• CHAPTER8
    INDOOR ENVIRONMENTAL QUALITY (IEQ)

    801.1 (8.1) Scope.

    This section specifies requirements for indoor environmental quality, including indoor air quality, environmental tobacco smoke control, outdoor air delivery monitoring, thermal comfort, building entrances, acoustic control, lighting quality, daylighting, and low-emitting materials.

    801.2 (8.2) Compliance.

    The indoor environmental quality shall comply with Section 801.3 (8.3), “Mandatory Provisions,” and either

    1. a.Section 801.4 (8.4), “Prescriptive Option,” or

    2. b.Section 801.5 (8.5), “Performance Option.”

    Daylighting and low-emitting materials are not required to use the same option, i.e., prescriptive or performance, for demonstrating compliance.

    801.3 (8.3)Mandatory Provisions

    801.3.1 (8.3.1)Indoor Air Quality.

    Buildings shall comply with the design requirements of ANSI/ASHRAE Standard 62.1, Sections 4 through 6, including applicable normative appendices, with the modifications and additions indicated herein. Health care facilities shall comply with the design requirements of ANSI/ASHRAE/ASHE Standard 170, including applicable normative appendices, with the modifications and additions indicated herein. Residential dwelling units shall comply with the design requirements of ANSI/ASHRAE Standard 62.2, Sections 4 through 8, with the modifications and additions indicated herein.

    Requirements provided in Sections 801.3.1.1 (8.3.1.1) through 801.3.1.7 (8.3.1.7) supersede such requirements in ASHRAE Standard 62.1, ASHRAE Standard 62.2, and ASHRAE/ASHE Standard 170.

    801.3.1.1 (8.3.1.1)Minimum Ventilation Rates.

    In health care facilities, the ventilation requirements of ASHRAE/ASHE Standard 170 shall apply. In residential dwelling units, the dwelling unit ventilation rates and local exhaust airflow rates as required by ASHRAE Standard 62.2 shall apply. ASHRAE Standard 62.2, Section 4.1.2, shall not apply. In all other cases, ASHRAE Standard 62.1, Sections 6.1.1 and 6.2, shall be used to determine minimum zone and intake outdoor airflow rates. ASHRAE Standard 62.1, Sections 6.1.2 and 6.1.3, shall not apply.

    Informative Note: ASHRAE Standard 62.1, Sections 6.1.1 and 6.2, define the Ventilation Rate Procedure for determining ventilation rates.

    801.3.1.2 (8.3.1.2)Outdoor Air Delivery Monitoring.

    801.3.1.2.1 (8.3.1.2.1)System Design for Outdoor Air Intake Measurement.

    Each mechanical ventilation system shall be configured to allow for the measurement of the outdoor air intake for use in testing and balancing, recommissioning, and outdoor air monitoring as required in Section 801.3.1.2.2 (8.3.1.2.2).

    801.3.1.2.2 (8.3.1.2.2)Monitoring Requirements.

    Each mechanical ventilation system shall have a permanently installed device to measure the minimum outdoor airflow that meets the following requirements:

    1. a.The device shall employ methods described in ANSI/ASHRAE Standard 111.

    2. b.The device shall have an accuracy of ±10% of the minimum outdoor airflow. Where the minimum outdoor airflow varies, as in demand control ventilation (DCV) systems, the device shall maintain this accuracy over the entire range of occupancy and system operation.

    3. c.The device shall be capable of notifying the building operator, either by activating a local indicator or sending a signal to a building monitoring system, whenever an outdoor air fault condition exists. This notification shall require manual reset.

    Exception: Constant-volume air supply systems that do not employ DCV and that use an indicator to confirm that the intake damper is open to the position needed to maintain the design minimum outdoor airflow as determined during system startup and balancing.

    801.3.1.3 (8.3.1.3)Filtration and Air Cleaner Requirements.

    1. a.Particulate Matter. The following requirements shall apply in all buildings.

      Exceptions: In health care facilities, the particulate filter requirements of ASHRAE/ASHE Standard 170 shall apply.

      1. 1.Wetted Surfaces. Particulate matter filters or air cleaners having a minimum efficiency reporting value (MERV) of not less than 8 when rated in accordance with ANSI/ASHRAE Standard 52.2 shall be provided upstream of all cooling coils or other devices with wetted surfaces through which air is supplied to an occupiable space. These requirements supersede the requirements in ASHRAE Standard 62.1, Section 5.8.

      2. 2.Particulate Matter Smaller than 10 Micrometers (PM10). Particulate matter filters or air cleaners shall be provided in accordance with Standard 62.1, Section 6.2.1.1, with the following modification. Such filters or air cleaners shall have a MERV of not less than 8 when rated in accordance with ASHRAE Standard 52.2.

      3. 3.Particulate Matter Smaller than 2.5 Micrometers (PM2.5). Particulate matter filters or air cleaners shall be provided in accordance with Standard 62.1, Section 6.2.1.2, with the following modification. Such filters or air cleaners shall have a MERV of not less than 13 when rated in accordance with ASHRAE Standard 52.2.

    2. b.Ozone. Air cleaning devices for ozone shall be provided for buildings located in an area that is designated “non-attainment” in an area that exceeds the National Ambient Air Quality Standards (NAAQS) for ozone, as determined by the authority having jurisdiction (AHJ). Such air cleaning devices shall have an ozone removal efficiency of no less than 40% where installed, operated, and maintained in accordance with the manufacturer’s recommendations. Such air cleaning devices shall be operated whenever the outdoor ozone level is expected to exceed the NAAQS. This requirement supersedes the requirements of ASHRAE Standard 62.1, Section 6.2.1.3. This requirement applies to all buildings, including health care facilities covered by ASHRAE/ASHE Standard 170.

    3. c.Sealing. Where particulate matter filters or air cleaners are required by Section 801.3.1.3 (8.3.1.3), filter tracks, filter supports, filters, and access doors shall be sealed in accordance with the following:

      1. 1.Where filter track and filter support systems incorporate multiple filters, the gap between each filter shall be sealed with a gasket, and the gap between the filter and its track or support shall be sealed using gaskets that expand when the filter is removed. Filter support systems shall include a filter-to-support gasket permanently installed on the filter support, except for filter track and filter support systems that seal around the filter by means of a friction fit.

      2. 2.Filter tracks and filter supports shall be sealed to the HVAC equipment housing and ducts by a sealant or other sealing method.

      3. 3.Filter access doors shall be sealed to minimize filter bypass and air leakage into or out of the system.

      4. 4.Gaskets and seals used to comply with the requirements of this section shall be capable of effecting a seal for the anticipated life of the equipment, and the system shall be designed such that the seals are readily accessible.

      5. 5.Field- or shop-fabricated spacers shall not be installed for the purpose of replacing the intended-size filter with a smaller-size filter.

    801.3.1.4 (8.3.1.4)Building Pressure.

    The requirements in Section 801.3.1.4 (8.3.1.4) supersede the requirements in ASHRAE Standard 62.1, Section 5.9.2. Building projects shall be designed in accordance with the following subsections.

    801.3.1.4.1 (8.3.1.4.1)Mechanical Exhaust.

    Mechanical systems shall include controls capable of disabling exhaust fans and closing exhaust dampers whenever mechanical intake airflow is discontinued.

    801.3.1.4.2 (8.3.1.4.2)Exfiltration.

    Mechanical airconditioning systems with dehumidification capability shall include system controls capable of maintaining static pressure inside the building, at the top floor, equal to or greater than the static pressure outside of the building during mechanical cooling operation.

    Exceptions:

    1. 1.Where excess exhaust is required by process considerations, such as certain industrial or healthcare facilities.

    2. 2.Warehouse facilities.

    3. 3.Buildings in Climate Zones 0B, 1B, 2B, 3B, 3C, 4B, 4C, 5, 6, 7 and 8.

    801.3.1.5 (8.3.1.5)Venting of Combustion Products.

    801.3.1.5.1 (8.3.1.5.1)Vented Combustion.

    Permanently installed appliances shall have products of combustion vented to the outdoors.

    Exceptions:

    1. 1.Ovens and ranges in residential spaces.

    2. 2.Heaters certified to ANSI Z83.19/CSA 2.35, mounted greater than or equal to 10 ft (3 m) above the occupied floor.

    3. 3.Heaters certified to ANSI Z83.4/CAN 3.7.

