(Chapter 4, Section 402) for climate zone 5.
401.4 Performance option for residential additions. The performance approach and
HERS ratings of 401.2 may be followed in lieu of the prescriptive requirements of 401.3
401.5 Prescriptive option for alterations, renovations or repairs.Alterations,
renovations or repairs that involve accessing the building envelope shall require the affected
portion of the envelope to comply with 401.3. Envelope insulation shall meet or exceed IECC
2oo9 requirements (Chapter 4, Section 402)for climate zone 5, or fully fill existing cavities
with insulating material which meets or exceeds an R value of R 3.5/inch.
4oi.6 Performance option for alternations, renovations or repairs. In all cases of
alternations, renovations or repairs the performance approach of 401.2 may be followed in lieu
of the prescriptive requirements of 401.5 with the following HERS rating requirements:
• For units equal to or greater than 2,000 sq ft in conditioned floor space, a HERS rating
of 80 or less is required.
• For units less than 2,000 sq ft, a HERS rating of 85 or less is required.
• Compliance with the Energy Star Qualified Homes Thermal Bypass Inspection
Checklist.
Change Chapter 5 title to:
CHAPTER 5 —ADVANCED COMMERCIAL ENERGY EFFICIENCY
Remove section 5or.r and 501.2 and replace with:
501.1 Scope.The requirements contained in this chapter are applicable to new construction
of commercial buildings, or portions of commercial buildings.
Exceptions:
i. Commercial buildings less than 5,000 sq. ft.
2. Commercial buildings from 5,000 to 40,000 sq, ft,in area with these uses:
• Supermarkets
• Warehouses
• Laboratories
http://www.euergystar.gov/ia/partners/bldrs_lenders_raters/downloads/Thermal_Bypo ss_Inspeetion_Checklist.pdf
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• A building of specialized use by variance to this appendix through appeal to the
P
BBRS.
501.1.1 Buildings greater that 100,000 sq. ft. Buildings greater than loo,000 sq. ft., and
additions to such buildings greater than or equal to 30%of the existing conditioned floor area,
shall be designed to achieve energy use per square foot equal to at least 2o%below the energy
requirements of ASHRAE/IESNAStandard go.1-2oo7,Energy Standard for Buildings Except
for Low-Rise Residential Buildings,Appendix G, measured by industry-accepted energy
modeling.
5ot.i.2 Special energy use buildings. Buildings greater than 40,000 sq. ft. in area, and
additions to such buildings greater than or equal to 30% of the existing conditioned floor area
with these uses:
• Supermarkets
• Warehouses
• Laboratories
shall be designed to comply with the performance requirements of 501.1.1.
501.1.3 Performance option for buildings from 5,000 to ioo,000 sq. ft. Buildings
between 5,000 sq.ft, and ioo,000 sq.ft. shall comply with the performance requirements of
501.1.1, or the prescriptive option 501.1.4.
501.1.4 Prescriptive option for Buildings from 5,000 to ioo,000 sq. ft.The
requirements contained in section 501.1.4.1 and beyond of this chapter are applicable to
buildings from 5,000 to ioo,000 sq.ft. and additions to such buildings greater than or equal to
30% of the existing conditioned floor area where the addition has its own heating system.
501.1.4.1 Application.The commercial building project shall comply with the requirements
in Sections 502 (Building envelope requirements), 503 (Building mechanical systems), 504
(Service water heating), 505 (Electrical power and lighting systems), and 507(Advanced
Prescriptive Options)in its entirety.
Compliance with section 507 requires complying with any ONE of the following prescriptive
options:
a. 507.2.1 Efficient Mechanical Equipment
b. 507.2.2 Reduced Lighting Power Density
c. 507.2.3 On-Site Supply of Renewable Energy
Compliance with section 507 does not remove the requirement to comply with any other
mandatory requirements in this code.
SECTION 502 -BUILDING ENVELOPE REQUIREMENTS
Delete front section 502.1.1, the last sentence:
Buildings with a vertical fenestration area or skylight area that exceeds that allowed in Table
502.3 shall comply with the building envelope provisions of ASHRAE/IESNA9o.i.
Remove Table 5021.2, Table 502.2(1)and Table 502.2(2)and replace with:
TABLE 502.1.2 - BUILDING ENVELOPE REQUIREMENTS OPAQUE ELEMENT,
MAXIMUM U-FACTORS
Roofs All Other Group R
Insulation entirely above deck U-0.039 U- 0.039
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Metal buildings(with R-5 U- 0.049 U-0.049
thermal blocks)
Attic and other U- 0.027 U- 0.027 j
Walls,Above Grade
Mass, exterior insulation U-0.08o U- 0.071 j
Mass, interior insulation U-0.085 U-0.085
Metal building U-o.o61 U- o.o61 j
Metal framed U-0.064 U- 0.057
Wood framed and other U- 0.051 U- 0.051 j
Walls, Below Gradea
Mass, exterior insulation C-0.119 C-0.119
Mass,interior insulation C- 0.063 C- 0.063
Floors
Mass U- 0.074 U- 0.064 j
Metal Joist U-0.033 U-0.033
Wood Joist/Framing U- 0.033 U-0.033 j
Slab-on-Grade Floors
Unheated slabs F-0.540 F- 0,520
Heated slabs F- 0.58o F-0.58o j
Opaque Doors
Swinging U- 0.37 U- 0.37
Roll-up or sliding U- 0.50 U-0.50
For SI:1 inch=25.4 mm.
ci—Continuous Insulation
a.When heated slabs are placed below grade,below grade walls must meet the F-factor requirements for
perimeter insulation according to the heated slab-on-grade construction.
