CODES

ADOPTS WITHOUT AMENDMENTS:

International Green Construction Code 2012 (IGCC 2012)

Copyright

Preface

Effective Use of the International Green Construction Code

Legislation

Chapter 1 Scope and Administration

Chapter 2 Definitions

Chapter 3 Jurisdictional Requirements and Life Cycle Assessment

Chapter 4 Site Development and Land Use

Chapter 5 Material Resource Conservation and Efficiency

Chapter 6 ENERGY CONSERVATION, EFFICIENCY AND CO2e EMISSION REDUCTION

Chapter 7 Water Resource Conservation, Quality and Efficiency

Chapter 8 Indoor Environmental Quality and Comfort

Chapter 9 Commissioning, Operation and Maintenance

Chapter 10 Existing Buildings

Chapter 11 Existing Building Site Development

Chapter 12 Referenced Standards

Appendix A Project Electives

Appendix B Radon Mitigation

Appendix C Optional Ordinance

Appendix D Enforcement Procedures

NORMATIVE APPENDIX A— PRESCRIPTIVE BUILDING ENVELOPE TABLES

NORMATIVE APPENDIX B— PRESCRIPTIVE CONTINUOUS AIR BARRIER

NORMATIVE APPENDIX C— PRESCRIPTIVE EQUIPMENT EFFICIENCY TABLES

NORMATIVE APPENDIX D— PERFORMANCE OPTION FOR ENERGY EFFICIENCY

NORMATIVE APPENDIX E— IAQ LIMIT REQUIREMENTS FOR OFFICE FURNITURE SYSTEMS AND SEATING

NORMATIVE APPENDIX F— BUILDING CONCENTRATIONS

INFORMATIVE APPENDIX G—INFORMATIVE REFERENCES

INFORMATIVE APPENDIX H— INTEGRATED DESIGN

INFORMATIVE APPENDIX I— ADDENDA DESCRIPTION INFORMATION

The provisions of this chapter are intended to provide an interior environment that is conducive to the health of building occupants.
An indoor air quality management plan shall be developed. Such plan shall address the methods and procedures to be used during design and construction to obtain compliance with Sections 802 through 805.
To facilitate the operation and maintenance of the completed building, the building and its systems shall comply with the requirements of Sections 802.2 and 802.3.
The arrangement and location of air-handling system components including, but not limited to, ducts, air handler units, fans, coils and condensate pans, shall allow access for cleaning and repair of the air-handling surfaces of such components. Access ports shall be installed in the air-handling system to permit such cleaning and repairs. Piping, conduits, and other building components shall not be located so as to obstruct the required access ports.
Filter racks shall be designed to prevent airflow from bypassing filters. Access doors and panels provided for filter replacement shall be fitted with flexible seals to provide an effective seal between the doors and panels and the mating filter rack surfaces. Special tools shall not be required for opening access doors and panels. Filter access panels and doors shall not be obstructed.
The ventilation of buildings during the construction phase shall be in accordance with Sections 803.1.1 through 803.1.3.
Duct and other related air distribution component openings shall be covered with tape, plastic, sheet metal or shall be closed by an approved method to reduce the amount of dust and debris that collects in the system from the time of rough-in installation and until startup of the heating and cooling equipment. Dust and debris shall be cleaned from duct openings prior to system flush out and building occupancy.
Temporary ventilation during construction shall be provided in accordance with Sections 803.1.2.1 through 803.1.2.3.
Ventilation during construction shall be achieved through openings in the building envelope using one or more of the following methods:
1. Natural ventilation in accordance with the provisions of the International Building Code or the International Mechanical Code.
2. Fans that produce a minimum of three air changes per hour.
3. Exhaust in the work area at a rate of not less than 0.05 cfm/ft2 (0.24 L/s/in2) and not less than 10 percent greater than the supply air rate so as to maintain negative pressurization of the space.
HVAC supply and return duct and equipment openings shall be protected during dust-producing operations.
Where a forced air HVAC system is used during construction, new return air filters shall be installed prior to system flush out and building occupancy.
Where spaces are conditioned during the construction phase, space conditioning systems shall be of the ductless variety, or filters for ducted systems shall be rated at MERV 8 or higher in accordance with ASHRAE 52.2, and system equipment shall be designed to be compatible. Duct system design shall account for pressure drop across the filter.
Buildings shall be designed in compliance with ASHRAE 55, Sections 6.1, “Design,” and 6.2, “Documentation.”
Exception: Spaces with special requirements for processes, activities, or contents that require a thermal environment outside of that which humans find thermally acceptable, such as food storage, natatoriums, shower rooms, saunas and drying rooms.
Smoking shall not be allowed inside of buildings. Any exterior designated smoking areas shall be located not less than 25 ft (7.5 m) away from building entrances, outdoor air intakes, and operable windows.
The isolation of pollutant sources related to print, copy and janitorial rooms, garages and hangars shall be in accordance with Section 803.4.1.
Enclosed rooms or spaces that are over 100 square feet (9.3 m2) in area and that are used primarily as a print or copy facility containing five or more printers, copy machines, scanners, facsimile machines or similar machines in any combination, and rooms used primarily as janitorial rooms or closets where the use or storage of chemicals occurs, shall comply with all of the following:
1. The enclosing walls shall extend from the floor surface to the underside of the floor, roof deck or solid ceiling above and shall be constructed to resist the passage of airborne chemical pollutants and shall be constructed and sealed as required for 1-hour fire-resistance-rated construction assemblies. Alternatively, for janitorial rooms and closets, all chemicals shall be stored in approved chemical safety storage cabinets.
