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Washington Administrative Code (Last Updated: November 23, 2016) |
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Title 51. Enterprise Services, Department of (Building Code Council) |
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Chapter 51-11C. State Building Code adoption and amendment of the 2015 edition of the International Energy Conservation Code, Commercial. |
Chapter 51-11C. State Building Code adoption and amendment of the 2015 edition of the International Energy Conservation Code, Commercial.
| Section 51-11C-10000. Chapter 1 CE—Scope and administration. |
| Section 51-11C-10100. Section C101—Scope and general requirements. |
| Section 51-11C-10140. Section C101.4—Applicability. |
| Section 51-11C-10143. Reserved. |
| Section 51-11C-10150. Section C101.5—Compliance. |
| Section 51-11C-10200. Section C102—Alternate materials—Method of construction, design or insulating systems. |
| Section 51-11C-10300. Section C103—Construction documents. |
| Section 51-11C-10400. Section C104—Inspections. |
| Section 51-11C-10500. Section C105—Validity. |
| Section 51-11C-10600. Section C106—Referenced standards. |
| Section 51-11C-10700. Section C107—Fees. |
| Section 51-11C-10800. Section C108—Stop work order. |
| Section 51-11C-10900. Section C109—Board of appeals. |
| Section 51-11C-11000. Section C110—Violations. |
| Section 51-11C-11100. Section C111—Liability. |
| Section 51-11C-20000. Chapter 2 CE—Definitions. |
| Section 51-11C-20100. Section C201—General. |
| Section 51-11C-20200. Section C202—General definitions. |
| Section 51-11C-20201. Section C202.1—A. |
| Section 51-11C-20202. Section C202.2—B. |
| Section 51-11C-20203. Section C202.3—C. |
| Section 51-11C-20204. Section C202.4—D. |
| Section 51-11C-20205. Section C202.5—E. |
| Section 51-11C-20206. Section C202.6—F. |
| Section 51-11C-20207. Section C202.7—G. |
| Section 51-11C-20208. Section C202.8—H. |
| Section 51-11C-20209. Section C202.9—I. |
| Section 51-11C-20210. Section C202.10—J. |
| Section 51-11C-20211. Section C202.11—K. |
| Section 51-11C-20212. Section C202.12—L. |
| Section 51-11C-20213. Section C202.13—M. |
| Section 51-11C-20214. Section C202.14—N. |
| Section 51-11C-20215. Section C202.15—O. |
| Section 51-11C-20216. Section C202.16—P. |
| Section 51-11C-20217. Section C202.17—Q. |
| Section 51-11C-20218. Section C202.18—R. |
| Section 51-11C-20219. Section C202.19—S. |
| Section 51-11C-20220. Section C202.20—T. |
| Section 51-11C-20221. Section C202.21—U. |
| Section 51-11C-20222. Section C202.22—V. |
| Section 51-11C-20223. Section C202.23—W. |
| Section 51-11C-20224. Section C202.24—X, Y, Z. |
| Section 51-11C-30000. Chapter 3 CE—General requirements. |
| Section 51-11C-30100. Section C301—Climate zones. |
| Section 51-11C-30200. Section C302—Design conditions. |
| Section 51-11C-30300. Section C303—Materials, systems and equipment. |
| Section 51-11C-30310. Section 303.1—Identification. |
| Section 51-11C-303131. Table C303.1.3(1)—Default glazed fenestration U-factors. |
| Section 51-11C-303132. Table C303.1.3(2)—Default door U-factors. |
| Section 51-11C-303133. Table C303.1.3(3)—Default glazed fenestration SHGC and VT. |
| Section 51-11C-303134. Table C303.1.3(4)—Default U-factors for skylights. |
| Section 51-11C-303135. Table C303.1.3(5)—Small business compliance default table. |
| Section 51-11C-30320. Section C303.2—Installation. |
| Section 51-11C-30330. Section C303.3—Maintenance information. |
| Section 51-11C-40000. Chapter 4 CE—Commercial energy efficiency. |
| Section 51-11C-40100. Section C401—General. |
| Section 51-11C-40200. Section C402—Building envelope requirements. |
| Section 51-11C-40210. Section C402.1—General (Prescriptive). |
| Section 51-11C-40211. Section C402.1.1—Low energy buildings. |
| Section 51-11C-40212. Section C402.1.2—Equipment buildings. |
| Section 51-11C-402121. Table C402.1.3—Opaque thermal envelope assembly R-value requirements. |