    4. 4.Heaters certified to ANSI Z21.11.2, provided that the aggregate input rating of all such appliances does not exceed 1000 Btu/h per 1500 ft3 (700 W per 100 m3) of space volume.

    801.3.1.5.2 (8.3.1.5.2)Ranges in Residential Spaces.

    Gas and electric ranges in residential spaces shall comply with ASHRAE Standard 62.2, Section 5.1, using a range hood.

    801.3.1.6 (8.3.1.6)Humidity Control.

    The requirements in this section supersede the requirements in ASHRAE Standard 62.1, Section 5.9.1. Mechanical airconditioning and evaporative cooling systems shall be designed in accordance with Sections 801.3.1.4.1 (8.3.1.4.1) and 801.3.1.4.2 (8.3.1.4.2), as applicable.

    Exceptions:

    1. 1.Systems serving HVAC zones with construction, furnishings, and fixtures that manage liquid water and high humidity using impervious or moisture-retardant surfaces and other means.

    2. 2.Systems where performance simulation demonstrates that HVAC zone relative humidity levels during cooling do not exceed 65% rh for more than 48 consecutive hours.

    801.3.1.6.1 (8.3.1.6.1)Cooling Coils.

    HVAC systems with dehumidification capability in Climate Zones 0A, 1A, 2A, 3A, 4A, and 4C shall be designed in accordance with one of the following:

    1. a.Where recirculating systems do not include means for HVAC zone humidity sensing, such systems shall include controls capable of maintaining the average cooling-coil leaving air temperature at 53°F (12°C) or lower and shall include devices and controls capable of maintaining each HVAC zone sensible temperature set point using one of the following approaches:

      1. 1.Variable HVAC zone supply airflow rate.

      2. 2.Variable return-air bypass flow around each cooling coil serving one or more HVAC zones.

      3. 3.Variable HVAC zone supply air reheat using site-recovered energy or site solar energy.

    2. b.Where a 100% outdoor air system provides preconditioned outdoor air for ventilation, and where such systems do not include means for HVAC zone humidity sensing, the 100% outdoor air system shall include devices and controls capable of maintaining the average cooling-coil leaving air temperature at 53°F (12°C) or lower.

    3. c. Where systems include means for HVAC zone relative humidity sensing, such systems shall include devices and controls capable of limiting HVAC zone relative humidity to not exceed 65% rh for more than 48 consecutive hours.

    801.3.1.6.2 (8.3.1.6.2)Direct Evaporative Cooling.

    Direct evaporative cooling systems shall include devices and controls capable of limiting HVAC zone relative humidity to not exceed 65% rh for more than 48 consecutive hours.

    801.3.1.7 (8.3.1.7)Environmental Tobacco Smoke

    1. a.Smoking shall not be allowed inside the building. Signage stating such shall be posted within 10 ft (3 m) of each building entrance.

    2. b.Any exterior designated smoking areas shall be located a minimum of 25 ft (7.5 m) away from building entrances, outdoor air intakes, and operable windows.

    801.3.1.8 (8.3.1.8)Building Entrances.

    All building entrances shall employ an entryway floor system comprising a scraper surface, an absorption surface, and a finishing surface, in that order, in the direction of travel entering the building and in accordance with Sections 801.3.1.8.1, 801.3.1.8.2, and 801.3.1.8.3 (8.3.1.8.1, 8.3.1.8.2, and 8.3.1.8.3). Each surface shall be at least as wide as the entrance. The length shall be measured in the primary direction of travel.

    Exceptions:

    1. 1.Entrances to individual dwelling units.

    2. 2.Entrances that employ an entryway floor system that is not less than 4 ft (1.3 m) in length to provide access to spaces that are less than 3000 ft2 (300 m2) in area and that are not used as a pass-through to other parts of the building.

    3. 3.Doors the purpose of which is to meet code requirements (Informative Note: e.g., International Building Code) for means of egress and not entry into the building.

    4. 4.Entrances that are locked for use by limited authorized personnel.

    801.3.1.8.1 (8.3.1.8.1)Scraper Surface.

    The scraper surface shall be:

    1. a.immediately outside, inside, or spanning the entry;

    2. b.a minimum of 3 ft (1 m) long; and

    3. c.constructed using materials that scrape away snow, dirt, and debris.

    801.3.1.8.2 (8.3.1.8.2)Absorption Surface.

    The absorption surface shall be:

    1. a.inside,

    2. b.a minimum of 3 ft (1 m) long, and

    3. c.constructed using materials that perform both a scraping action and a moisture wicking action.

    801.3.1.8.3 (8.3.1.8.3) Finishing Surface.

    The finishing surface shall be:

    1. a.a minimum of 4 ft (1.2 m) long and

    2. b.constructed using materials that capture particles and moisture.

    801.3.1.9 (8.3.1.9) Guest Room Preoccupancy Outdoor Air Purge Cycle.

    Guest room ventilation systems controlled according to Section 701.4.3.9.4 (7.4.3.9.4) shall have an automatic preoccupancy purge cycle that shall provide outdoor air ventilation at the design ventilation rate for 60 minutes, or at a rate and duration equivalent to one air change. In guest rooms with a networked guest room control system, the purge cycle shall be completed within 60 minutes prior to the time the room is scheduled to be occupied. Where guest rooms are not connected to a networked guest room control system, the preoccupancy purge cycle shall occur daily.

    801.3.1.10 (8.3.1.10) Preoccupancy Ventilation Control.

    Ventilation systems serving zones that are not continuously occupied shall have controls designed to automatically provide outdoor air to the zones, prior to their scheduled occupancy, where the zones served by the ventilation system have been unoccupied for 24 hours or longer. This preoccupancy ventilation shall be provided continuously at the system design minimum outdoor airflow for a period of one hour prior to the expected occupancy, or at an outdoor air rate and for a time period that provides the same number of air changes as the design minimum outdoor airflow for one hour.

    If the preoccupancy ventilation period requires ventilation earlier than as required by ANSI/ASHRAE/IES Standard 90.1, Section 6.4.3, the preoccupancy ventilation start time of Section 801.3.1.7 (8.3.1.7) shall take precedence.

    Exception: Hotel and motel guest rooms subject to automatic control of HVAC and lighting as required in Chapters 7 and 8 (Sections 7 and 8).

    801.3.2 (8.3.2)Thermal Environmental Conditions for Human Occupancy.

    The building shall be designed in compliance with ANSI/ASHRAE Standard 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 that which humans find thermally acceptable, such as food storage, natatoriums, shower rooms, saunas, and drying rooms.

    801.3.3 (8.3.3)Acoustical Control.

    The provisions of this section shall govern acoustical control for the building envelope, the interior spaces within the building or structure, and the design of the related mechanical equipment and systems. School spaces identified in ANSI/ASA S12.60 shall comply with ANSI/ASA S12.60. Healthcare spaces, as defined in the FGI Guidelines, shall comply with the FGI Guidelines. All other spaces shall be designed in accordance with Sections 801.3.3.1 (8.3.3.1) through 801.3.3.5 (8.3.3.5).

    801.3.3.1 (8.3.3.1)Documentation.

    Construction documents and supplemental information necessary to verify compliance with this code, such as calculations, worksheets, laboratory test reports, field test reports, compliance forms, vendor literature, or other data, shall be reviewed by a person experienced in the field of acoustics and who shall report compliance or noncompliance with the required acoustical performance. The construction documents and any reports shall show all the pertinent data and features of the building, equipment, and systems in sufficient detail to permit a determination of compliance by the authority having jurisdiction (AHJ) and to indicate compliance with the requirements of this code.

    801.3.3.1.1 (8.3.3.1.1)Test Methods.

    The laboratory tested performance for sound transmission class (STC) for wall, partition, window, and ceiling/floor assemblies shall be tested in accordance with ASTM E90, and the laboratory tested performance for impact insulation class (IIC) for floor/ceiling assemblies shall be tested in accordance with ASTM E492. All assemblies shall be sealed according to ASTM C919 and in accordance with the laboratory tested assembly details and materials. Field tested assemblies used in the analysis shall be tested in accordance with ASTM E336 and ASTM E1007.

    801.3.3.2 (8.3.3.2)Interior Background Noise Requirements.