2. Doors in the enclosing walls shall be automatic or self-closing.
3. An HVAC system shall be provided that: provides separate exhaust airflow to the outdoors at a rate of not less than 0.50 cfm per square foot (2.4 L/s/m2); that maintains a negative pressure of not less than 7 Pa within the room; and that prohibits the recirculation of air from the room to other portions of the building.
Filters for air-conditioning systems that serve occupied spaces shall be rated at MERV 11 or higher, in accordance with ASHRAE Standard 52.2, and system equipment shall be designed to be compatible. The air-handling system design shall account for pressure drop across the filter. The pressure drop across clean MERV 11 filters shall be not greater than 0.45 in. w.c. at 500 FPM (412 Pa at 2.54 m/s) filter face velocity. Filter performance shall be shown on the filter manufacturer’s data sheet.
Where located within buildings, fireplaces, solid fuel-burning appliances, vented decorative gas appliances, vented gas fireplace heaters and decorative gas appliances for installation in fireplaces shall comply with Sections 804.1.1 through 804.1.3. Unvented room heaters and unvented decorative appliances, including alcohol burning, shall be prohibited.
Fireplaces and fuel-burning appliances shall be vented to the outdoors and shall be provided with combustion air provided from the outdoors in accordance with the International Mechanical Code and the International Fuel Gas Code. Solid-fuel-burning fireplaces shall be provided with a means to tightly close off the chimney flue and combustion air openings when the fireplace is not in use.
Wood stoves and wood-burning fireplace inserts shall be listed and, additionally, shall be labeled in accordance with the requirements of the EPA Standards of Performance for New Residential Wood Heaters, 40 CFR Part 60, subpart AAA.
Biomass fireplaces, stoves and inserts shall be listed and labeled in accordance with ASTM E 1509 or UL 1482. Biomass furnaces shall be listed and labeled in accordance with CSA B366.1 or UL 391. Biomass boilers shall be listed and labeled in accordance with CSA B366.1 or UL 2523.
Where this section is indicated to be applicable in Table 302.1, and after all interior finishes are installed, the building shall be tested for indoor air quality and the testing results shall indicate that the levels of VOCs meet the levels detailed in Table 804.2 using testing protocols in accordance with ASTM D 6196, ASTM D 5466, ASTM D 5197, ASTM D 6345, and ISO 7708. Test samples shall be taken in not less than one location in each 25,000 square feet (1860 m2) of floor area or in each contiguous floor area.
Exceptions:
1. Group F, H, S and U occupancies shall not be required to comply with this section.
2. A building shall not be required to be tested where a similarly designed and constructed building as determined by the code official, for the same owner or tenant, has been tested for indoor air quality and the testing results indicate that the level of VOCs meet the levels detailed in Table 804.2.
3. Where the building indoor environment does not meet the concentration limits in Table 804.2 and the tenant does not address the air quality issue by mitigation and retesting, the building shall be flushed-out by supplying continuous ventilation with all air-handling units at their maximum outdoor air rate for at least 14 days while maintaining an internal temperature of at least 60°F (15.6°C), and relative humidity not higher than 60 percent. Occupancy shall be permitted to start 7 days after start of the flush-out, provided that the flush-out continues for the full 14 days.

TABLE 804.2
MAXIMUM CONCENTRATION OF AIR POLLUTANTS

MAXIMUM CONCENTRATION OF AIR
POLLUTANTS RELEVANT TO IAQ
MAXIMUM CONCENTRATION,
ug/m3 (unless otherwise noted)
1-Methyl-2-pyrrolidinonea160
1,1,1-Trichloroethane1000
1,3-Butadiene20
1,4-Dichlorobenzene800
1,4-Dioxane3000
2-Ethylhexanoic acida25
2-Propanol7000
4-Phenylcyclohexene (4-PCH)a2.5
Acetaldehyde140
Acrylonitrile5
Benzene60
t-Butyl methyl ether8000
Caprolactama100
Carbon disulfide800
Carbon monoxide9 ppm and no greater than 2
ppm above outdoor levels
Carbon tetrachloride40
Chlorobenzene1000
Chloroform300
Dichloromethane400
Ethylbenzene2000
Ethylene glycol400
Formaldehyde27
n-Hexane7000
Naphthalene9
Nonanala13
Octanala7.2
Particulates (PM 2.5)35 (24-hr)
Particulates (PM 10)150 (24-hr)
Phenol200
Styrene900
Tetrachloroethene35
Toluene300
Total volatile organic compounds (TVOC)500
Trichloroethene600
Xylene isomers700
a. This chemical has a limit only where carpets and fabrics with styrene butadiene rubber (SBR) latex backing material are installed as part of the base building systems.
The use of the following materials shall be prohibited:
1. Asbestos-containing materials.
2. Urea-formaldehyde foam insulation.
Composite wood products used interior to the approved weather covering of the building shall comply with the emission limits or be manufactured in accordance with the standards cited in Table 806.1. Compliance with emission limits shall be demonstrated following the requirements of Section 93120 of Title 17, California Code of Regulations, Airborne Toxic Control Measure to Reduce Formaldehyde Emissions from Composite Wood Products.
Exceptions:
1. Composite wood products that are made using adhesives that do not contain urea-formaldehyde (UF) resins.
2. Composite wood products that are sealed with an impermeable material on all sides and edges.
3. Composite wood products that are used to make elements considered to be furniture, fixtures and equipment (FF&E) that are not permanently installed.