TABLE 502.2
BUILDING ENVELOPE REQUIREMENTS -OPAQUE ASSEMBLIES
Note: IECC 2009
Roofs All Other Group R equivalent
Insulation entirely above R-25 ci R-25 ci Zone 7
deck
Metal buildings(with R-5 R-13 +R-19 R-19 +R-to Zone 7
thermal blocks a,b)
Attic and other R-38 R-38 Zone 2-7 I
Walls,Above Grade I
Mass,exterior insulation R-ll.4 ci R-13.3 ci I Zone 5
Mass,interior insulation R-13 I R-13 N/A
Metal building° I R-13 + R-5.6 ci I R-13 +R-5.6 ci I Zone 5-6 I
Metal framed R-13 +R-7.5 ci I R-13 +R-7.5 ci Zone 5-6 I
Wood framed and other I R-13 +R-7.5 I R-13 +R-7.5 Zone 6 I
Walls, Below Graded I
Mass,exterior insulation I R-7 5 ci I R-7.5 ci I Zone 5-6 I
I Mass,interior insulation I R-19 I R-19 I N/A
Floors I ( I
Mass R-lo ci I R-12.5 ci I Zone 5 I
I Metal Joist R-3o R-30 Zone4-8
I Wood Joist/Framing R-3o R-30 Zone 4-8 I
Slab-on-Grade Floors I I
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Unheated slabs R-10 for 24 in. R-15 for 24 in. Zone 6
below below
Heated slabs R-i5 for 36 in. + R-15 for 36 in. + NBI Core Performance
R-5 ci below R-5 ci below Values
Opaque Doors
Swinging U—0.37 U—0.37
Roll-up or sliding R—4.75 R—4.75
For SI: i inch=25.4 Turn.
ci—Continuous Insulation
NR—No Requirement
a.Thermal blocks are a minimum R-5 of rigid insulation,which extends i-inch beyond the width of the purlin on
each side,perpendicular to the purlin.
b.The first R-value is for faced fiberglass insulation batts draped over purlins.The second R-value is for unfaced
fiberglass insulation batts installed parallel to the purlins.A minimum R-3.5 thermal spacer block is placed above
the purlin/batt,and the roof deck is secured to the purlins. Reference:ASHRAE/IESNA go.r Table A2.3 including
Addendum"G"
c.The first R-value is for faced fiberglass insulation batts installed perpendicular and compressed between the
metal wall panels and the steel framing. the second rated R-value of insulation is for insulation installed from the
inside,covering the girts.Reference:ASHRAE/IESNA go.i Table A3.2 Appendix"G"
d.When heated slabs are placed below grade,below grade walls must meet the exterior insulation requirements
for perimeter insulation according to the heated slab-on-grade construction.
Remove section go2.3.2(including Table 502.3)and replace with:
502.3.2 Maximum U-factor and SHGC. For vertical fenestration,the maximum U-factor
and solar heat gain coefficient(SHGC) shall be as specified in Table 502.3,which is uniformly
set at 0.40. For skylights,the limit is set at 3% of roof area,but can be expanded to 5% of roof
area in conjunction with automatic daylighting controls. In all cases, the maximum U-factor
and solar heat gain coefficient(SHGC) shall be as specified in Table 502.3.
TABLE 502.3
BUILDING ENVELOPE REQUIREMENTS: FENESTRATION
I All
Framing materials other than metal with or
without metal reinforcement or cladding
U-Factor 1 0.35
Metal framing with or without thermal break I
Curtain Wall/Storefront
U-Factor I 0.42
Entrance Door U-Factor I 0.80
I All Other U-Factor a 0.45
SHGC-All Frame Types
SHGC 0.40
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Skylights (3% maximum,or 5%maximum with
automatic daylighting controls v)
U-Factor 0.4.5 �
SHGC 0.40
a. All other includes operable windows,fixed windows and doors other than entrance doors.
b. Automatic daylighting controls shall meet the requirements of Section 505.2.2.1.3
502.4 Air leakage (Mandatory).
Remove section 502.4.1 and 502.4.2 and replace with:
502.4.o Air Barriers.The building envelope shall be designed and constructed with a
continuous air barrier to control air leakage into, or out of the conditioned space. An air
barrier system shall also be provided for interior separations between conditioned space
and space designed to maintain temperature or humidity levels which differ from those
in the conditioned space by more than 50%of the difference between the conditioned
space and design ambient conditions.
The air barrier shall have the following characteristics:
1. It must be continuous,with all joints made airtight.
2. Materials used for the air barrier system shall have an air permeability not to exceed
0.004 cfm/ftz under a pressure differential of 0.3 in.water(r.57psf) (75 Pa)when tested
in accordance with ASTM E 2178. Air barrier materials shall be taped or sealed in
accordance with the manufacturer's instructions.
3. It shall be capable of withstanding positive and negative combined design wind,fan
and stack pressures on the envelope without damage or displacement, and shall transfer
the load to the structure. It shall not displace adjacent materials under full load.
4.Air barrier materials shall be maintainable, or, if inaccessible,shall meet the
durability requirements for the service life of the envelope assembly.
5. The air barrier material of an envelope assembly shall be joined and sealed in a
flexible manner to the air barrier material of adjacent assemblies, allowing for the
relative movement of assemblies due to thermal and moisture variations and creep.
Connections shall be made between:
a.joints around fenestration and door frames
b,junctions between walls and foundations,between walls at building
corners,between walls and structural floors or roofs, and between walls
and roof or wall panels
c, openings at penetrations of utility services through roofs, walls, and
floors
d. site-built fenestration and doors
e.building assemblies used as ducts or plenums
f,joints, seams, and penetrations of vapor retarders
g, all other openings in the building envelope
502.4.o.r Air Barrier Penetrations. All penetrations of the air barrier and paths of
air infiltration/exfiltration shall be made air tight.