    The building envelope; interior spaces within the building; and building systems, including mechanical, electrical, and plumbing systems, shall be designed and constructed such that the interior sound pressure levels created by the combination of building systems noise and exterior sound sources, under normal operation with windows closed and no active sound masking systems, do not exceed the values specified in Table 801.3.3.2 (8.3.3.2). The hourly average sound pressure level Leq and maximum sound pressure level Lmax shall not exceed the values listed in Table 801.3.3.2 (8.3.3.2). Outdoor noise levels used in the design shall be provided in the construction documents.

    TABLE 801.3.3.2 (TABLE 8.3.3.2)

    MAXIMUM INTERIOR BACKGROUND SOUND PRESSURE LEVELS FROM BUILDING SYSTEMS AND EXTERIOR SOUND SOURCES a

    HOURLY AVERAGE SOUNDPRESSURE LEVEL (Leq)MAXIMUM SOUND PRESSURE LEVEL (Lmax[slow time weighting])
    ROOM TYPEdBAdBCdBAdBC
    Residential sleeping areas (nighttimeb)35604570
    Residential living and sleeping areas (daytime)40605070
    Hotel and motel guest rooms or suites and dormitories40605070
    Meeting and banquet rooms35604570
    Corridors and lobbies45656075
    Service and support areas45656075
    Enclosed offices35604570
    Conference rooms35604570
    Teleconference rooms30554065
    Open-plan offices45655575
    Courtrooms—unamplified speech35604570
    Courtrooms—amplified speech40605070
    Laboratories—minimal speech communication55756585
    Laboratories—extensive phone use and speech communication50706080
    Laboratories—group teaching40605070
    Religious—general assembly with music program30554065
    Library study and reading areas35604570
    Gymnasiums and natatoriums without speech amplification50706080
    Gymnasiums and natatoriums with speech amplification55756585
    1. a.For high-noise exterior events, refer to Section 801.3.3.2.1 (8.3.3.2.1).

    2. b.“Nighttime” is defined as the time between 10 p.m. and 7 a.m.

    801.3.3.2.1 (8.3.3.2.1)High-Noise Exterior Events.

    Hourly average sound pressure levels Leq shall be permitted to exceed the values specified in Table 801.3.3.2 (8.3.3.2) by not more than 5 dB where the excess sound pressure is attributed to high-noise exterior events that occur more than ten times per day, and by not more than 10 dB where the excess sound pressure is attributed to high-noise exterior events that occur ten times or fewer per day. Maximum sound pressure levels Lmax shall be permitted to exceed the values specified in Table 801.3.3.2 (8.3.3.2) by not more than 10 dB where the excess sound pressure is attributed to high-noise exterior events that occur more than ten times per day. Maximum sound pressure levels Lmax shall be permitted to exceed the values specified in Table 801.3.3.2 (8.3.3.2), without limitation, where the excess sound pressure is attributed to high-noise exterior events that occur ten times or fewer per day.

    801.3.3.2.2 (8.3.3.2.2)Conformance.

    Conformance to the requirements in Section 801.3.3.2 (8.3.3.2) shall be demonstrated either through the design requirements of Section 801.3.3.2.3 (8.3.3.2.3) or the testing requirements of Section 801.3.3.2.4 (8.3.3.2.4).

    801.3.3.2.3 (8.3.3.2.3)Interior Background Noise—Design.

    Conformance with the provisions of this section shall be demonstrated.

    801.3.3.2.3.1 (8.3.3.2.3.1)Building Envelope.

    The composite sound transmission class (cSTC) for the building envelope shall be calculated and used in determining the maximum interior background sound pressure levels for room types listed in Table 801.3.3.2 (8.3.3.2).

    801.3.3.2.3.2 (8.3.3.2.3.2)Interior Systems.

    Interior noise from HVAC systems shall be calculated for room types listed in Table 801.3.3.2 (8.3.3.2) and used in determining the maximum interior background sound pressure levels for the room types listed in Table 801.3.3.2 (8.3.3.2).

    801.3.3.2.3.3 (8.3.3.2.3.3)Penetrations and Fenestrations.

    All penetrations through, and fenestrations within, sound rated assemblies shall be sealed in accordance with ASTM C919 and installed per the manufacturer’s recommendations.

    801.3.3.2.3.4 (8.3.3.2.3.4)Inspection.

    Construction of acoustical items required in Sections 801.3.3.2.3 (8.3.3.2.3) through 801.3.3.2.3.3 (8.3.3.2.3.3) shall be visually inspected by an approved agency.

    801.3.3.2.4 (8.3.3.2.4)Interior Background Noise—Testing.

    Acceptance testing shall be performed in accordance with Section 1001.3.1.1.5 (10.3.1.1.5). Noise from construction activities, emergency vehicles, and sirens need not be considered.

    801.3.3.3 (8.3.3.3)Interior Sound Transmission.

    Interior wall and floor-ceiling assemblies separating adjacent interior spaces shall be designed and constructed to provide airborne sound isolation that complies with the minimum cSTC values specified in Table 801.3.3.3 (8.3.3.3). For wall and floor-ceiling assemblies separating different room types, the greater of the two cSTC values shall apply. Floorceiling assemblies separating adjacent interior spaces shall be designed and constructed to provide impact sound isolation that complies with the minimum IIC values specified in Table 801.3.3.3 (8.3.3.3). For floor-ceiling assemblies separating different room types, the IIC value associated with the room on the story below shall apply.

    TABLE 801.3.3.3 (TABLE 8.3.3.3)

    MINIMUM SOUND AND IMPACT SOUND RATINGS

    ROOM TYPEcSTC c,dIIC
    Dwelling unit (apartment, condominium, duplex, hotel guest room, etc.)5555
    Retail or restaurant5045
    Exercise, gym or pool b5550 a
    Mechanical, electrical, and elevator machinery rooms b60N/A e
    Conference and teleconference rooms5050
    Enclosed offices4545
    Open officesN/A e45
    1. a.The IIC value listed addresses footfall noise but not exercise-related vibration-borne sound. Exercise-related vibration-borne sound shall comply with the requirements of Section 801.3.3.2 (8.3.3.2).

    2. b.Minimum cSTC and IIC values are not required between adjacent rooms of the same room type.

    3. c.For operable partitions and walls containing doors, windows, or both, the minimum cSTC ratings shall be 5 less than the values listed in Table 801.3.3.3 (8.3.3.3).

    4. d.The minimum cSTC values shall be 5 less than the cSTC values in Table 801.3.3.3 (8.3.3.3) for walls between spaces and corridors and between spaces and open offices. The minimum cSTC values shall be 15 less than the cSTC values specified in Table 801.3.3.3 (8.3.3.3) for walls having doors that open to corridors or open offices.

    5. e.Not applicable.

    801.3.3.3.1 (8.3.3.3.1)Conformance.

    Conformance to the requirements in Section 801.3.3.3 (8.3.3.3) shall be demonstrated either through the design requirements of Section 801.3.3.3.2 (8.3.3.3.2) or testing requirements of Section 801.3.3.3.3 (8.3.3.3.3).

    801.3.3.3.2 (8.3.3.3.2)Interior Sound Transmission—Design.

    Wall and floor-ceiling assemblies shall comply with the following:

    1. a.Assemblies shall be required to provide sound isolation in accordance with this section and shall adjoin other intersecting sound isolating assemblies along all perimeter edges so as to provide continuity of sound isolation.

    2. b.All partitions between spaces with different uses shall be full-height partitions or shall extend to a ceiling system with a ceiling attenuation class (CAC) rating equal to or greater than the wall cSTC rating, and all floor-ceiling assemblies shall be full-span assemblies connected to the walls/partitions.

    3. c.Assemblies shall be sealed at all potential flanking paths and around all penetrations according to ASTM C919 and installed in accordance with the sealant manufacturer’s recommendations to achieve the assembly’s required performance rating.

    801.3.3.3.2.1 (8.3.3.3.2.1) Inspection.

    Construction of acoustical items required in Section 801.3.3.3.2 (8.3.3.3.2) shall be visually inspected by an approved agency.

    801.3.3.3.3 (8.3.3.3.3)Interior Sound Transmission—Testing.

    Acceptance testing shall be performed in accordance with Section 1001.3.1.1.5 (10.3.1.1.5).

    801.3.3.4 (8.3.3.4)Interior Sound Reverberation.

    The reverberation time T60 for designated spaces shall be calculated in accordance with ANSI/ASA S12.60-2010, Part 1, Annex A, for the octave bands 500, 1000, and 2000 Hz and shall not exceed the values specified in Table 801.3.3.4 (8.3.3.4) for fully furnished rooms.