TABLE 806.1
COMPOSITE PRODUCTS EMISSIONS

PRODUCTFORMALDEHYDE
LIMITb (ppm)
STANDARD
Hardwood plywood0.05
Particle board0.09
Medium-density fiberboard0.11
Thin medium-density fiberboarda0.13
a. Maximum thickness of 5/16 inch (8 mm).
b. Phase 2 Formaldehyde Emissions Standards, Table 1, Section 93120, Title 17, California Code of Regulations; compliance shall be demonstrated in accordance with ASTM E 1333 or ASTM D 6007.
A minimum of 85 percent by weight or volume, of specific categories of site-applied adhesives and sealants used on the interior side of the building envelope shall comply with the VOC content limits in Table 806.2(1) or alternative VOC emission limits in Table 806.2(2). The VOC content shall be determined in accordance with the appropriate standard being either U.S. EPA Method 24 or SCAQMD Method 304, 316A or 316B. The exempt compound content shall be determined by either SCAQMD Methods 302 and 303 or ASTM D 3960. Table 806.2(1) adhesives and sealants regulatory category and VOC content compliance determination shall conform to the SCAQMD Rule 1168 Adhesive and Sealant Applications as amended on 1/7/05. The provisions of this section shall not apply to adhesives and sealants subject to state or federal consumer product VOC regulations. HVAC duct sealants shall be classified as “Other” category within the SCAQMD Rule 1168 sealants table.
Exception: HVAC air duct sealants are not required to meet the emissions or the VOC content requirements when the air temperature in which they are applied is less than 40°F (4.5°C).

Table 806.2(2) adhesive alternative emissions standards compliance shall be determined utilizing test methodology incorporated by reference in the CDPH/EHLB/Standard Method V.1.1, Standard Method for Testing VOC Emissions From Indoor Sources, dated February 2010. The alternative emissions testing shall be performed by a laboratory that has the CDPH/EHLB/Standard Method V.1.1 test methodology in the scope of its ISO 17025 Accreditation.

TABLE 806.2(1)
SITE-APPLIED ADHESIVE AND SEALANT VOC LIMITS

ADHESIVEVOC LIMITa, b
Indoor carpet adhesives50
Carpet pad adhesives50
Outdoor carpet adhesives150
Wood flooring adhesive100
Rubber floor adhesives60
Subfloor adhesives50
Ceramic tile adhesives65
VCT and asphalt tile adhesives50
Dry wall and panel adhesives50
Cove base adhesives50
Multipurpose construction adhesives70
Structural glazing adhesives100
Single-ply roof membrane adhesives250
Architectural sealants250
Architectural sealant primer
Nonporous250
Porous775
Modified bituminous sealant primer500
Other sealant primers750
CPVC solvent cement490
PVC solvent cement510
ABS solvent cement325
Plastic cement welding250
Adhesive primer for plastic550
Contact adhesive80
Special purpose contact adhesive250
Structural wood member adhesive140
a. VOC limit less water and less exempt compounds in grams/liter.
b. For low-solid adhesives and sealants, the VOC limit is expressed in grams/liter of material as specified in Rule 1168. For all other adhesives and sealants, the VOC limits are expressed as grams of VOC per liter of adhesive or sealant less water and less exempt compounds as specified in Rule 1168.

TABLE 806.2(2)
VOC EMISSION LIMITS

VOCLIMIT
Individual VOCs1/2 CA chronic RELa
Formaldehyde≤ 16.5 μg/m3 or ≤ 13.5 ppbb, c
a. CDPH/EHLB/Standard Method V.1.1 Chronic Reference Exposure Level (CREL).
b. Effective January 1, 2012, limit became less than or equal to the CDPH/EHLB/Standard Method V.1.1 CREL (≤ 9 μg/m3 or ≤ 7 ppb)
c. Formaldehyde emission levels need not be reported for materials where formaldehyde is not added by the manufacturer of the material.
A minimum of 85 percent by weight or volume, of site-applied interior architectural coatings shall comply with VOC content limits in Table 806.3(1) or the alternate emissions limits in Table 806.3(2). The exempt compound content shall be determined by ASTM D 3960.