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502.4.1 Window and door assemblies.The air leakage of window,skylight and
door assemblies that are part of the building envelope shall be determined in accordance
with AAMA/WDMA/CSA 101/I.S.2/A440, or NFRC 40o by an accredited, independent
laboratory, and labeled and certified by the manufacturer.Window and skylight air
leakage shall not exceed o.2 cfm/ft2 at 1.57 pounds per square foot(psf) (75Pa), or 0.3
cfm/ft2 at 6.24 psf(300 Pa). Door assembly air leakage shall not exceed 0.3 cfm/ft2 for
all other products at 1.57 psf (75Pa).
Exceptions:
a. Site-constructed windows and doors that are sealed in accordance with Section
502.4.8.
b. Commercial entrance doors covered by section 502.4
c. Garage doors shall be permitted to use air leakage determined by test at
standard test conditions in accordance with ANSI/DASMA 105.
d. Doors and Access Openings to Shafts, Chutes, Stairwells, and Elevator Lobbies.
These doors and access openings shall either meet the requirements of 502.4.3 or
shall be equipped with weather seals, except weatherseals on elevator lobby doors
are not required when a smoke control system is installed.
502.4.2 Curtain wall,storefront glazing and commercial entrance doors.
Curtain wall,storefront glazing and commercial-glazed swinging entrance doors and
revolving doors shall be tested for air leakage at a pressure of at least 1.57 pounds per
square foot(psf) (75 Pa) in accordance with ASTM E 283. For curtain walls and
storefront glazing, the maximum air leakage rate shall be o.06 cubic foot per minute per
square foot(cfm/ft2) (1a m3/h x m2) of fenestration area. For commercial glazed
swinging entrance doors and revolving doors,the maximum air leakage rate shall be
i.00 cfnr/ft2(18.3 m3/h x m2) of door area when tested in accordance withASTM E 283.
Remove section 502.4.5 and replace with:
502.4.5 Outdoor air intakes and exhaust openings. Stair and elevator shaft vents
and other outdoor air intakes and exhaust openings integral to the building envelope
shall be equipped with not less than a Class I motorized, leakage-rated damper with a
maximum leakage rate of 4 cfm per square foot(6.8 L/s • C m2) at r.o inch water gauge
(w.g.) (1250 Pa)when tested in accordance with AMCA SooD. These air tight, operable
dampers shall be installed when the air barrier is penetrated by:
1. Fixed open louvers such as in elevator shafts and machine rooms.
2. Mechanical system components which allow infiltration or exfiitration of air
When the systems are inactive,such as atrium smoke exhaust systems, elevator
shaft smoke relief openings, and other similar elements.
Such dampers shall be set in the closed position and automatically open upon:
1.the activation of any fire alarm initiating device of the building's fire alarm
system;
2.the interruption of power to the damper.
Exception: Gravity(nonmotorized)dampers are permitted to be used in
buildings less than three stories in height above grade.
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Remove section 502.4.7 and replace with:
502.4.7 Vestibules. Building entrances that separate conditioned space from the
exterior shall be protected with an enclosed vestibule,with all doors opening into and
out of the vestibule equipped with self-closing devices.Vestibules shall be designed so
that in passing through the vestibule it is not necessary for the interior and exterior
doors to open at the same time. Interior and exterior doors shall have a minimum
distance between them of not less than 7 ft when in the closed position.The exterior
envelope of conditioned vestibules shall comply with the requirements for a conditioned
space. The interior and exterior envelope of unconditioned vestibules shall comply with
the requirements for a semi-heated space.
Exceptions:
a.Building entrances with revolving doors,
b.Doors not intended to be used as a building entrance.
c,Doors opening directly from a dwelling unit.
d.Doors that open directly from a space that is less than 3000 ft2 in area and is
separate from the building entrance.
e.Doors used primarily to facilitate vehicular movement or material handling
and adjacent personnel doors.
Add section 502.5 vapor retarders.
502.5 Vapor retarders. Class I or II vapor retarders are required on the interior side
of walls.
Exceptions:
i. Basement walls.
2. Below grade portion of any wall.
3. Construction where moisture or its freezing will not damage the materials.
502.5.1 Class III Vapor retarders. Class III vapor retarders shall be permitted
where any one of the conditions in Table 502.5.1 are met.
TABLE 502.5.1-CLASS III VAPOR RETARDERS
Climate Zone I Class III vapor retarders permitted for:
Vented cladding over OSB
5 Vented cladding over Plywood
Vented cladding over Fiberboard
Vented cladding over Gypsum
Insulated sheathing with R-value >=R5 over 2x4 wall
Insulated sheathing with R-value>= R7.5 over 2x6 wall
502.5.2 Material vapor retarder class. The vapor retarder class shall be based on
the manufacturer's certified testing or a tested assembly. The following shall be deemed
to meet the class specified:
Class 1: Sheet polyethylene, non-perforated aluminum foil
Class 11: Kraft faced fiberglass batts or low perm paint
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(paint with o.1 < perm <= 1.o)
Class III: Latex or enamel paint
SECTION 503 - BUILDING MECHANICAL SYSTEMS
Insert at end of section 5o3a:
NOTE: Compliance path a. (Efficient Mechanical Equipment)in section 507 is
not available for equipment installed according to the minimum performance
values outlined in section 503.2.3. In this case, compliance can be met with one
of the following paths:
b. 507.2.2 Reduced Lighting Power Density
c. 507.2,3 On-Site Supply of Renewable Energy
Replace section 503.2.1 with:
503.2.1 Calculation of heating and cooling loads. Design loads shall be
determined in accordance with the procedures described in the ASHRAE/ACCA
Standard 183.The design loads shall include an accurate representation of the building
envelope,lighting,ventilation and occupancy loads based on the specific design
characteristics of the project. Heating and cooling loads shall be adjusted to account for
load reductions that are achieved when energy recovery systems are utilized in the
HVAC system in accordance with the ASHRAE HVACSystems and Equipment
Handbook.Alternatively,design loads shall be determined by an approved equivalent
computation procedure, using the design parameters specified in IECC 2009 Chapter 3.