    TABLE 801.3.3.4 (TABLE 8.3.3.4)

    MAXIMUM REVERBERATION TIME

    ROOM TYPEST60, sec
    Meeting and banquet rooms < 3000 ft3 (85 m3)0.8
    Meeting and banquet rooms 3000 ft3 (85 m3) up to 8000 ft3 (225 m3)1.0
    Meeting and banquet rooms > 8000 ft3 (225m3) up to 30,000 ft3 (850 m3)1.2
    Meeting and banquet rooms > 30,000 ft3 (850 m3)1.5
    Enclosed offices0.6
    Conference/teleconference rooms0.6
    Open-plan offices0.6
    Courtrooms—unamplified speech0.7
    Courtrooms—amplified speech1.0
    Testing/research labs (tittle speech communication)1.0
    Labs (extensive phone use and speech communication)0.6
    Library study and reading areas1.0
    Gymnasiums and natatoriums2.0

    801.3.3.5 (8.3.3.5)Property Line Sound Levels.

    Design and construction of mechanical systems for control of sound levels at the property line shall be in accordance with either the design provisions of Section 801.3.3.5.1 (8.3.3.5.1) or the testing provisions of Section 801.3.3.5.2 (8.3.3.5.2).

    801.3.3.5.1 (8.3.3.5.1)Property Line Sound Levels—Design.

    HVAC and other mechanical systems on the premises shall be designed to have a maximum hourly average sound pressure level Leq less than or equal to the values in Table 801.3.3.5.1 (8.3.3.5.1) at grade level and up to the highest potential window location on all property lines adjoining receiving properties. When generators are used for emergency power only, they shall be exempt from this criterion.

    TABLE 801.3.3.5.1 (TABLE 8.3.3.5.1)

    PROPERTY LINE MAXIMUM SOUND LEVELS—PRESCRIPTIVE OPTION

    INITIATING PROPERTYRECEIVING PROPERTYHOURLY AVERAGE SOUND PRESSURE LEVEL Leq
    All, except factory or industrialAll, except factory or industrial50
    Factory or industrialAll, except factory or industrial55
    Factory or industrialFactory or industrial75

    801.3.3.5.2 (8.3.3.5.2)Property Line Sound Levels—Testing.

    Sound produced by HVAC or other mechanical systems on the premises shall not exceed the values in Table 801.3.3.5.2 (8.3.3.5.2) at grade level and up to the highest window location on all property lines adjoining receiving properties. Where a generator is used only to provide emergency power, and all periodic operational testing is performed between the hours of 7:00 a.m. and 10:00 p.m., the sound produced by emergency generator during nighttime hours need only comply with the daytime maximum sound level values specified in Table 801.3.3.5.2 (8.3.3.5.2). Acceptance testing shall be performed in accordance with Section 1001.3.1.1.5.1.3 (10.3.1.1.5.1.3).

    TABLE 801.3.3.5.2 (TABLE 8.3.3.5.2)

    PROPERTY LINE MAXIMUM SOUND LEVELS—TESTED PERFORMANCE OPTION

    INITIATING PROPERTYRECEIVING PROPERTYHOURLY AVERAGE SOUND PRESSURE LEVEL Leq
    DAYTIMENIGHTTIME
    7:00 A.M. TO 10:00 P.M.10:00 P.M. TO 7:00 A.M.
    All, except factory or industrialAll, except factory or industrial6050
    Factory or industrialAll, except factory or industrial6555
    Factory or industrialFactory or industrial7575

    801.3.4 (8.3.4)Soil-Gas Control.

    Soil-gas entry into enclosed spaces that are immediately above crawlspaces, slabs-on-grade, and basement slabs shall be controlled in accordance with Sections 801.3.4.1 (8.3.4.1) or 801.3.4.2 (8.3.4.2).

    Exceptions:

    1. 1.Buildings or portions thereof that are not routinely occupied, such as warehouses and parking structures.

    2. 2.Ventilated garages that comply with ANSI/ASHRAE Standard 62.1, Sections 5.15 and 6.5.

    801.3.4.1 (8.3.4.1)Soil-Gas Control Systems.

    801.3.4.1.1 (8.3.4.1.1)Soil-Gas Barriers.

    Soil-gas retarder systems shall be provided and shall comply with all of the following:

    1. a.Earthen floors in basements and enclosed crawlspaces shall be covered with a soil-gas retarder membrane. Such membrane shall be sealed to the foundation at the edges. Soil-gas retarder membranes or systems shall be placed between slab floors and the base course gaspermeable layer required by Section 801.3.4.1.2 (8.3.4.1.2). Soil-gas retarder materials shall meet or exceed the durability requirements of ASTM E1745, and the installation shall comply with ASTM E1643. Damp-proofing or waterproofing materials shall be installed on the exterior surface of foundation walls and shall extend from the top of the footing to above grade.

    2. b.Joints in concrete around the perimeter of each poured slab section shall be permanently sealed with closed-cell gasket materials or equivalent methods that retain closure after the slab has cured.

    3. c.Openings in slab floors; below-grade masonry walls; and membranes, such as those for plumbing, ground water control systems, soil vent pipes, electrical, mechanical piping, and structural supports, shall be sealed at the penetration with caulk that complies with ASTM C920 class 25 or higher equivalent closed-cell gasket materials or other equivalent method.

    4. d.Sumps shall be covered with a rigid lid that is mechanically fastened and sealed with a gasket or caulk that will allow removal of the lid for maintenance.

    5. e.Hollow masonry unit walls shall be designed and constructed as follows:

      1. 1.The first course of masonry units bearing on a footing shall be laid with a full mortar bedding and shall be solid units or fully grouted masonry units.

      2. 2.Where portions of masonry units are below grade and in contact with earth, the course of masonry units that is at or partially below grade shall be made of solid masonry units or fully grouted masonry units. Such course of masonry units need not change elevation to compensate for lower-grade elevations along the building perimeter. Openings in walls that are below such course of solid or fully grouted masonry units, such as window and door openings, shall be surrounded by solid or fully grouted masonry units.

    801.3.4.1.2 (8.3.4.1.2)Gas-Permeable Layer and Soil-Gas Conveyance.

    There shall be a continuous gas-permeable layer under each slab-on-grade and basement slab for the entire area of the slab and under each membrane installed over earth for the entire area of the membrane. Perforated pipe, geotextile matting, or soil-gas collection pits shall be installed below the slab or membrane and shall be connected to exhaust vent pipe as specified in Section 801.3.4.1.3 (8.3.4.1.3). The gas-permeable layer and soil-gas conveyance pipe shall comply with Table 801.3.4.1.2 (8.3.4.1.2) and (a), (b), or (c) as applicable.

    1. a.Stone Aggregate Layer. The gas-permeable layer shall be a uniform layer not less than 4 in. (0.1 m) in depth and shall consist of gravel or crushed stone that meets ASTM C33 requirements for size numbers 5, 56, 57, or 6. Vent pipe openings to unobstructed interstices between stones within the gas-permeable layer shall not be less than the equivalent values indicated in Table 801.3.4.1.2 (8.3.4.1.2).

    2. b.Small Stone, Sand, and Soil. The gas-permeable layer shall be a uniform layer not less than 4 in. (0.10 m) in depth that consists of any of the following:

      1. 1.Small stone aggregates classified in ASTM C33 as size numbers 467,67,7, or 8.

      2. 2.Sand classified in ASTM C33 as size number 9.

      3. 3.Soil that contains less than 35% sand, rock fragment fines, clay, and silt. Such clay and silt shall consist of not more than 10% high-plasticity clay or silt.

      Perforated pipe or geotextile drainage matting shall be placed at distances not farther than 20 ft (6 m) apart and not farther than 10 ft (3 m) away from foundation walls or other surfaces that surround the gas-permeable layer. Perforated pipe shall be surrounded by not less than 4 in. (0.10 m) of gas-permeable aggregates that meet ASTM C33 requirements for size numbers 5, 56, 57, or 6. The minimum length and soil-gas inlet openings in the perforated pipe and geotextile matting shall not be less than equivalent values indicated in Table 801.3.4.1.2 (8.3.4.1.2).

    3. c.Crawlspace Membranes. Perforated pipe or equivalent material not less than 10 ft (3 m) in length and 3 in. (0.08 m) in nominal diameter shall be provided under the membrane. The configuration shall allow air movement under the entire area of the membrane.