Table 806.3(2) architectural coating alternate emissions standards compliance shall be determined utilizing test methodology incorporated by reference in the CDPH/EHLB/Standard Method V.1.1, Standard Method for Testing VOC Emissions From Indoor Sources, dated February 2010. The alternative emissions testing shall be performed by a laboratory that has the CDPH/EHLB/Standard Method V.1.1 test methodology in the scope of its ISO 17025 Accreditation.

TABLE 806.3(1)
VOC CONTENT LIMITS FOR ARCHITECTURAL COATINGSc, d, e

CATEGORYEffective:
January 1, 2010
Effective:
January 1, 2012
LIMITa
g/l
LIMITa
g/l
Flat coatings50
Nonflat coatings100
Nonflat – High-gloss coatings150
Specialty coatings:
Aluminum roof coatings400
Basement specialty coatings400
Bituminous roof coatings50
Bituminous roof primers350
Bond breakers350
Concrete curing compounds350
Concrete/masonry sealers100
Driveway sealers50
Dry fog coatings150
Faux finishing coatings350
Fire-resistive coatings350
Floor coatings100
Form-release compounds250
Graphic arts coatings (Sign paints)500
High-temperature coatings420
Industrial maintenance coatings250
Low solids coatings120b
Magnesite cement coatings450
Mastic texture coatings100
Metallic pigmented coatings500
Multi-color coatings250
Pretreatment wash primers420
Primers, sealers, and undercoaters100
Reactive penetrating sealers350
Recycled coatings250
Roof coatings50
Rust-preventative coatings400250
Shellacs, clear730
Shellacs, opaque550
Specialty primers, sealers, and undercoaters350100
Stains250
Stone consolidants450
Swimming pool coatings340
Traffic marking coatings100
Tub and tile refinish coatings420
Waterproofing membranes250
Wood coatings275
Wood preservatives350
Zinc-rich primers340
a. Limits are expressed as VOC Regulatory (except as noted), thinned to the manufacturer’s maximum thinning recommendation, excluding any colorant added to tint bases.
b. Limit is expressed as VOC actual.
c. The specified limits remain in effect unless revised limits are listed in subsequent columns in the table.
d. Values in this table are derived from those specified by the California Air Resources Board Suggested Control Measure for Architectural Coatings, dated February 1, 2008.
e. Table 806.3(1) architectural coating regulatory category and VOC content compliance determination shall conform to the California Air Resources Board Suggested Control Measure for Architectural Coatings, dated February 1, 2008.

TABLE 806.3(2)
ARCHITECTURAL COATINGS VOC EMISSION LIMITS

VOCLIMIT
Individual1/2 CA chronic RELa
Formaldehyde≤ 16.5 μg/m3 or ≤ 13.5 ppbb
a. CA Chronic Reference Exposure Level (CREL).
b. Formaldehyde emission levels need not be reported for materials where formaldehyde is not added by the manufacturer of the material.
A minimum of 85 percent of the total area of flooring installed within the interior of the building shall comply with the requirements of Table 806.4(2). Where flooring with more than one distinct product layer is installed, the emissions from each layer shall comply with these requirements. The test methodology used to determine compliance shall be from CDPH/EHLB/Standard Method V.1.1, Standard Method for Testing VOC Emissions From Indoor Sources, dated February 2010. The emissions testing shall be performed by a laboratory that has the CDPH/EHLB/Standard Method V.1.1 test methodology in the scope of its ISO 17025 Accreditation.

Where post-manufacture coatings or surface applications have not been applied, the flooring listed in Table 806.4(1) shall be deemed to comply with the requirements of Table 806.4(2).

TABLE 806.4(1)
FLOORING DEEMED TO COMPLY WITH VOC EMISSION LIMITS

Ceramic and concrete tile
Organic-free, mineral-based
Clay pavers
Concrete pavers
Concrete
Metal

TABLE 806.4(2)
FLOORING VOC EMISSION LIMITS

VOCLIMIT
Individual1/2 CA chronic RELa
Formaldehyde≤ 16.5 μg/m3 or ≤ 13.5 ppb
a. CA Chronic Reference Exposure Level (CREL).
A minimum of 85 percent of acoustical ceiling tiles and wall systems, by square feet, shall comply with the requirements of Table 806.5(2). Where ceiling and wall systems with more than one distinct product layer are installed, the emissions from each layer shall comply with these requirements. The test methodology used to determine compliance shall be from CDPH/EHLB/Standard Method V.1.1, Standard Method for Testing VOC Emissions From Indoor Sources, dated February 2010. The emissions testing shall be performed by a laboratory that has the CDPH/EHLB/Standard Method V.1.1 test methodology in the scope of its ISO 17025 Accreditation.

Where post-manufacture coatings or surface applications have not been applied, the ceiling or wall systems listed in Table 806.5(1) shall be deemed to comply with the requirements of Table 806.5(2).