Insert at end of section 503.2.5.1,Exceptions:
5. Building spaces where CO,Sensors are inappropriate measures for ventilation
needs because of ventilation needs other than occupant requirements.
6. Building spaces where the primary ventilation needs are for process loads.
Replace sections 503.2.9 —503.2.9.3 with:
503.2.9 Mechanical systems commissioning and completion requirements.
503.2.9.1 System commissioning. Commissioning is a process that verifies and
documents that the selected building systems have been designed,installed, and
function according to the owner's project requirements and construction documents.
Drawing notes shall require commissioning and completion requirements in accordance
with this section. Drawing notes may refer to specifications for further requirements.
Copies of all documentation shall be given to the owner.The building official may
request commissioning documentation for review purposes. At the time of plan
submittal,the building jurisdiction shall be provided,by the submittal authority, a letter
of intent to commission the building in accordance with this code.
503.2.9.1.1 Commissioning plan.A commissioning plan shall include as a
minimum the following items:
i.A detailed explanation of the original owner's project requirements,
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2.A narrative describing the activities that will be accomplished during each
phase of commissioning, including guidance on who accomplishes the activities
and how they are completed,
3. Equipment and systems to be tested,including the extent of tests,
4. Functions to be tested(for example calibration, economizer control, etc.),
5. Conditions under which the test shall be performed(for example winter and
summer design conditions, full outside air, etc.), and
6. Measurable criteria for acceptable performance.
503.2.9.1.2 Systems adjusting and balancing.All HVAC systems shall be
balanced in accordance with generally accepted engineering standards.Air and water
flow rates shall be measured and adjusted to deliver final flow rates within io% of
design rates. Test and balance activities shall include as a minimum the following items:
I. Air systems balancing. Each supply air outlet and zone terminal device
shall be equipped with means for air balancing in accordance with the
requirements of Chapter 6 of the International Mechanical Code. Discharge
dampers are prohibited on constant volume fans and variable volume fans with
motors 10 hp (18.6 kW) and larger.Air systems shall be balanced in a manner to
first minimize throttling losses then,for fans with system power of greater than 1
hp,fan speed shall be adjusted to meet design flow conditions.
Exception: Fans with fan motors of 1 hp or less.
2. Hydronic systems balancing: Individual hydronic heating and cooling
coils shall be equipped with means for balancing and pressure test connections.
Hydronic systems shall be proportionately balanced in a manner to first
minimize throttling losses,then the pump impeller shall be trimmed or pump
speed shall be adjusted to meet design flow conditions. Each hydronic system
shall have either the ability to measure pressure across the pump, or test ports at
each side of each pump.
Exceptions:
1. Pumps with pump motors of 5 hp or less.
2. When throttling results in no greater than 5% of the nameplate horsepower
draw above that required if the impeller were trimmed.
503.2.9.1.3 Functional performance testing
503.2.9.1.3.1 Equipment functional performance testing. Equipment functional
performance testing shall demonstrate the correct installation and operation of
components, systems, and system-to-system interfacing relationships in accordance
with approved plans and specifications.This demonstration is to prove the operation,
function, and maintenance serviceability for each of the Commissioned systems.Testing
shall include all modes of operation, including:
1.All modes as described in the Sequence of Operation,
2. Redundant or automatic back-up mode,
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3. Performance of alarms, and
4. Mode of operation upon a loss of power and restored power.
Exception: Unitary or packaged HVAC equipment listed in Tables 503.2.3 (1)
through(3)that do not require supply air economizers.
503.2.9.1.3.2 Controls functional performance testing. HVAC control systems
shall be tested to document that control devices,components, equipment, and systems
are calibrated, adjusted and operate in accordance with approved plans and
specifications. Sequences of operation shall be functionally tested to document they
operate in accordance with approved plans and specifications.
503.2.9.1.4 Preliminary commissioning report.A preliminary report of
commissioning test procedures and results shall be completed and provided to the
Owner. The report shall be identified as "Preliminary Commissioning Report" and shall
identify:
1. Itemization of deficiencies found during testing required by this section which
have not been corrected at the time of report preparation and the anticipated date
of correction.
2. Deferred tests which cannot be performed at the time of report preparation
due to climatic conditions.
3. Climatic conditions required for performance of the deferred tests, and the
anticipated date of each deferred test.
503.2.9.2 Acceptance. Buildings, or portions thereof, required by this code to comply
with this section shall not be issued a certificate of occupancy until such time that the
building official has received a letter of transmittal from the building owner that states
they have received the Preliminary Commissioning Report as required by Section
503.2.9.1.4.At the request of the building official, a copy of the Preliminary
Commissioning Report shall be made available for review.
503.2.9.3 Completion requirements. The construction documents shall require
that within 90 days after the date of certificate of occupancy,the documents described
in this section be provided to the building owner.
503.2.9.3.1 Drawings. Construction documents shall include as a minimum the
location and performance data on each piece of equipment.
503.2.9.3.2 Manuals.Ali operating manual and a maintenance manual shall be in
accordance with industry-accepted standards and shall include, at a minimum, the
following:
i. Submittal data stating equipment size and selected options for each piece of
equipment requiring maintenance.
2.Manufacturer's operation manuals and maintenance manuals for each piece of
equipment requiring maintenance, except equipment not furnished as part of the
project. Required routine maintenance actions shall be clearly identified.
3.Names and addresses of at least one service agency.