    TABLE 801.3.4.1.2 (TABLE 8.3.4.1.2)

    SOIL-GAS CONVEYANCE COMPONENTS

    SYSTEM VENT PIPENOMINAL DIAMETERMINIMUMDIAMETER OF PITS aMINIMUM LENGTH OFPERFORATED PIPE ORGEOTEXTILE MATTING b
    3 in. (0.08 m)12 in. (0.30 m) diameter pit18 ft (5.4 m)
    4 in. (0.10 m)16 in. (0.40) diameter pit32 ft (10 m)
    6 in. (0.15 m)24 in. (0.60 m) diameter pit71 ft (22 m)
    1. a.Pits shall not be less than 4 in. (0.10 m) in depth.

    2. b.Openings in perforated pipe and geotextile matting shall not be less than 1.0 in.2/ft (21 cm2/m) of pipe or matting length.

    801.3.4.1.2.1 (8.3.4.1.2.1)Soil-Gas Conveyance Clearance and Dimension.

    Geotextile mats and perforated pipe shall not be less than 12 in. (0.3 m) and not farther than 10 ft (3 m) from foundation walls or other surfaces that surround the gas-permeable layer. Soil-gas inlet openings into the geotextile mats and perforated pipe shall have an area of not less than 1.0 in.2/ft (21 cm2/m) of length. The airway path within geotextile mats and perforated pipe shall not be less than the nominal equivalent area of 3 in. (0.08 cm) pipe inner diameter. Pipe materials below slabs and membranes shall be configured to drain collected water within piping.

    801.3.4.1.2.2 (8.3.4.1.2.2)Connections to Exhaust Vent Pipes.

    Exhaust vent piping, as specified in Section 801.3.4.1.3 (8.3.4.1.3), shall connect to soil-gas inlet configurations within the gas-permeable layer and extend not less than 2 ft (0.6 m) above the top of the slab or membrane. Such pipes shall be temporarily capped or otherwise closed during construction to prevent debris from entering the pipes. The pipe that extends above the slab or membrane shall be labeled with the words “radon vent” or “soil-gas vent” in the prevailing language at the location.

    801.3.4.1.3 (8.3.4.1.3)Soil-Gas Exhaust Vent Pipe.

    Soil-gas exhaust vent piping shall be provided as follows:

    1. a.Pipe Placement. Nonperforated Schedule 40 pipe, as defined by ASTM D1785, shall extend from within the gas-permeable layers to the point of exhaust above the roof. The vent pipe size shall not be reduced at any point between its connection to the gas permeable layers and the exhaust terminal above the roof. Such piping shall be labeled on each floor level of the building with the words “radon vent” or “soil-gas vent” in the prevailing language at the location.

    2. b.Multiple Vented Areas. Where interior footings divide a gas-permeable layer into two or more unconnected areas, such areas shall be interconnected by piping below the slab or membrane or above the slab or membrane. Such piping shall be nonperforated and of a size indicated in Table 801.3.4.1.3 (8.3.4.1.3).

    3. c.Provision for Fan. Soil-gas venting systems shall include a fan or a dedicated space for the future installation of a fan. The fan and soilgas vent piping on the discharge side of the fan shall not be installed within or under occupied spaces. A dedicated space having a vertical height of not less than 48 in. (1.2 m) and a diameter of not less than 21 in. (0.53 m) shall be provided in the attic or other interior area to accommodate the installation of a fan. The fan inlet and outlet vent pipes shall be centered in such dedicated space. An electrical supply for the fan shall be provided within 6 ft (1.8 m) of the fan location.

    4. d.Vented Area. The maximum foundation area served by a soil-gas exhaust vent pipe shall be determined in accordance with Table 801.3.4.1.3 (8.3.4.1.3).

    Exception: Where inspections verify compliance with Sections 801.3.4.1.1 (8.3.4.1.1) through 801.3.4.1.3 (8.3.4.1.3), the maximum vented area per vent pipe indicated in Table 801.3.4.1 (8.3.4.1) shall be increased by 40%. Where the soil-gas barrier consists of a spray-applied vapor barrier or a geomembrane that provides a homogeneous closure, the maximum vented area per vent pipe shall be increased by an additional 20%.

    TABLE 801.3.4.1.3 (TABLE 8.3.4.1.3)

    VENT PIPE DIAMETER PER VENTED AREA

    VENT PIPE DIAMETERMAXIMUM VENTED AREA PER VENT PIPE
    3 in. (0.08 m)2500 ft2 (230 m2)
    4 in. (0.10 m)4500 ft2 (420 m2)
    6 in. (0.15 m)10,000 ft2 (1000 m2)

    801.3.4.2 (8.3.4.2)Alternative Methods of Soil-Gas Control.

    A soil-gas control system shall be provided, and such system shall be clearly identified or otherwise noted on construction documents and shall be approved by a qualified soil-gas professional and the building project FPT provider.

    801.3.5 (8.3.5)Lighting Quality.

    The interior lighting and lighting controls shall be installed to meet the requirements of Sections 801.3.5.1 (8.3.5.1) and 801.3.5.2 (8.3.5.2).

    801.3.5.1 (8.3.5.1)Enclosed Office Spaces.

    Lighting for at least 90% of enclosed office spaces with less than 250 ft2 (23.3 m2) of floor area shall comply with at least one of the following:

    1. a.Provide multilevel lighting control.

    2. b.Provide bilevel lighting control and separate task lighting.

    801.3.5.2 (8.3.5.2)Multioccupant Spaces.

    Lighting for conference rooms, meeting rooms, multipurpose rooms, gymnasiums, auditoriums, ballrooms, cafeterias, classrooms, and other training or lecture rooms shall be provided with multilevel lighting control. Lighting settings or the lighting controlled by each manual control shall be labeled at the control devices. The lighting in gymnasiums, auditoriums, ballrooms, and cafeterias shall also consist of at least two separately controlled groups of luminaires.

    801.3.6 (8.3.6)Moisture Control.

    Either a dynamic heat and moisture analysis, in accordance with ANSI/ASHRAE Standard 160, or steady-state water vapor transmission analysis, in accordance with Sections 801.3.6.1 (8.3.6.1) and 801.3.6.2 (8.3.6.2), shall be performed on above-grade portions of the building envelope and on interior partitions as described in Section 801.3.6.2 (8.3.6.2). Conditions conducive to condensate formation, as demonstrated by analysis, shall not occur at any location within the building envelope or partition components or on the interior side of surfaces not specifically designed and constructed to manage moisture.

    Exception: Where analysis indicates that incidental condensate occurs in components engineered to allow or manage such condensate without damage to the building envelope components.

    801.3.6.1 (8.3.6.1)Exterior Building Envelope.

    The analysis shall be conducted using the average of at least ten consecutive years of weather data for the outdoor air temperature for the warmest three months of the year (summer condition) and the outdoor air temperature for the coldest three months of the year (winter condition). The analysis shall include all building envelope components, including interior wall finishes of the exterior walls.

    801.3.6.2 (8.3.6.2)Humid Spaces.

    A separate analysis shall be performed in spaces where process or occupancy requirements dictate dew-point conditions that are unique with respect to other spaces in the building, such as kitchens, water therapy rooms, swimming-pool enclosures, ice rink enclosures, shower rooms, locker rooms, operating rooms in health care facilities, and exhibit areas in museums.

    801.3.6.2.1 (8.3.6.2.1)

    For exterior building envelope components of humid spaces, the analysis shall use the outdoor air temperature conditions described in Section 801.3.6.1 (8.3.6.1).

    801.3.6.2.2 (8.3.6.2.2)

    For walls, floors, and ceilings between occupied spaces and adjacent spaces, the analysis shall be performed using design summer (cooling) conditions and design winter (heating) conditions of both types of conditioned space.

    Exception:Spaces and their individual mechanical systems that are designed to control condensation and moisture accumulation in the adjacent building envelope, walls, or ceilings.

    801.3.6.3 (8.3.6.3)Flashing of Fenestration, Door Assemblies, Mechanical Equipment, and Other Penetrations of Building Envelope.

    Flashing or sealants shall be installed around fenestration, door assemblies, and penetrations associated with mechanical equipment and utility services, except where there is a mechanism for drainage to the outdoors or where the materials are designed for long-term contact with water.

    801.3.7 (8.3.7)Glare Control.