TABLE 806.5(1)
CEILING AND WALL SYSTEMS DEEMED TO
COMPLY WITH VOC EMISSION LIMITS

Ceramic and concrete tile
Organic-free, mineral-based
Gypsum plaster
Clay masonry
Concrete masonry
Concrete
Metal

TABLE 806.5(2)
ACOUSTICAL CEILING TILES AND WALL
SYSTEMS VOC EMISSION LIMITS

VOCLIMIT
Individual1/2 CA chronic RELa
Formaldehyde≤ 16.5 μg/m3 or ≤ 13.5 ppb
a. CA Chronic Reference Exposure Level (CREL).
A minimum of 85 percent of insulation shall comply with the requirements of Table 806.6(1) or Table 808.6(2). The test methodology used to determine compliance shall be from CDPH/EHLB/Standard Method V.1.1, Standard Method for Testing VOC Emissions From Indoor Sources, dated February 2010. The emissions testing shall be performed by a laboratory that has the CDPH/EHLB/Standard Method V.1.1 test methodology in the scope of its ISO 17025 Accreditation.

TABLE 806.6(1)
INSULATION VOC EMISSION LIMITS

VOCLIMIT
Individual1/2 CA chronic RELa
Formaldehyde≤ 16.5 μg/m3 or ≤ 13.5 ppb
a. CA Chronic Reference Exposure Level (CREL).

TABLE 806.6(2)
INSULATION MANUFACTURED WITHOUT FORMALDEHYDE
VOC EMISSION LIMITS

VOCLIMIT
Individual1/2 CA chronic RELa
a. CA Chronic Reference Exposure Level (CREL).
Where required by Table 302.1, buildings and tenant spaces shall comply with the minimum sound transmission class and maximum sound level requirements of Sections 807.2 through 807.5.2.
Exception: The following buildings and spaces need not comply with this section:
1. Building or structures that have the interior environment open to the exterior environment.
2. Parking structures.
3. Concession stands and toilet facilities in Group A-4 and A-5 occupancies.
Sound transmission classes established by laboratory measurements shall be determined in accordance with ASTM E 413 based on measurements in accordance with ASTM E 90. Sound transmission classes for concrete masonry and clay masonry assemblies shall be calculated in accordance with TMS 0302 or determined in accordance with ASTM E 413 based on measurements in accordance with ASTM E 90. Field measurements of completed construction, if conducted, shall be in accordance with ASTM E 336 where conditions regarding room size and absorption required in ASTM E 336 are met.
Wall and floor-ceiling assemblies that separate Group A and F occupancies from one another or from Group B, I, M or R occupancies shall have a sound transmission class (STC) of not less than 60 or an apparent sound transmission class (ASTC) of not less than 55 if the completed construction is field tested. Wall and floor-ceiling assemblies that separate Group B, I, M or R occupancies from one another shall have a sound transmission class (STC) of not less than 50 or an apparent sound transmission class (ASTC) of not less than 45 if the completed construction is field tested. Wall and floor-ceiling assemblies that separate Group R condominium occupancies from one another or from other Group B, I, M or R occupancies shall have a sound transmission class (STC) of not less than 55 or an apparent sound transmission class (ASTC) of not less than 50 if the completed construction is field tested.

Exception: This section shall not apply to wall and floor-ceiling assemblies enclosing:

1. Public entrances to tenants of covered and open mall buildings.
2. Concession stands and lavatories in Group A-4 and A-5 occupancies.
3. Spaces and occupancies that are accessory to the main occupancy.
Wall and floor-ceiling assemblies that separate a mechanical equipment room or space from the remainder of the building shall have a sound transmission class (STC) of not less than 50 or an apparent sound transmission class (ASTC) of not less than 45 if the completed construction is field tested, Wall and floor-ceiling assemblies that separate a generator equipment room or space from the remainder of the building shall have a sound transmission class (STC) of not less than 60 or an apparent sound transmission class (ASTC) of not less than 55 if the completed construction is field tested.
The design and construction of mechanical and electrical generator systems and of walls and floor-ceilings separating such equipment from the outdoors or other building space shall achieve sound levels not greater than specified in Sections 807.3.1 and 807.3.2 during the normal operation of mechanical equipment and generators. Electrical generators used only for emergencies are exempt from the limits on sound levels within the building and need only meet daytime limits for sound-reaching boundaries. Where necessary, walls and floor-ceiling assemblies with sound transmission class (STC) ratings greater than specified in Section 807.2.2 shall be used to meet this requirement.
Where mechanical equipment or electrical generators are located outside of the building envelope or their sound is exposed to the exterior environment, the sound reaching adjacent properties shall comply with all applicable ordinances and zoning performance standards. In the absence of an ordinance or zoning performance standard specifying sound limits at the boundary, or a law specifying different limits if limits are imposed, an adjacent property at the boundary shall not be subjected to a sound level greater than indicated in Table 807.3.1 because of the sound of the equipment. Where a generator is used only for providing emergency power and all periodic operational testing is done during the daytime period of Table 807.3.1, the sound of a generator during the night-time hours shall meet the daytime limits.