12 Page
4. HVAC controls system maintenance and calibration information, including
wiring diagrams, schematics, and control sequence descriptions. Desired or field-
determined setpoints shall be permanently recorded on control drawings at
control devices or,for digital control systems, in programming comments.
5.A complete narrative of how each system is intended to operate,including
suggested setpoints.
503.2.9.3.3 System balancing report.A written report describing the activities and
measurements completed in accordance with Section 503.2.9.1.2
503.2.9.3.4 Final Commissioning Report. A complete report of test procedures
and results identified as "Final Commissioning Report"shall include:
1. Results of all Functional Performance Tests.
2. Disposition of all deficiencies found during testing,including details of
corrective measures used or proposed.
3.All Functional Performance Test procedures used during the commissioning
process including measurable criteria for test acceptance,provided herein for
repeatability.
Exception: Deferred tests which cannot be performed at the time of report
preparation due to climatic conditions.
SECTION 505 - ELECTRICAL POWER AND LIGHTING SYSTEMS
(Mandatory)
Replace sections 505.2.2.1 and 505.2.2.2 with:
505.2.2.1 Automatic lighting controls.All commercial buildings shall be equipped
with automatic control devices to shut off lighting in compliance with one of the
following automatic control technologies:
1. Section 505.2.2.1.1 Occupancy Sensors
2. Section 505.2.2.1.2 Time Clock Controls
3. Section 505.2.2.1.3 Automatic Daylighting Controls
505.2.2.1.1 Occupancy sensors Occupancy sensors must be installed in all
classrooms, conference/meeting rooms, employee lunch and break rooms,private
offices, restrooms, storage rooms and janitorial closets, and other spaces 300 sf. or less
enclosed by ceiling height partitions. These automatic control devices shall be installed
to automatically turn off lights within 30 minutes of all occupants leaving the space,
except spaces with multi-scene control.
505.2.2.1.2 Time Clock Controls In areas not controlled by occupancy sensors,
automatic time switch control devices shall be used. It shall incorporate an override
switching device that:
i.Is readily accessible.
2.Is located so that a person using the device can see the lights or the area
controlled by that switch, or so that the area being lit is annunciated.
3. Is manually operated.
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4.Allows the lighting to remain on for no more than 4 hours when an override is
initiated.
5. Controls an area not exceeding 5,000 square feet(465 m2).
Exceptions:
i. In malls and arcades, auditoriums, single-tenant retail spaces, industrial
facilities and arenas, where captive-key override is utilized,override time may
exceed 2 hours.
2. In malls and arcades, auditoriums,single-tenant retail spaces, industrial
facilities and arenas,the area controlled may not exceed 20,000 square feet
(186o m2).
505.2.2.1.3 Automatic daylighting controls.Automatic controls installed in day lit
zones must control lights in the day lit areas separately from the non-day lit areas.
Controls for calibration adjustments to the lighting control device shall be readily
accessible to authorized personnel. Each daylight control zone shall not exceed 2,500
square feet. Automatic daylighting controls must incorporate an automatic shut-off
ability based on time or occupancy in addition to lighting power reduction controls.
Controls will automatically reduce lighting power in response to available daylight by
either one of the following methods:
: . Continuous dimming using dimming ballasts and daylight-sensing
automatic controls that are capable of reducing the power of general lighting in
the day lit zone continuously to less than 35% of rated power at maximum light
output.
2. Stepped Dimming using multi-level switching and daylight-sensing controls
that are capable of reducing lighting power automatically. The system should
provide at least two control channels per zone and be installed in a manner such
that at least one control step shall reduce power of general lighting in the daylit
zone by 30%to 50% of rated power and another control step that reduces lighting
power by 65%to 100%. Stepped dimming control is not appropriate in
continuously occupied areas with ceiling heights of 14 feet or lower
Exception: Daylight spaces enclosed by walls or ceiling height partitions and
containing 2 or fewer luminaire are not required to have a separate switch for
general area lighting.
Retain section 505.2.2.3 Daylightzone conh•ol.
Replace section 505.2.3 with:
505.2.3 Additional Controls for specific uses
a. Display/Accent Lighting—display or accent lighting shall have a separate control
device.
b. Case Lighting—lighting in cases used for display purposes shall have a separate
control device.
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i
c. Hotel and Motel Guest Room Lighting—hotel and motel guest rooms and guest
suites shall have a master control device at the main room entry that controls all
permanently installed luminaires and switched receptacles.
d. Task Lighting—supplemental task lighting,including permanently installed
undershelf or undercabinet lighting, shall have a control device integral to the
luminaires or be controlled by a wall-mounted control device provided the control
device is readily accessible and located so that the occupant can see the controlled
lighting. -
e. Nonvisual Lighting—lighting for nonvisual applications, such as plant growth and
food warming, shall have a separate control device.
f. Demonstration Lighting—lighting equipment that is for sale or for demonstrations in
lighting education shall have a separate control device.
Exceptions: a.,b. and d.Where LED lighting is used no additional control is
required.
