Chapter 51-11C State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial.

A105.3 Construction description. Floors are assumed to be either joisted floors framed on 16 inch centers, or post and beam on 4 foot by 8 foot squares. Insulation is assumed to be installed under the subflooring between the joists or beams with no space between the insulation an…

[Statutory Authority: RCW 19.27A.020, 19.27A.025 and chapters 19.27 and 34.05 RCW. WSR 13-04-056, § 51-11C-61060, filed 2/1/13, effective 7/1/13.]

A106.1 General. Table A106.1 lists heat loss coefficients for heated on-grade slab floors, in units of Btu/h • °F per lineal foot of perimeter.Table A106.1Default F-factors for On-Grade SlabsInsulation TypeR-0R-5R-10R-15R-20R-30 Unheated Slab Uninsulated slab0.73—————2 ft. Horizo…

A106.2 Component description. All on-grade slab floors are assumed to be 6 inch concrete poured directly onto the earth. The bottom of the slab is assumed to be at grade line. Monolithic and floating slabs are not differentiated.Soil is assumed to have a conductivity of 0.75 Btu/…

A106.3 Insulation description. Coefficients are provided for the following three configurations:1. Two foot (or four foot) vertical: Insulation is applied directly to the slab exterior, extending downward from the top of the slab to a depth of 2 feet (or 4 feet) below grade.2. Tw…

[Statutory Authority: RCW 19.27A.020, 19.27A.025 and chapters 19.27 and 34.05 RCW. WSR 13-04-056, § 51-11C-61070, filed 2/1/13, effective 7/1/13.]

A107.1 Doors without NFRC certification. Doors that do not have NFRC certification shall be assigned the appropriate U-factor from Tables A107.1(1) through A107.1(4).[Statutory Authority: RCW 19.27A.020, 19.27A.025 and chapters 19.27 and 34.05 RCW. WSR 13-04-056, § 51-11C-61071, …

Table A107.1(1)Default U-factors for DoorsDoor TypeNoGlazedFenestrationSingleGlazingDoubleGlazingwith 1/4 in.AirspaceDoubleGlazingwith 1/2in.AirspaceDoubleGlazingwithe = 0.10,1/2 in.ArgonSwinging Doors (Rough opening - 38 in. x 82 in.)Slab Doors Wood slab in wood framea0.46 6% gl…

Table A107.1(2)Default U-factors for Revolving DoorsRevolving DoorsSize (W x H)U-Factor3-wing8 ft. x 7 ft.10 ft. x 8 ft.0.790.804-wing7 ft. x 6.5 ft.7 ft. x 7.5 ft.0.630.64Open82 in. x 84 in.1.32[Statutory Authority: RCW 19.27A.020, 19.27A.025 and chapters 19.27 and 34.05 RCW. WS…

Table A107.1(3)Default U-factors for Steel Emergency DoorsDouble-skin Steel Emergency Exit DoorsCore Insulation3 ft. x 6 ft. 8 in.6 ft. x 6 ft. 8 in.1-3/8 in. thicknessHoneycomb kraft paperMineral wool, steel ribsPolyurethane foam0.570.440.340.520.360.281-3/4 in. thicknessHoneyco…

Table A107.1(4)Default U-factors for Steel Garage and Hangar DoorsDouble-skin Steel Garage and Aircraft Hangar Doors One-piece tilt-upaSectional tilt-upbAircraft hangarInsulatione8 ft. x 7 ft.16 ft. x 7 ft.9 ft. x 7 ft.72 ft. x 12 ft.c240 ft. x 50 ft.d1-3/8 in. thicknessXPS, stee…

[Statutory Authority: RCW 19.27A.020, 19.27A.025 and chapters 19.27 and 34.05 RCW. WSR 13-04-056, § 51-11C-61080, filed 2/1/13, effective 7/1/13.]

A108.1 General. Tables A108.1(1) and A108.1(2) list effective air change rates and heat capacities for heat loss due to infiltration for Single-Family Residential.The estimated seasonal average infiltration rate in air changes per hour (ACH) is given for standard air-leakage cont…

[Statutory Authority: RCW 19.27A.020, 19.27A.025 and chapters 19.27 and 34.05 RCW. WSR 13-04-056, § 51-11C-70000, filed 2/1/13, effective 7/1/13.]

B101.1 Scope. The following default internal load values and schedules shall apply to Section C407.[Statutory Authority: RCW 19.27A.020, 19.27A.025 and chapters 19.27 and 34.05 RCW. WSR 13-04-056, § 51-11C-71010, filed 2/1/13, effective 7/1/13.]