TABLE 807.3.1
MAXIMUM PERMISSIBLE OUTDOOR A-WEIGHTED SOUND LEVELS

INITIATING PROPERTYADJACENT PROPERTYMAXIMUM A-WEIGHTED SOUND LEVEL
(dB)
Day TimeNight Time
7:00 AM to 10:00 PM10:00 PM to 7:00 AM
All, except factory, industrial, or storageAll, except factory, industrial, or storage6555
Factory, industrial, or storageAll other, except factory, industrial, or storage6555
Factory, industrial, or storageFactory, industrial, or storage7575
Sound levels within rooms generated by HVAC and mechanical systems within the building, including electrical generators used regularly but excluding emergency generators, for all modes of operation shall not exceed the limits shown in Table 807.3.2.

TABLE 807.3.2
MAXIMUM PERMISSIBLE INDOOR BACKGROUND SOUND IN ROOMS

OCCUPANCY TYPEROOMNOISE CRITERIA (NC) LIMITS
Assembly A-1Symphony, concert, recital halls30
Motion picture theaters40
Assembly A-3Places of religious worship, lecture halls not part of educational facilitie35
Art gallery, exhibit hall, funeral parlor, libraries, and museums40
Courtroom35
Educational occupancies above 12th grade(See Educational)
Assembly A-4Gymnasiums, natatoriums and arenas with seating areas45
Business BOffice—enclosed greater than 300 square feet35
Office—enclosed less than or equal 300 square feet40
Office—open plan45
Corridors and lobbies45
Conference rooms35
Educational occupancies above 12th grade(See Educational)
Educational ECore learning lecture and classrooms that are less than or equal to 20,000 cubic feet in volume
Core learning lecture and classrooms that are greater than 20,000 cubic feet in volume
Open plan classrooms
Administrative offices and rooms
Music teaching studios
Music practice rooms
ANSI/ASA S12.60-2010/Part 1
or
ANSI/ASA S12.60-2009/Part 2
Institutional I-2Wards
Private and semi-private patient rooms
Operating rooms
Corridors and public areas
2010 FGI-ASHE Guidelines for
Design and Construction of
Healthcare Facilities
Rooms or suites25 to 35
Bathroom, kitchen, utility room40
Residential R-1
and R-2
Meeting rooms35
Corridors and lobbies45
Service areas45
For SI: 1 square foot = 0.093 m2, 1 cubic foot = 28.31 L.
Floor and ceiling assemblies between dwelling rooms or dwelling units and between dwelling rooms or dwelling units and public or service areas within the structure in occupancies classified as Group A1, A2, A3, B, E, I, M or R shall have an impact insulation classification (IIC) rating of not less than 50 where laboratory-tested and 45 where field-tested when tested in accordance with ASTM E 492. New laboratory tests for impact insulation class (IIC) of an assembly are not required where the IIC has been established by prior tests.
An approved agency, funded by the building owner, shall furnish report(s) of test findings indicating that the sound level results are in compliance with this section, applicable laws and ordinances, and the construction documents. Discrepancies shall be brought to the attention of the design professional and code official prior to the completion of that work. A final testing report documenting required testing and corrections of any discrepancies noted in prior tests shall be submitted at a point in time agreed upon by the building owner, or building owner’s agent, design professional, and the code official for purposes of demonstrating compliance.
Special inspections shall be conducted in accordance with Section 903.1 to demonstrate compliance with the requirements of Section 807.3.1. Testing shall be conducted following the complete installation of the equipment or generators, the installation of sound reduction barriers, and balancing and operation of the equipment or generators. Testing shall be at locations representing the four cardinal directions from the face of the project building. Such testing shall demonstrate that the equipment is capable of compliance with the night-time limits under normal night-time operating conditions, and if higher sound levels are possible during the daytime, compliance with the daytime limits shall also be demonstrated.
Special inspections shall be conducted in accordance with Section 903.1 to demonstrate compliance with the requirements of Section 807.3.2. Testing shall be executed within not less than 50 percent of the total number of rooms contained in a building or structure of the types listed in Table 807.3.2 for the given occupancy in accordance with Table 903.1. Testing shall occur following the complete installation of the equipment and systems, the installation of any sound reduction barriers, and balancing and operation of the equipment and systems.
Wall and floor-ceiling assemblies that separate a mechanical or emergency generator equipment room or space from the remainder of the building shall have a sound transmission class (STC) of not less than 60 determined in accordance with ASTM E 90 and ASTM E 413, or for concrete masonry and clay masonry assemblies as calculated in accordance with TMS 0302 or as determined in accordance with ASTM E 90 and ASTM E 413.
HVAC system caused background sound levels for all modes of operation within rooms shall be in accordance with the lower and upper noise criteria (NC) limits as shown in Table 807.3.2. Special inspections shall be required and conducted in accordance with Section 903.1 in order to demonstrate compliance.
An approved agency, employed by the building owner, shall furnish report(s) of test findings indicating that the results are in compliance with this section and the construction documents. Discrepancies shall be brought to the attention of the design professional and code official prior to the completion of that work. A final testing report documenting required testing and corrections of any discrepancies noted in prior tests shall be submitted at a point in time agreed upon by the building owner, or building owner’s agent, design professional, and the code official for purposes of demonstrating compliance.
Exception: Test reports are not required for approved assemblies with an established sound transmission class (STC) rating.
In accordance with Section 807.3.1, all mechanical and emergency generator equipment shall be field tested in accordance with Table 903.1. Testing shall be conducted following the complete installation of the equipment or generators, the installation of sound reduction barriers, and balancing and operation of the equipment or generators. Testing shall be at locations representing the four cardinal directions from the face of the project building. Such testing shall occur on a Tuesday, Wednesday or Thursday at both the day and night times within the periods shown in Table 807.3.1.
Testing shall be executed in accordance with Section 807.3.1 within not less than 50 percent of the total number of rooms contained in a building or structure, exclusive of closets and storage rooms less than 50 square feet (4.65 m2) in area, and exclusive of toilet facilities in accordance with Table 903.1. Testing shall occur following the complete installation of the equipment and systems, the installation of any sound reduction barriers, and balancing and operation of the equipment and systems.
Fenestration shall be provided in building roofs and walls in accordance with Sections 808.2 and 808.3. Interior spaces shall be planned to benefit from exposure to the natural light offered by the fenestration in accordance with this section.
Advertisements or displays affixed or applied to a fenestration, or supported by the building shall not reduce daylighting below the levels prescribed herein.