    View fenestration for the spaces listed in Table 801.4.1.2A (8.4.1.2A) shall comply with this section.

    View fenestration shall have one or more operable glare control devices capable of reducing the specular visible transmittance of the fenestration assembly to 3% or less. Such glare control devices shall allow an occupant or control system to change the device’s position or light transmission level in order to address glare in the space. Operable glare control devices include movable interior window blinds, curtains, and shades; movable exterior louvers, screens, awnings, shades, and blinds; and dynamic glazing. Where fabric shades are used, the openness factor, also known as “direct-direct transmittance,” shall be tested according to Standard EN14500.

    Exceptions:

    1. 1.For buildings located greater than 20 degrees latitude north or south of the equator, view fenestration oriented within 10 degrees of true north in northern hemisphere locations or within 10 degrees of true south in southern hemisphere location.

    2. 2.Where permanent interior or exterior obstructions, such as buildings, structures, overhangs, and fins, have a specular visible transmittance of not greater than 3% and block a direct beam of sunlight from passing through the view fenestration at a point in the middle of the view fenestration both horizontally and vertically, at the peak solar altitude and four hours before and after the peak solar altitude on the summer solstice and the spring equinox as determined by sun-angle studies.

    3. 3.Spaces that have an annual sunlight exposure of not more than 93 fc (1000 lux) of direct sunlight illumination for more than 250 hours per year for less than 3% of the floor area.

    801.3.8 (8.3.8)Occupant Override.

    Occupants shall have the capability to temporarily override automatic methods of glare control for periods not exceeding two hours.

    801.4 (8.4)Prescriptive Option.

    801.4.1 (8.4.1)Daylighting.

    801.4.1.1 (8.4.1.1)Daylighting in Large Spaces Directly under a Roof and Having High Ceilings.

    Enclosed spaces, including conditioned and unconditioned spaces, meeting all of the following criteria, shall comply with Sections 801.4.1.1.1, 801.4.1.1.2 and 801.4.1.1.3 (8.4.1.1.1, 8.4.1.1.2 and 8.4.1.1.3):

    1. a.The space is in a building with three stories or fewer above grade.

    2. b.The space area is greater than 2500 ft2 (232 m2).

    3. c.The space is located directly under a roof, and average ceiling heights are greater than 15 ft (4.6 m).

    Exceptions:

    1. 1.Spaces in buildings located in Climate Zones 7 or 8.

    2. 2.Auditoria, motion picture theaters, performing arts theaters, museums, places of worship, and refrigerated warehouses.

    3. 3.Enclosed spaces where documentation shows that existing structures or natural objects block direct sunlight on at least 50% of the roof over the enclosed space at all three of the following times on the date of the spring equinox: three hours before solar noon (peak solar altitude), at solar noon, and three hours after solar noon.

    801.4.1.1.1 (8.4.1.1.1)Minimum Daylight Area.

    Not less than 50% of the floor area shall be in the daylight area as defined in Chapter 3 (Section 3). For the purposes of Section 801.4.1.1.1 (8.4.1.1.1), the definition of daylight area shall be modified such that partitions and other obstructions that are less than the ceiling height are disregarded. Daylight areas shall be under skylights, under roof monitors, or in the primary or secondary sidelighted areas and shall meet not less than one of the following requirements:

    1. a.The combined area of the skylights within the space shall not be less than 3% of the calculated daylight area under skylights.

    2. b.The space shall have a skylight effective aperture of not less than 1%.

    3. c.The combined area within the space of any vertical fenestration in roof monitors shall not be less than 20% of the calculated daylight area under roof monitors.

    4. d.Primary sidelighted areas shall have a sidelighting effective aperture of not less than 0.15.

    5. e.Secondary sidelighted areas shall have a sidelighting effective aperture of not less than 0.30.

    801.4.1.1.2 (8.4.1.1.2)Visible Transmittance (VT) of Skylights and Roof Monitors.

    The visible transmittance of skylights and roof monitors for daylight areas used to comply with Section 801.4.1.1.1 (8.4.1.1.1) shall not be less than 0.40. For dynamic glazing, the highest-labeled VT shall be used for compliance with this section.

    Exception: Enclosed spaces that have a skylight effective aperture of not less than 1%.

    801.4.1.1.3 (8.4.1.1.3) Skylight Optical Diffusion Characteristics.

    Skylights used to comply with Section 801.4.1.1.1 (8.4.1.1.1) shall have a glazing material or diffuser that has a measured haze value greater than 90% when tested according to ASTM D1003 or other test method approved by the AHJ.

    Exceptions:

    1. 1.Skylights with a measured haze value less than or equal to 90% and having a combined area not in excess of 5% of the total skylight area.

    2. 2.Tubular daylighting devices having a diffuser.

    3. 3.Skylights designed to prevent direct sunlight from entering the occupied space below during occupied hours.

    4. 4.Skylights in transportation terminals and concourses, sports arenas, convention centers, atria, and shopping malls.

    801.4.1.2 (8.4.1.2) Minimum Sidelighting Effective Aperture for Office Spaces and Classrooms.

    The spaces listed in Table 801.4.1.2A (8.4.1.2A) shall comply with items (a), (b) and (c).

    1. a,The north-, south-, and east-facing façades shall have a minimum sidelighting effective aperture as prescribed in Table 801.4.1.2B (8.4.1.2B).

    2. b,For all façades, the combined width of the primary sidelighted areas shall not be less than 75% of the length of the façade wall.

    3. c.Opaque interior surfaces in daylight areas shall have average visible light reflectances greater than or equal to 80% for ceilings, 40% for partitions higher than 60 in. (1.5 m), and 60% for walls.

    Exceptions:

    1. 1.Spaces not adjacent to an exterior wall.

    2. 2.A space that would have tasks or activities requiring routine dark conditions for more than four daytime hours per day.

    3. 3.Spaces covered by and in compliance with Section 801.4.1.1 (8.4.1.1) without the use of any exception.

    4. 4.Daylight areas where the height of existing adjacent structures above the window is not less than twice the distance between the window and the adjacent structures, measured from the top of the glazing.

    5. 5.Existing buildings undergoing alteration, repair, relocation, or a change in occupancy.

    TABLE 801.4.1.2A (TABLE 8.4.1.2A)

    DAYLIT SPACES

    Classroom/training room
    Conference /meeting/multipurpose room except in convention centers
    Lounge/breakroom
    Enclosed office and open plan office
    Library reading area
    Patient rooms and physical therapy rooms within a healthcare facility

    TABLE 801.4.1.2B (TABLE 8.4.1.2B)

    MINIMUM SIDELIGHTING EFFECTIVE APERTURE

    CLIMATE ZONEMINIMUM SIDELIGHTINGEFFECTIVE APERTURE
    0, 1, 2, 3A, 3B0.10
    3C, 4, 5, 6, 7, 80.15

    801.4.1.3 (8.4.1.3) Shading for Offices.

    For office spaces 250 ft2 (23 m2) and larger, each façade shall be designed with a shading projection factor (PF). The PF shall not be less than 0.5 for the first story above grade and 0.25 for other above-grade stories. Shading is allowed to be external or internal using the interior PF. Shading devices shall be limited to the following:

    1. a.Louvers, sun shades, light shelves, and any other permanent device. Any vertical fenestration that employs a combination of interior and external shading is allowed to be separated into multiple segments for compliance purposes. Each segment shall comply with the requirements for either external or interior PF.

    2. b.Building self-shading through roof overhangs or recessed windows.

    Exceptions:

    1. 1.Facades facing within 45 degrees of true north in the northern hemisphere or facades facing 45 degrees from true south in the southern hemisphere.

    2. 2.Translucent panels and glazing systems with a measured haze value greater than 90% when tested according to ASTM D1003 or other test method approved by the AHJ, and that are entirely 8 ft (2.5 m) above the floor do not require external shading devices.

    3. 3.Where equivalent shading of the vertical fenestration is provided by buildings, structures, geological formations, or permanent exterior projections that are not horizontal, as determined by sun-angle studies at the peak solar altitude on the summer solstice and three hours before and after the peak solar altitude on the summer solstice.

    4. 4.Vertical fenestration with automatically controlled shading devices in compliance with Exception (2) of Section 701.4.2.5 (7.4.2.5).

    5. 5.Vertical fenestration with automatically controlled dynamic glazing in compliance with Exception (3) of Section 701.4.2.5 (7.4.2.5).