B102 Default tables of internal loads. Default occupancy densities, receptacle power densities and service hot water consumption are included in Table B102.[Statutory Authority: RCW 19.27A.020, 19.27A.025 and chapters 19.27 and 34.05 RCW. WSR 13-04-056, § 51-11C-71020, filed 2/1/…

Table B102Acceptable Occupancy Densities, Receptacle Power Densitiesand Service Hot Water ConsumptionaBuilding TypeOccupancy Densityb ft2/Person (Btu/h • ft2)Receptacle Power Densityc, Watts/ft2 (Btu/h • ft2)Service Hot WaterQuantitiesd Btu/h per personAssembly50 (4.60)0.25 (0.85…

B103 Default schedules. Default schedules for occupancy, lighting, receptacles, HVAC, service hot water, and elevators are included in Tables B103(1) through B103(10).[Statutory Authority: RCW 19.27A.020, 19.27A.025 and chapters 19.27 and 34.05 RCW. WSR 13-04-056, § 51-11C-71030,…

Table B103(1)Assembly Occupancya Schedule for OccupancySchedule for Lightingb/Receptacle Schedule for ServiceHot WaterSchedule forElevatorHour of Day (time)Percent ofMaximum LoadPercent ofMaximum LoadSchedule for HVACSystemPercent ofMaximum LoadPercent ofMaximum Load WkSatSunWkSa…

Table B103(2)Health Occupancya Schedule for OccupancySchedule for Lightingb/Receptacle Schedule for ServiceHot WaterSchedule for ElevatorHour of Day(time)Percent ofMaximum LoadPercent ofMaximum LoadSchedule for HVAC SystemPercent ofMaximum LoadPercent ofMaximum Load WkSatSunWkSat…

Table B103(3)Hotel/Motel Occupancya Schedule forOccupancySchedule for Lighting/Receptacle Schedule for ServiceHot WaterSchedule for ElevatorHour of Day(time)Percent ofMaximum LoadPercent ofMaximum LoadSchedule for HVACSystemPercent ofMaximum LoadPercent ofMaximum Load WkSatSunWkS…

Table B103(4)Light Manufacturing Occupancya Schedule forOccupancySchedule for Lightingb/Receptacle Schedule for ServiceHot WaterSchedule for ElevatorHour of Day(time)Percent ofMaximum LoadPercent ofMaximum LoadSchedule for HVAC SystemPercent ofMaximum LoadPercent ofMaximum Load W…

Table B103(5)Office Occupancya Schedule forOccupancySchedule for Lightingb/Receptacle Schedule for ServiceHot WaterSchedule for ElevatorHour of Day(time)Percent ofMaximum LoadPercent ofMaximum LoadSchedule for HVACSystemPercent ofMaximum LoadPercent ofMaximum Load WkSatSunWkSatSu…

Table B103(6)Parking Garage OccupancyaHour of Day(time)Schedule forOccupancyPercent ofMaximum LoadSchedule forLightingb/ReceptaclePercent ofMaximum LoadSchedule forHVAC SystemSchedule forService Hot WaterPercent ofMaximum LoadSchedule forElevatorPercent ofMaximum Load WkSatSunWkS…

Table B103(7)Restaurant Occupancya Schedule forOccupancySchedule for Lightingb/Receptacle Schedule for Service Hot WaterSchedule for ElevatorHour of Day(time)Percent ofMaximum LoadPercent ofMaximum LoadSchedule forHVAC SystemPercent ofMaximum LoadPercent ofMaximum Load WkSatSunWk…

Table B103(8)Retail Occupancya Schedule forOccupancySchedule forLightingb/Receptacle Schedule for Service Hot WaterSchedule forElevatorHour of Day (time)Percent ofMaximum LoadPercent ofMaximum LoadSchedule for HVAC SystemPercent ofMaximum LoadPercent ofMaximum Load WkSatSunWkSatS…

Table B103(9)School Occupancya Schedule for OccupancySchedule for Lightingb/Receptacle Schedule for Service Hot WaterSchedule for ElevatorHour of Day (time)Percent ofMaximum LoadPercent ofMaximum LoadSchedule forHVACSystemPercent ofMaximum LoadPercent ofMaximum Load WkSatSunWkSat…

As required by Sections C302.2 and R302.2, the heating or cooling outdoor design temperatures shall be selected from Table C-1.[Statutory Authority: RCW 19.27A.020, 19.27A.025 and chapters 19.27 and 34.05 RCW. WSR 13-04-056, § 51-11C-80000, filed 2/1/13, effective 7/1/13.]

Table C-1Outdoor Design Temperatures Outdoor Design Temp. HeatingOutdoor Design Temp. CoolingLocation(°F)(°F)Aberdeen 20 NNE25 83 Anacortes24 72 Anatone-4 89 Auburn25 84 Battleground19 91 Bellevue24 83 Bellingham 2 N19 78 Blaine17 73 Bremerton29 83 Burlington19 77 Chehalis21 87 C…

D101 Scope. This appendix establishes criteria for demonstrating compliance using the HVAC total system performance ratio (HVAC TSPR) for systems serving office (including medical offices), retail, library and education occupancies and buildings, which are subject to the requirem…

[Statutory Authority: RCW 19.27A.020, 19.27A.025, 19.27A.160 and chapters 19.27A and 19.27 RCW. WSR 22-14-091, 23-12-101, and 23-20-021, § 51-11C-90000, filed 7/1/22, 6/7/23, and 9/25/23, effective 3/15/24. Statutory Authority: RCW 19.27A.020, 19.27A.025, 19.27A.160 and chapter 1…

Informational Note:The provisions contained in this appendix are not mandatory unless specifically referenced in the adopting ordinance.F101.1 General. This section is an outcome-based energy budget compliance requirement pursuant to RCW 19.27A.160 to incrementally move toward ac…