Exception: The ground floor and the story immediately above the ground floor.

Daylighting of building spaces in accordance with Section 808.3 shall be required for the following occupancies:
1. A Group A-3 occupancy where the specific use of the room or space is for reading areas in libraries, waiting areas in transportation terminals, exhibition halls, gymnasiums, and indoor athletic areas.
2. A Group B occupancy where the specific use of the room or space is for educational facilities for students above the 12th grade, laboratories for testing and research, post offices, print shops, offices, and training and skill development not within a school or academic program.
3. Group E, F and S occupancies.
4. Those portions of Group M occupancies located directly underneath a roof, where the net floor area of the entire occupancy is 10,000 square feet (929 m2) or greater.

Exception: Daylighting is not required in the following rooms and spaces:

1. Building spaces where darkness is required for the primary use of the space, including, but not limited to, light-sensitive material handling and darkrooms.
2. Building spaces that are required to be cooled below 50°F (10°C).
3. Unconditioned buildings that are equipped with exterior doors that, when opened, provide equivalent daylighting.
In buildings not greater than two stories above grade, not less than 50 percent of the net floor area shall be located within a daylit area. In buildings three or more stories above grade, not less than 25 percent of the net floor area shall be located within a daylit area. Buildings required to have more than 25,000 square feet (2323 m2) of daylit area shall comply with Section 808.3.2. All other buildings shall comply with either Section 808.3.1 or Section 808.3.2.
Exception: For buildings not less than three stories above grade with obstructed exterior walls or shaded roofs, the required daylit area shall be modified in accordance with Equation 8-1.
Required daylit area ≥ 25% × TDP(Equation 8-1)

The total daylight potential (TDP) is a weighted average of the individual daylight potentials for each floor:

TDP=Σ(DP1 ÷ FA1/TF) + (DP2 ÷ FA2/TF) + …

For floors with roof area immediately above:

DP1, 2 ...=1 – [(OW1/TW1) × (OR1/TR1)]

For floors without roof area immediately above:

DP1, 2 ...=1 – (OW1/TW1)
OW1, 2 ...=The length of obstructed exterior wall for each floor that does not face a public way or a yard or court complying with Section 1206 of the International Building Code or where the distance to any buildings, structures, or geological formations in front of the wall is less than two times the height of the buildings, structures, or geological formations. For the purposes of this determination, the maximum allowed heights of buildings or structures on adjacent property under existing zoning regulations is permitted to be considered.
TW1, 2 ...=The total length of exterior wall for each floor.
OR1, 2 ...=The roof area immediately above each floor that is shaded during the peak sun angle on the summer solstice by permanent features of the building, or by permanent features of adjacent buildings.
TR1, 2 ...=The total roof area immediately above each floor.
FA1, 2 ...=The total floor area of each floor.
TF=The total building floor area.
Daylit areas shall comply with Section 808.3.1.1 or 808.3.1.2. For determining the total daylit area, any overlapping daylit areas shall be counted only once.
The total daylight area shall be the sum of the area of all sidelighting daylight zones and the area of all toplighting zones, except that sidelighting daylight zones shall not be included in the calculation of the area of toplighting daylight areas.
The daylit area shall be illuminated by fenestration that complies with Table 808.3.1.1 and Figure 808.3.1.1(4). Where fenestration is located in a wall, the daylit area shall extend laterally to the nearest 56-inch-high (1422 mm) partition, or up to 1.0 times the height from the floor to the top of fenestration facing within 45 degrees (0.785 rad) of east or west or up to 1.5 times the height from the floor to the top of all other fenestration, whichever is less, and longitudinally from the edge of the fenestration to the nearest 56-inch-high (1422 mm) partition, or up to 2 feet (610 mm), whichever is less, as indicated in Figure 808.3.1.1(1). Where fenestration is located in a rooftop monitor, the daylit area shall extend laterally to the nearest 56-inch-high (1422 mm) partition, or up to 1.0 times the height from the floor to the bottom of the fenestration, whichever is less, and longitudinally from the edge of the fenestration to the nearest 56-inch-high (1422 mm) partition, or up to 0.25 times the height from the floor to the bottom of the fenestration, whichever is less, as indicated in Figures 808.3.1.1(2) and 808.3.1.1(3).
EA = (AF × VT)/DA(Equation 8-2)

where:

EA=Effective aperture.
AF=Area of fenestration.
VT=Visible transmittance of the fenestration.
DA=Daylit area.