Insert at end of section 505.5.2:
NOTE: Compliance path b. (Reduced Lighting Power Density) in section 507 is not
available for lighting installed according to the values in table 505.5.2. In this case,
compliance can be met with one of the following paths:
a. 507.2,1 Efficient Mechanical Equipment
c.507.2.3 On-Site Supply of Renewable Energy
Replace, but retain notes and exception, Table 505.5.2 with:
TABLE,505.5.2- INTERIOR LIGHTING POWER ALLOWANCES
LIGHTING POWER DENSITY
Whole
Building Space by Space
Building Area Typea
Active Storage I 0.8 I
I Atrium—First Three Floors I o.6
Atrium—Each Additional Floor I ( 0.2
I Classroom/lecture/training I I 1.3
Conference/Meeting/Multipurpose I I 1.3
Corridor/Transition I o.b
Dressing/Locker/Fitting Room I o.6
I Electrical/Mechanical I 1.5
Food Preparation 1.2
Inactive Storage I 0.3
Laboratory 1.4 I
I Lobby I 1.1
Restroom I o.8 I
I Stairway I I o.6
Automotive Facility I 0.9 I
Automotive—Service Repair I 0.7 I
Convention Center 1.2 I
Exhibit Space I 1.3 I
Audience/Seating Area 0.9 I
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i
I Courthouse 1.2
Audience/Seating Area 0.9
Courtroom 1.9 j
Confinement Cells 0.9
Judges Chambers 1.3
Dining: Bar Lounge/Leisure 1.3
Lounge/Leisure Dining 1.4 1
Dining: Cafeteria/Fast Food 1.4 1
Dining: Family 1.6 1
Dining 1.4
Kitchen 1.2
Dormitory 1.0 1
Living Quarters 1.1
Bedroom 0.5
Study Hall 1.4
Exercise Center 1.0
Dressing/Locker/Fitting Room o.6 j
Audience/Seating Area 0.3
I Exercise Area 0.9
Exercise Area/Gymnasium 1.4
Gymnasium 1.1
Dressing/Locker/Fitting Room o.6
Audience/Seating Area 0.4
Playing Area 1.4
Exercise Area 0.9
Healthcare Clinic 1.0
Corridors w/patient waiting,exam 1.0
Exam/Treatment 1.5
Emergency 2.7 1
Public&Staff Lounge 0•8
I Hospital/Medical supplies 1.4 1
Hospital-Nursery o.6
I Nurse station 1.0 1
Physical therapy 0.9
Patient Room 0.7
Pharmacy 1.2
I Hospital/Radiology 0.4
Operating Room 2.2
I Recovery 0•8
Active storage 0.9
Laundry-Washing o.6
Hospital 1.2
Hotel 1.0 I I
Dining Area 1.3
Guest quarters 1.1
Reception/Waiting 2.5 I
Lobby 1.1 I
I Library 1.3
Library-Audio Visual 0.7
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I Stacks 1
7 1
Card File&Cataloguing 1.1 j
Reading Area 1.2
Manufacturing Facility 1.3 j
I Low bay(< 25 ft Floor to Ceiling Height) 1 I 1.2
I High bay(>25 ft Floor to Ceiling Height) 1 1.7
I Detailed Manufacturing 1 2.1 I
Equipment Room 1.2
Control Room I I 0.5
Motel I 1 0 1 I
Dining Area 1.2
I Guest quarters 1.1
Reception/Waiting_ 1 I 2.1
1 Motion Picture Theater 1.2 I
Audience/Seating Area I 1.2 '
Lobby I 1.0 I
I Multi-Family 0.7 1
I Museum j 1.1
I Active Storage o,8
I General exhibition I 1.0 1
Restoration 1.7 I
Bank/Office-banking activity area I 1.5 1
1 Office 0.9
I Enclosed I 1.0
Open Plan I 1.0
Parking Garage ( 0.3 j
i Penitentiary 1.0
I Performing ArtsTlleater 1 1.6
Audience/Seating Area 1 2.6 1
I Lobby I 3.3 I
I Dressing/Locker/Fitting Room 1.1
I Police Stations I 1.0 I I
I Fire Stations I 0.8 I I
Fire Station Engine Room I 0.8
I Sleeping Quarters I I 0.3 I
Audience/Seating Area I I 0.8 I
1 Police Station Laboratory I I 1.4 I
I Post Office 1a I I
I Sorting Area j 1.2
I Lobby I 1.0 I
Religious Buildings 1 1.3
Lobby 1 1.7 I
Worship/Pulpit/Choir 1 I 2.4 I
1 Retails I 1.3 I
1 Department Store Sales Area I I 1.3 I
I Specialty Store Sales Area I 1.8
Fine Merchandise Sales Area I I 2.9
1 Supermarket Sales Area 1 I 1.3 I
I Personal Services Sales Area I 1.3 f
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Mass Merchandising Sales Area 1.3
Mall Concourse 1.7 I
School/University 1.2 1
Classroom 1.3 I
Audience 0.7 1
I Dining 1.1
I office 1.1
I Corridor 0.5
I Storage 0.5
I Laboratory 1.1 I
Sports Arena 1.1 I
Ring Sports Arena 2.7
Court Sports Arena 2.3
Indoor Playing Field Arena 1.4 1
I Town Hall 1.1
Transportation 1.0 2.1
I Dining Area 1.0
1
Baggage Area 1.0 1
Airport-Concourse o.6 1
Terminal-Ticket Counter 1.5 1
Reception/Waiting 0 5 1
I Warehouse 0.8 1
Fine Material 1.4 1
Medium/Bulky Material 0.9
Workshop 1.4
Replace section 5o6 with:
SECTION 5o6 —TOTAL BUILDING PERFORMANCE
As referenced in section 5o1.1,buildings establishing compliance with this appendix
through total building performance shall be designed to achieve energy use per square
foot equal to at least 2o%below the energy requirements of ASHRAE/IESNA Standard
90.1-2oo7,Energy Standard for Buildings Except for Low-Rise Residential Buildings,
Appendix G, measured by industry-accepted energy modeling.
Add Section Soy:
SECTION 507-ALTERNATIVE PRESCRIPTIVE COMPLIANCE PACKAGES
507A Requirements. Buildings complying with the prescriptive option of section
501.4.1 shall meet the requirements of any one of the following sections:
a. 507.2.1 Efficient Mechanical Equipment
b. 507.2.2 Reduced Lighting Power Density
c. 507.2.3 On-Site Supply of Renewable Energy
507.2.1 Efficient Mechanical Equipment
This mechanical alternative compliance option is intended to allow the builder to meet
the requirements of section 507 by choosing to install efficient mechanical equipment.