| Section 51-11C-40213. Section C402.1.3—Insulation component R-value method. |
| Section 51-11C-402131. Reserved. |
| Section 51-11C-402132. Reserved. |
| Section 51-11C-402133. Reserved. |
| Section 51-11C-402134. Reserved. |
| Section 51-11C-40214. Section C402.1.4—Assembly U-factor, C-factor, or F-factor-based method. |
| Section 51-11C-402141. Table C402.1.4—Opaque thermal envelope requirements, U-factor method. |
| Section 51-11C-402142. Table C402.1.4.1—Effective R-values for steel stud wall assemblies. |
| Section 51-11C-40215. Section C402.1.5—Component performance alternative. |
| Section 51-11C-40220. Section C402.2—Specific insulation requirements. |
| Section 51-11C-402200. Reserved. |
| Section 51-11C-40221. Section C402.2.1—Multiple layers of continuous insulation. |
| Section 51-11C-402211. Reserved. |
| Section 51-11C-40222. Section C402.2.2—Roof assembly. |
| Section 51-11C-40223. Section C402.2.3—Above-grade walls. |
| Section 51-11C-40224. Section C402.2.4—Below-grade walls. |
| Section 51-11C-40225. Section C402.2.5—Floors. |
| Section 51-11C-40226. Section C402.2.6—Slab-on-grade perimeter insulation. |
| Section 51-11C-40227. Reserved. |
| Section 51-11C-40228. Section C402.2.8—Insulation of radiant heating systems. |
| Section 51-11C-40230. Section C402.4—Fenestration (Prescriptive). |
| Section 51-11C-402300. Table C402.4—Building envelope requirements—Fenestration. |
| Section 51-11C-40231. Section C402.4.1—Maximum area. |
| Section 51-11C-40232. Section C402.4.2—Minimum skylight fenestration area. |
| Section 51-11C-40233. Section C402.4.3—Maximum U-factor and SHGC. |
| Section 51-11C-40234. Section C402.4.4—Doors. |
| Section 51-11C-40240. Section C402.5—Air leakage-thermal envelope. |
| Section 51-11C-40241. Section C402.5.1—Air barriers. |
| Section 51-11C-40242. Reserved. |
| Section 51-11C-40243. Section C402.5.3—Rooms containing fuel-burning appliances. |
| Section 51-11C-40244. Section C402.5.4—Doors and access openings. |
| Section 51-11C-40245. Section C402.5.5—Air intakes, exhaust openings, stairways and shafts. |
| Section 51-11C-40246. Section C402.5.6—Loading dock weatherseals. |
| Section 51-11C-40247. Section C402.5.7—Vestibules. |
| Section 51-11C-40248. Section C402.5.8—Recessed lighting. |
| Section 51-11C-40250. Reserved. |
| Section 51-11C-40260. Reserved. |
| Section 51-11C-40300. Section C403—Mechanical systems. |
| Section 51-11C-40310. Section C403.1—General. |
| Section 51-11C-40320. Section C403.2—Provisions applicable to all mechanical systems. |
| Section 51-11C-40321. Section C403.2.1—Calculation of heating and cooling loads. |
| Section 51-11C-40322. Section C403.2.2—Equipment and systems sizing. |
| Section 51-11C-40323. Section C403.2.3—HVAC equipment performance requirements. |
| Section 51-11C-403231. Table C403.2.3(1)—Minimum efficiency requirements—Electrically operated unitary air conditioners and condensing units. |
| Section 51-11C-403232. Table C403.2.3(2)—Minimum efficiency requirements—Electrically operated unitary and applied heat pumps. |
| Section 51-11C-403233. Table C403.2.3(3)—Minimum efficiency requirements—Electrically operated PTAC, PTHP, SPVAC, SPVHP, room air conditioners. |
| Section 51-11C-403234. Table C403.2.3(4)—Minimum efficiency requirements—Warm air furnaces and unit heaters. |
| Section 51-11C-403235. Table C403.2.3(5)—Minimum efficiency requirements—Gas- and oil-fired boilers. |
| Section 51-11C-403236. Table C403.2.3(6)—Reserved. |
| Section 51-11C-403237. Table C403.2.3(7)—Minimum efficiency requirements—Water chilling packages. |
| Section 51-11C-403238. Table C403.2.3(8)—Minimum efficiency requirements—Heat rejection equipment. |
| Section 51-11C-403239. Table C403.2.3(9) and Table C403.2.3(10)—Minimum efficiency requirements. |
| Section 51-11C-40324. Section C403.2.4—HVAC system controls. |
| Section 51-11C-403241. Section C403.2.4.1—Thermostatic controls. |