TABLE 808.3.1.1
MINIMUM EFFECTIVE APERTURE

SKY TYPEMINIMUM EFFECTIVE APERTURE
(percentage)
Sidelighting from fenestration in a wall
[see Figure 808.3.1.1(1)]
Sidelighting from rooftop monitor [see
Figures 808.3.1.1(2) and 808.3.1.1(3)]
Toplighting (see Figure 808.3.1.2)
Aa10.05.01.0
Bb12.06.01.2
Cc16.08.02.2
a. Sky Type A – more than 75 percent mean sunshine, in accordance with the NOAA Annual Mean Sunshine Percentage Table.
b. Sky Type B – 45 percent to 75 percent mean sunshine, in accordance with the NOAA Annual Mean Sunshine Percentage Table.
c. Sky Type C – less than 45 percent mean sunshine, in accordance with the NOAA Annual Mean Sunshine Percentage Table.
For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 degree = 0.017 rad.

FIGURE 808.3.1.1(1)
DAYLIT AREA ADJACENT TO FENESTRATION IN A WALL

For SI: 1 inch = 25.4 mm.

FIGURE 808.3.1.1(2)
DAYLIT AREA ADJACENT UNDER A ROOFTOP MONITOR

For SI: 1 inch = 25.4 mm.

FIGURE 808.3.1.1(3)
DAYLIT AREA ADJACENT UNDER A ROOFTOP MONITOR

FIGURE 808.3.1.1(4)
SKY TYPES

The daylit area shall be illuminated by a roof fenestration assembly such as a skylight, sloped glazing or tubular daylighting device that complies with Table 808.3.1.1 and Figure 808.3.1.2. The daylit area extends laterally and longitudinally beyond the glazed opening of the roof fenestration assembly to the nearest 56-inch-high (1422 mm) partition, or up to 0.7 times the height from the floor to the bottom of the rough opening of the daylighting well, whichever is less, as indicated in Figure 808.3.1.2.
For SI: 1 inch = 25.4 mm.

FIGURE 808.3.1.2
DAYLIT AREA UNDER A SKYLIGHT

Each daylit area shall comply with the requirements of either Section 808.3.2.1 or 808.3.2.2. Daylight analysis shall be conducted in accordance with Section 808.3.2.3.
Not less than 28 foot-candles (300 lux) and not more than 418 foot-candles (4500 lux) of natural light shall be available at a height of 30 inches (750 mm) above the floor 3 hours before the peak solar angle on the spring equinox.
Not less than 28 foot-candles (300 lux) and not more than 418 foot-candles (4500 lux) of natural light shall be available at a height of 30 inches (750 mm) above the floor 3 hours after the peak solar angle on the spring equinox.
A daylight analysis shall be performed that complies with the following:
1. Sky conditions shall be assumed to be clear.
2. Address the effects of exterior shading devices, buildings, structures, and geological formations on the fenestration of the proposed building and on the ground and other light reflecting surfaces. Include the effects of movable exterior fenestration shading devices. The configuration of fenestration with automatically controlled variable transmittance shall be adjusted to accurately represent the control system operation.
3. Exclude the effects of interior furniture systems, shelving, and stacks.
4. Use the actual reflectance characteristics of all materials.
5. Where blinds, shades and other movable interior fenestration shading devices are included in the analysis and the exact properties of such devices cannot be accurately modeled, such devices shall be assumed to be completely diffusing, with a visible transmittance of 5 percent for fabric shades, and 20 percent for horizontal or vertical blinds.
6. Calculation points shall be spaced not more than 39.4 inches (1 m) by 39.4 inches (1 m). The calculation grid shall start within 20 inches (508 mm) of each wall or partition.
7. Where details about the window framing, mullions, wall thickness and well depth cannot be included in the model, the visible transmittance of all fenestration shall be reduced by 20 percent.
Sky types as described in Section 808.4.1 or 808.4.2 shall be used in determining the applicable effective aperture in Table 808.3.1.1
All states, counties, and territories shall be sky type B, except as named herein. The states and counties in sky type A shall be: all of Arizona; in Nevada the counties of Churchill, Lincoln, Nye, Washoe, and counties south; in New Mexico the counties of Lincoln, Otero, Sandoval, San Juan, Santa Fe, Torrance and counties south; in Texas the counties of Hudspeth, El Paso, and Jeff Davis; in Utah the counties of Iron, Kane, and Washington; and in California all counties except Del Norte, Siskiyou, Modoc, Humboldt, Trinity, and Mendocino. Alaska shall be sky type C.
All international locations shall be sky type B, except as follows: locations with an annual average of more than 75 percent sunshine during daytime hours shall be sky type A, and locations with an annual average of less than 45 percent sunshine during daytime hours shall be sky type C.
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