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This section does not replace the requirements in section 503, but is one of several
optional compliance packages.
Mechanical equipment choices that fulfill requirements for section 507.2.1 shall comply
with the following:
a. Package unitary equipment shall meet the minimum efficiency requirements in
Tables 507.2.1(1) and 507.2.1(2)
b. Package Terminal Air Conditioners and Heat Pumps shall meet the minimum
efficiency requirements in Table 507.2.1(3)
c. Warm air furnaces and combination warm air furnaces / air conditioning units
shall meet the minimum efficiency requirements in Table 507.2.1(4)
d. Boilers shall meet the minimum efficiency requirements in Table 507.2.1(5)
e. Electric chillers shall meet the energy efficiency requirements in Table
507.2.1(6)
f. Absorption chillers shall meet the minimum efficiency requirements in Table
507.2.1(7)
TABLE 507.2.1(1)
UNITARY AIR CONDITIONERS AND CONDENSING UNITS,
ELECTRICALLY OPERATED,EFFICIENCY REQUIREMENTS
Subcategory Or Minimum
Equipment Type Size Category I Rating Condition Efficiencya
Split system 15.0 SEER
< 65,00o Btu/h 12.5 EER
Single package r5.o SEER
12.0 EER
z 65,00o Btu/h and Split system and 11.5 EERb
Air conditioners, < 135,00o Btu/h single package 1 11.9IPLVb
Air cooled >_ 135,00o Btu/h and Split system and 11.5 EERb
< 240,00o Btu/h single package I 11.9IPLVb
>_ 240,00o Btu/h and< Split system and 10.5 EERb
760,00o Btu/h single package ro.9 IPLVb
z 760,00o Btu/h I 9.7 EERb
11.o IPLVb
Air conditioners, I Water and Split system and 14.0 EER evapor•atively cooled single package
For SI:1 British thermal unit per hour=0.2931 W.
a,IPLVs are only applicable to equipment with capacity modulation.
b. Deduct 0.2 from the required EERs and IPLVs for units with a heating section other than electric
resistance heat.
191Page
TABLE 507.2.1(2)
UNITARY AND APPLIED HEAT PUMPS, ELECTRICALLY
OPERATED, EFFICIENCY REQUIREMENTS
Equipment Size Category Subcategory Or Minimum
Type Rating Condition Efficiencya
Split system 15.0 SEER
< 65,00o Btu/h 12.5 EER
Single package 15.0 SEER
12.o EER
Air cooled Z 65,00o Btu/h and Split system and 11.5 EERb
(Cooling mode) < 135,00o Btu/h single package 11.9 IPLW
>_135,00o Btu/h and Split system and 11.5 EERb
< 240,000 Btu/h single package mg IPLW I
>_ 240,00o Btu/h Split system and 10.5 EERb I
single package ro.9 IPLW
Water source(Cooling mode) < 135,00o Btu/h ii 850F entering water 14.o HER 1
< 65,00o Btu/h Split system 8.5 HSPF
(Cooling capacity) Single package 8.o HSPF
>_ 65,00o Btu/h and 470F db/43°F wb 3.4 COP
Air cooled < 135,00o Btu outdoor air
(Cooling 77aF db/15°F wb 2.4 COP
(Heating mode) capacity) outdoor air
47°F db/43°F wb 3.1 COP
>_ i35,000 Btu/h outdoor air
(Cooling capacity) 77°F db/15°F wb 2.1 COP
outdoor air
Water source < 135,00o Btu/h 70 oF entering water 4.6 COP
(Heating mode) (Cooling capacity)
For SI: °C=[(°F)-32]/1.8,1 British thermal unit per hour=0.2931 W.
db=dry-bulb temperature,OF;wb=wet-bulb temperature,OF
a.IPLVs and Part load rating conditions are only applicable to equipment with capacity modulation.
b. Deduct o.2 from the required EERs and IPLVs for units with a heating section other than electric
resistance heat.
TABLE 507.2.1(3)
PACKAGED TERMINAL AIR CONDITIONERS AND
PACKAGED TERMINALHEAT PUMPS
Minimum
Equipment Type Size Category Efficiency
Air conditioners <7,00o Btu /h 11.9 EER 1
&Heat Pumps 7,00o Btu/h and< io,000 Btu/h 11.3 HER
(Cooling Mode) io,000 Btu/h and < 13,00o Btu/h 10.7 HER I
> 13,00o Btu/h 9.5 HER 1
a. Replacement units must be factory labeled as follows: "MANUFACTURED FOR REPLACEMENT
APPLICATIONS ONLY: NOT TO BE INSTALLED IN NEW CONSTRUCTION PROJECTS."Replacement
efficiencies apply only to units with existing sleeves less than 16 inches (406 mm)high and less than 42
inches(ro67 mm)wide.
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TABLE 507.2.1(4)
WARM AIR FURNACES AND COMBINATION WARM AIR FURNACES/AIR-
CONDITIONING UNITS,WARM AIR DUCT FURNACES AND UNIT
HEATERS, EFFICIENCY REQUIREMENTS
Subcategory
Size Category Or Rating Minimum
Equipment Type (Input) Condition Efficiency Test Procedure
< 225,00o Btu/h
9o%AFUE I DOE 10 CFR Part
Warm air furnaces, or 90%Et 430 or ANSI
gas fired o Z21.47
Maximum 9o%Ec,
>_ 225,00o Btu/h capacity note r. ANSI Z21.47
85%AFUE DOE io CFR Part
Warm air furnaces, < 225,00o Btu/h or 85%Et 430
oil fired or UL727
Maximum 85 %Et,
>_ 225,000 Btu/h capacity note r. I UL 727
Warm air duct Maximum
furnaces,gas fired All capacities capacity. 90%Ec I ANSI Z83.8
Warm air unit heaters, All capacities MaximumI 90%Ec ANSI Z83.8
gas fired capacity
Warm air unit Maximum
heaters, All capacities 90%Ec UL731
oil fired capacity
For SI: 1 British thermal unit per hour=0.2931 N.