    6. 6.Existing buildings undergoing alteration, repair, relocation, or a change in occupancy.

    801.4.2 (8.4.2) Materials.

    Reported emissions or volatile organic compound (VOC) contents specified in the following subsections shall be from a representative product sample and determined with each product reformulation or at a minimum of every three years. Products certified under third-party certification programs as meeting the specific emission or VOC content requirements listed in the following subsections are exempted from this threeyear testing requirement but shall meet all the other requirements as listed.

    801.4.2.1 (8.4.2.1) Adhesives and Sealants.

    Products in this category include carpet, resilient, and wood flooring adhesives; base cove adhesives; ceramic tile adhesives; drywall and panel adhesives; aerosol adhesives; adhesive primers; acoustical sealants; firestop sealants; HVAC air duct sealants; sealant primers; and caulks. All adhesives and sealants used on the interior of the building (defined as inside of the weatherproofing system and applied on-site) shall comply with the requirements of either Section 801.4.2.1.1 (8.4.2.1.1) or 801.4.2.1.2 (8.4.2.1.2).

    801.4.2.1.1 (8.4.2.1.1) Emissions Requirements.

    Emissions shall be determined according to CDPH/EHLB/Standard Method V1.1 (commonly known as California Section 01350) and shall comply with the limit requirements for either office or classroom spaces, regardless of the space type. The emissions testing shall be performed by an ISO/IEC 17025 accredited laboratory that has CDPH/EHLB/Standard Method V.1.1, USEPA Method TO-17, and ASTM Standard Method D5197 within the scope of its accreditation. Third-party certifiers shall be accredited to ISO/IEC 17065 and have the relevant certification program in the scope of accreditation.

    801.4.2.1.2 (8.4.2.1.2)VOC Content Requirements.

    The VOC content of adhesives, sealants, and sealant primers shall be determined and limited in accordance with SCAQMD Rule 1168. HVAC duct sealants shall be classified as “Other” category within the SCAQMD Rule 1168 sealants table.

    The VOC content of aerosol adhesives shall be determined and limited in accordance with Green Seal Standard GS-36, Section 3.

    Exceptions: The following solvent welding and sealant products are not required to meet the emissions or VOC content requirements.

    1. 1.Cleaners, solvent cements, and primers used with plastic piping and conduit in plumbing, fire suppression, and electrical systems.

    2. 2.HVAC air-duct sealants when the air temperature of the space in which they are applied is less than 40°F (4.5°C).

    801.4.2.2 (8.4.2.2)Paints and Coatings.

    Products in this category include anticorrosive coatings, basement specialty coatings, concrete/masonry sealers, concrete curing compounds, dry fog coatings, faux-finishing coatings, fire-resistive coatings, flat and nonflat topcoats, floor coatings, graphic arts (sign) coatings, hightemperature coatings, industrial maintenance coatings, low-solids coatings, mastic texture coatings, metallic pigmented coatings, multicolor coatings, pretreatment wash primers, primers, reactive penetrating sealers, recycled coatings, shellacs (clear and opaque), specialty primers, stains, stone consolidants, swimmingpool coatings, tub- and tile-refining coatings, undercoaters, waterproofing membranes, wood coatings (clear wood finishes), wood preservatives, and zinc primers. Paints and coatings used on the interior of the building (defined as inside of the weatherproofing system and applied on-site) shall comply with either Section 801.4.2.2.1 (8.4.2.2.1) or 801.4.2.2.2 (8.4.2.2.2).

    801.4.2.2.1 (8.4.2.2.1)Emissions Requirements.

    Emissions shall be determined according to CDPH/EHLB/Standard Method V1.1 (commonly known as California Section 01350) and shall comply with the limit requirements for either office or classroom spaces, regardless of the space type. The emissions testing shall be performed by an ISO/IEC 17025 accredited laboratory that has CDPH/EHLB/Standard Method V.1.1, USEPA Method TO-17, and ASTM Standard Method D5197 within the scope of its accreditation. Third-party certifiers shall be accredited to ISO/IEC 17065 and have the relevant certification program in the scope of accreditation.

    801.4.2.2.2 (8.4.2.2.2)VOC Content Requirements.

    1. a.The VOC content for flat and nonflat coatings, nonflat high-gloss coatings, specialty coatings, basement specialty coatings, concrete/masonry sealers, fire-resistive coatings, floor coatings, low-solids coatings, primers, sealers and undercoaters, rust preventative coatings, shellacs (clear and opaque), stains, wood coatings, reflective wall coatings, varnishes, conjugated oil varnish, lacquer, and clear brushing lacquer shall be determined and limited in accordance with Green Seal Standard GS-11.

    2. b.The VOC content for concrete curing compounds, dry fog coatings, faux finishing coatings, graphic arts coatings (sign paints), industrial maintenance coatings, mastic texture coatings, metallic pigmented coatings, multicolor coatings, pretreatment wash primers, reactive penetrating sealers, recycled coatings, specialty primers, wood preservatives, and zinc primers shall be determined and limited in accordance with the California Air Resources Board Suggested Control Measure for Architectural Coatings or SCAQMD Rule 1113r.

    3. c.The VOC content for high-temperature coatings, stone consolidants, swimming-pool coatings, tub- and tile-refinishing coatings, and waterproofing membranes shall be determined and limited in accordance with the California Air Resources Board Suggested Control Measure for Architectural Coatings.

    801.4.2.3 (8.4.2.3) Floor Covering Materials.

    Emissions of floor covering materials installed in the building interior, and each product layer within a flooring system containing more than one distinct product layer, shall be individually determined according to CDPH/EHLB/Standard Method V1.1 (commonly known as California Section 01350) and shall comply with the limit requirements for either office or classroom spaces, regardless of the space type. The emissions testing shall be performed by an ISO/IEC 17025 accredited laboratory that has CDPH/EHLB/Standard Method V.1.1, USEPA TO- 17, and ASTM Standard Method D5197 within the scope of its accreditation. Third-party certifiers shall be accredited to ISO/IEC 17065 and have the relevant certification program in the scope of accreditation.

    801.4.2.3.1 (8.4.2.3.1)Deemed to Comply.

    Floor covering materials that are composed of materials listed in Table 801.4.2.3.1 (8.4.2.3.1) shall be deemed to comply with the requirements of Section 801.4.2.3 (8.4.2.3). Where these products include integral organic-based surface coatings, binders, or sealants, or are installed using adhesives, sealants, paints, or coatings, those products shall be subject to other requirements of Section 801.4.2 (8.4.2).

    TABLE 801.4.2.3.1 (TABLE 8.4.2.3.1)

    FLOOR COVERING DEEMED TO COMPLY WITH VOC EMISSION LIMITS

    Ceramic and concrete tile
    Natural stone
    Gypsum plaster
    Clay masonry
    Concrete masonry
    Concrete
    Metal

    801.4.2.4 (8.4.2.4) Composite Wood, Wood Structural Panel, and Agrifiber Products.

    Composite wood, wood structural panel, and agrifiber products used on the interior of the building (defined as inside of the weatherproofing system) shall contain no added urea-formaldehyde resins. Laminating adhesives used to fabricate on-site and shop-applied composite wood and agrifiber assemblies shall contain no added urea-formaldehyde resins. Composite wood and agrifiber products are defined as follows: particleboard, medium density fiberboard (MDF), wheatboard, strawboard, panel substrates, and door cores. Materials considered furniture, fixtures, and equipment (FF&E) are not considered base building elements and are not included in this requirement. Emissions for products covered by this section shall be determined according to, and shall comply with, one of the following:

    1. a.Third-party certification shall be submitted indicating compliance with the California Air Resource Board’s (CARB) regulation, Airborne Toxic Control Measure to Reduce Formaldehyde Emissions from Composite Wood Products. Third-party certifier shall be approved by CARB.

    2. b.CDPH/EHLB/Standard Method V1.1 (commonly referred to as California Section 01350) and shall comply with the limit requirements for either office or classroom spaces, regardless of the space type.

    Exceptions: Structural panel components such as plywood, particle board, wafer board, and oriented strand board identified as “EXPOSURE 1,” “EXTERIOR,” or “HUD-APPROVED” are considered acceptable for interior use.

    801.4.2.5 (8.4.2.5)Office Furniture Systems and Seating.

    Office furniture systems and seating installed prior to occupancy shall comply with the requirements of both Sections 801.4.2.5.1 (8.4.2.5.1) and 801.4.2.5.2 (8.4.2.5.2), based on testing according to ANSI/BIFMA M7.1.