1.Units must also include an IID(intermittent ignition device),have jackets not exceeding o.75 percent of
the input rating,and have either power venting or a flue damper.A vent damper is an acceptable
alternative to a flue damper for those furnaces where combustion air is drawn from the conditioned space.
Where there are hvo ratings,units not covered by the National Appliance Energy Conservation Act of 1987
(NAECA)(3-phase power or cooling capacity greater than or equal to 65,0oo Btu/h[19 kW]shall comply
with either rating.
Et=Thermal efficiency
Ec=Combustion efficiency(t00%less flue losses)
Efficient furnace fan: All fossil fuel furnaces in zones 3 to 8 shall have a furnace electricity ratio not
greater than 2%and shall include a manufacturer's designation of the furnace electricity ratio.
TABLE 507.2.1(5)
BOILER, EFFICIENCY REQUIREMENTS
I Equipment Type Size Category I Minimum Efficiency I
< 30o,000 Btu/h 9o%Et
Gas Hot Water > 3oo,000 Btu/h and < 89%Et
2,5 mBtufh
Gas Steam I <3oo,000 Btu/h 89%Et I
> 300,00o Btu/h 89%Et
Oil I <3oo,000 Btu/Ir 9o%Et
I >3oo,000Btu/h 89%Et
I Et=thermal efficiency
211 Page
TABLE 507.2.1(5)
CHILLERS-EFFICIENCY REQUIREMENTS
Optional Compliance Path
Required Efficiency- -Required Efficiency-
Chillers Chillers With VSD
Equipment Size Full Load IPLV Full Load IPLV
Type Category (KW/Ton) (KW/Ton) (KW/Ton) (KW/Ton)
Air Cooled w/ All 1.2 1.0 I N/A N/A
Condenser
Air Cooled
w/o All 1.08 1.08 N/A N/A
Condenser
Water Cooled, All 0.840 0.63o N/A N/A
Reciprocating
< 90 tons 0.780 0.60o N/A N/A
Water Cooled, 90 tons and o 730 0.55o N/A N/A
Rotary Screw < 15o tons
and Scroll 150 tons and I o.610 0.510 N/A N/A
<300 tons
> 300 tons o.60o 0.490 N/A N/A
< 15o tons o.610 o.620 0.630 0.400
15o tons and 0.590 0.560 0.600 0.400
Water Cooled, < 300 tons
Centrifugal 300 tons and I< 60o tons 0.570 0.510 0.580 0.400
> 600 tons 0.550 0.510 0.550 0.400
a.Compliance with fill load efficiency numbers and IPLV numbers are both required.
b. Only Chillers with Variable Speed Drives(VSD) may use the optional compliance path here for chiller
efficiency.
TABLE 507.2.1(6)
ABSORPTION CHILLERS -EFFICIENCY REQUIREMENTS
Required Efficiency Full Load COP
Equipment Type (IPLV)
Air Cooled, Single Effect o.60,but only allowed in
heat recovery applications
Water Cooled, Single Effect 0,70, but only allowed in
heat recovery applications
Double Effect-Direct Fired 1.0 (1.05)
Double Effect-Indirect Fired 1.20
50 7.2.2 Reduced Lighting Power Density.
Whole Building Lighting Power Density (Watts/ft2) must be reduced by at least lo%
from the values in table 505.5.2, or as shown in table 507.2.2.
221Page
507.2.2.1 Automatic Daylighting Controls.
Automatic daylighting controls shall be installed in the daylight zone and shall meet the
requirements of 505.2.2.1.3.
TABLE 507.2.2
REDUCED INTERIOR LIGHTING POWER ALLOWANCES
LIGHTING POWER DENSITY
I Building Area T Vpea Reduced whole building(W/fv)
Automotive Facility 0.8
I Convention Center 1.1
Court House 1.1
Dining: Bar Lounge/Leisure 1.2 I
I Dining: Cafeteria/Fast Food 1.3 I
Dining: Family 1.4
Dormitory 0.9
1 Exercise Center 0.9 I
Fire Station 0.7
1 Gymnasium 1.0 I
I Healthcare-Clinic 0.9
Hospital 1.1 I
I Hotel I 0.9 I
I Library I 1.2
Manufacturing Facility I 1.2
I Motel 0.9
I Motion Picture Theater 1.1
Multi-Family I o.6
I Museum 1.0
1 Office 0.8 I
Parking Garage 0.3
Penitentiary I 0.9
I Performing Arts Theater 1.4
I Police 0.9 I
Post Office 1.0 I
Religious Building I 1.2
I Retailb 1.2
School/University 1.1 I
I Sports Arena I 1.0
I Town Hall I 1.0
Transportation I 0.9
I Warehouse I 0.7 I
Workshop 1.3 I
See IECC 2009 Table 505.2 for notes and exception.
50 7.2.3 On-site Supply of Renewable Energy
The building or surrounding property shall incorporate an on-site renewable energy
system that supplies 3% or more of total building electrical loads. On-site power
generation using nonrenewable resources does not meet this requirement.
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The jurisdiction shall be provided with an energy analysis that documents the renewable
energy contribution to the building or a calculation demonstrating that the on-site
supply of renewable energy:
a) Is capable of providing at least 3 percent of the total energy load of the building,
or
b) Has an installed maximum generating capacity equal to or greater than o.5o
watts per square foot of usable floor space.
Insert IECC2009 Chapter 6 —Referenced Standards
241 Page