    801.4.2.5.1 (8.4.2.5.1)

    At least 95% of the total number of installed office furniture system workstations, and at least 95% of the total number of seating units installed, shall comply with ANSI/BIFMA X7.1.

    801.4.2.5.2 (8.4.2.5.2)

    At least 50% of the total number of installed office furniture system workstations, and at least 50% of the total number of seating units installed, shall comply with Section 7.6.2 of ANSI/BIFMA e3.

    801.4.2.6 (8.4.2.6)Ceiling and Wall Assemblies and Systems.

    Ceiling and wall assemblies and systems include acoustical treatments, ceiling panels and tiles, gypsum panel products, tackable wall panels and coverings, wall coverings, and wall and ceiling paneling and planking. Emissions from these assemblies and systems shall be determined according to CDPH/EHLB/Standard Method V1.1 (commonly known as California Section 01350) and shall comply with the limit requirements for either office or classroom spaces, regardless of the space type. The emissions testing shall be performed by an ISO/IEC 17025 accredited laboratory that has CDPH/EHLB/Standard Method V.1.1, USEPA TO-17, and ASTM Standard Method D5197 within the scope of its accreditation. Third-party certifiers shall be accredited to ISO/IEC 17065 and have the relevant certification program in the scope of accreditation.

    801.4.2.6.1 (8.4.2.6.1)Deemed to Comply.

    Ceiling and wall assemblies and systems that are composed of materials listed in Table 801.4.2.6.1 (8.4.2.6.1) shall be deemed to comply with the requirements of Section 801.4.2.6 (8.4.2.6). Where these products include integral organicbased surface coatings, binders, or sealants, or are installed using adhesives, sealants, paints, or coatings, those products shall be subject to other requirements of Section 801.4.2 (8.4.2).

    TABLE 801.4.2.6.1 (TABLE 8.4.2.6.1)

    CEILING AND WALL PRODUCTS DEEMED TO COMPLY WITH VOC EMISSION LIMITS

    Ceramic and concrete tile
    Natural stone
    Gypsum plaster
    Clay masonry
    Concrete masonry
    Concrete
    Metal

    801.4.2.7 (8.4.2.7)Insulation.

    Emissions shall be determined according to CDPH/EHLB/Standard Method V1.1 (commonly known as California Section 01350) and shall comply with the limit requirements for either office or classroom spaces, regardless of the space type. The emissions testing shall be performed by an ISO/IEC 17025 accredited laboratory that has CDPH/EHLB/Standard Method V.1.1, USEPA TO-17, and ASTM Standard Method D5197 within the scope of its accreditation. Thirdparty certifiers shall be accredited to ISO/IEC 17065 and have the relevant certification program in the scope of accreditation.

    801.4.3 (8.4.3)Lighting for Presentations.

    Luminaires that are located entirely or partially within 3 ft (0.9 m) horizontally of any permanently installed presentation surfaces, including whiteboards, blackboards, chalkboards, and screens for projection units, shall be controlled separately from all other luminaires in the space and be capable of being turned off. Control settings for these luminaires shall be labeled at the control device. At least one luminaire shall be located entirely or partially within 3 ft (0.9 m) horizontally of each permanently installed whiteboard, blackboard, or chalkboard that is not self-illuminated.

    801.5 (8.5)Performance Option.

    801.5.1 (8.5.1)Daylight Simulation.

    For the spaces listed in Table 801.4.1.2A (8.4.1.2A), and any spaces required to have daylighting in accordance with Section 801.4.1.1 (8.4.1.1), the total floor area shall be calculated, and computer modeling shall be used to determine that the requirements specified in Sections 801.5.1.1 (8.5.1.1) and 801.5.1.2 (8.5.1.2) are met. Computer models shall use an hourly simulation and shall adhere to the modeling protocols described in IES LM 83 for spatial daylight autonomy (sDA) calculations in Section 801.5.1.1 (8.5.1.1) and annual sunlight exposure (ASE) calculations in Section 801.5.1.2 (8.5.1.2).

    801.5.1.1 (8.5.1.1)Minimum Daylight.

    The computed area-weighted sDA shall not be less than 40%.

    The sDA within each space shall be calculated in accordance with the methodology of IES LM 83. Calculations shall be made on the basis of 28 fc (300 lux) for all spaces, with the exception of the following space types, which shall be calculated on the basis of 14 fc (150 lux): health-care patient rooms, post-office sorting areas, gymnasia, big box retail, transportation facility terminal ticket counters, airport concourses, and nonrefrigerated warehouses.

    Exceptions:

    1. 1.A space used for tasks or activities requiring routine dark conditions for more than 4 daytime hours per day.

    2. 2.A space where the height of existing facing structures above the vertical fenestration is not less than twice the distance between the vertical fenestration and facing structures, measured from the top of the glazing.

    801.5.1.2 (8.5.1.2)Excessive Sunlight.

    The ASE, calculated with a threshold of 93 fc (1000 lux) and 250 hours, shall not exceed 20% of the floor area.

    Exceptions:

    1. 1.Spaces less than 250 ft2 (23 m2).

    2. 2.Vertical fenestration with automatically controlled shading devices in compliance with Section 701.4.2.5 (7.4.2.5), Exception (2).

    3. 3.Vertical fenestration with automatically controlled dynamic glazing in compliance with Section 701.4.2.5 (7.4.2.5), Exception (3).

    801.5.2 (8.5.2)Materials.

    The emissions of all the materials listed below and used within the building (defined as inside of the weatherproofing system and applied on-site) shall be modeled for individual VOC concentrations. The sum of each individual VOC concentration from the materials listed below shall be shown to be in compliance with the limits as listed in CDPH/EHLB/Standard Method V1.1 (commonly referred to as California Section 01350), Section 4.3, and shall be compared to 100% of its corresponding listed limit. In addition, the modeling for the building shall include, at a minimum, the criteria listed in Normative Appendix D of this code. Emissions of materials used for modeling VOC concentrations shall be obtained in accordance with the testing procedures of CDPH/EHLB/Standard Method V1.1 unless otherwise noted below.

    1. a.Tile, strip, panel, and plank products, including vinyl composition tile, resilient floor tile, linoleum tile, wood floor strips, parquet flooring, laminated flooring, and modular carpet tile.

    2. b.Sheet and roll goods, including broadloom carpet, sheet vinyl, sheet linoleum, carpet cushion, wallcovering, and other fabric.

    3. c.Rigid panel products, including gypsum board, other wall paneling, insulation board, oriented strand board, medium density fiber board, wood structural panel, acoustical ceiling tiles, and particleboard.

    4. d.Insulation products.

    5. e.Containerized products, including adhesives, sealants, paints, other coatings, primers, and other “wet” products.

    6. f.Cabinets, shelves, and worksurfaces that are permanently attached to the building before occupancy. Emissions of these items shall be obtained in accordance with the ANSI/BIFMA M7.1.

    7. g.Office furniture systems and seating installed prior to initial occupancy. Emissions of these items shall be obtained in accordance with the BIFMA M7.1.

    Exception: Salvaged materials that have not been refurbished or refinished within one year prior to installation.

    801.5.3 (8.5.3)Lighting for Presentations.

    Lighting systems shall be provided and shall be controllable by the occupants so as to meet the illuminance and uniformity requirements specified in items (a) through (c) for each permanently installed presentation system. Lighting control settings required to meet each of the specified levels shall be labeled at the control device.

    1. a.Lighting system and controls shall be capable of illuminating permanently installed white boards to at least an average of 28 fc (300 lux) vertical illuminance, and the ratio of average-to-minimum illuminance over the full area of the whiteboard shall be equal to or less than 3:1.

    2. b.Lighting system and controls shall be capable of illuminating permanently installed screens for frontscreen projection units to no greater than 5 fc (50 lux) vertical illuminance, and the ratio of maximumto-average illuminance over the full area of the projection screen shall be equal to or less than 2:1. Compliance with this provision shall not be met by turning off all the luminaires in the space.

    3. c.Lighting system and controls shall be capable of illuminating permanently installed screens for rearscreen projection units at a level no greater than 14 fc (150 lux) vertical illuminance, and the ratio of maximum-to-average illuminance over the full area of the projection screen shall be equal to or less than 2:1. Compliance with this provision shall not be met by turning off all the luminaires in the space.

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