| Section 51-11C-403242. Section C403.2.4.2—Off-hour controls. |
| Section 51-11C-403243. Section C403.2.4.3—Shutoff dampers. |
| Section 51-11C-403244. Section C403.2.4.4—Zone isolation. |
| Section 51-11C-403245. Section C403.2.4.5—Snowmelt and freeze protection controls. |
| Section 51-11C-403246. Section C403.2.4.7—Economizer fault detection and Section C403.2.4.8—Combustion heating equipment controls. |
| Section 51-11C-403247. Sections C403.2.4.9 through C403.2.4.11—Group R controls. |
| Section 51-11C-403248. Section C403.2.4.12—Direct digital control systems. |
| Section 51-11C-403249. Section C403.2.5—Hot water boiler controls. |
| Section 51-11C-40325. Section C403.2.6—Ventilation. |
| Section 51-11C-403251. Reserved. |
| Section 51-11C-403252. Section C403.2.6.2—Demand control ventilation. |
| Section 51-11C-403253. Section C403.2.6.3—Occupancy sensors. |
| Section 51-11C-403254. Section C403.2.6.4—Loading dock and parking garage ventilation system controls. |
| Section 51-11C-40326. Section C403.2.7—Exhaust systems. |
| Section 51-11C-403261. Reserved. |
| Section 51-11C-40327. Section C403.2.8—Duct and plenum insulation and sealing. |
| Section 51-11C-40328. Section C403.2.9—Piping insulation. |
| Section 51-11C-403281. Table C403.2.9—Minimum pipe insulation thickness. |
| Section 51-11C-40329. Section C403.2.10—Mechanical system commissioning and completion requirements. |
| Section 51-11C-403291. Section C403.2.11—Air system design and control. |
| Section 51-11C-403292. Tables for Section C403.2.11. |
| Section 51-11C-403293. Section C403.2.12—Heating outside a building. |
| Section 51-11C-403294. Section C403.2.13—System criteria. |
| Section 51-11C-403295. Section C403.2.14—Electric motor efficiency. |
| Section 51-11C-40330. Section C403.3—Economizers. |
| Section 51-11C-40331. Section C403.3.1—Integrated economizer control. |
| Section 51-11C-40332. Section C403.3.2—Economizer heating system impact. |
| Section 51-11C-40333. Section C403.3.3—Air economizers. |
| Section 51-11C-40334. Section C403.3.4—Water-side economizers. |
| Section 51-11C-40340. Section C403.4—Hydronic and multiple-zone HVAC systems. |
| Section 51-11C-40341. Reserved. |
| Section 51-11C-40342. Section C403.4.1—Fan control. |
| Section 51-11C-40343. Section C403.4.2—Hydronic systems controls. |
| Section 51-11C-403431. Reserved. |
| Section 51-11C-40344. Section C403.4.3—Heat rejection equipment. |
| Section 51-11C-40345. Section C403.4.4—Requirements for mechanical systems serving multiple zones. |
| Section 51-11C-40346. Reserved. |
| Section 51-11C-40347. Section C403.4.7—Hot gas bypass limitation. |
| Section 51-11C-40350. Section C403.5—Energy recovery. |
| Section 51-11C-40360. Section C403.6—Dedicated outdoor air systems (DOAS). |
| Section 51-11C-40400. Section C404—Service water heating (Mandatory). |
| Section 51-11C-40401. Section C404.1—General. |
| Section 51-11C-40402. Section C404.2—Service water-heating equipment performance efficiency. |
| Section 51-11C-404021. Table C404.2—Minimum performance of water-heating equipment. |
| Section 51-11C-40403. Section C404.3—Efficient heated water supply piping. |
| Section 51-11C-40404. Section C404.4—Heat traps. |
| Section 51-11C-40405. Section C404.5—Water heater installation. |
| Section 51-11C-40406. Section C404.6—Pipe insulation. |
| Section 51-11C-40407. Section C404.7—Heated-water circulating and temperature maintenance systems. |
| Section 51-11C-40408. Section C404.8—Demand recirculation controls. |
| Section 51-11C-40409. Section C404.9—Domestic hot water meters. |
| Section 51-11C-404091. Section C404.10—Drain water heat recovery units. |
| Section 51-11C-40410. Section C404.11—Pools and spas. |
| Section 51-11C-40413. Section C404.13—Service water-heating system commissioning and completion requirements. |
| Section 51-11C-40500. Section C405—Electrical power and lighting systems. |
| Section 51-11C-40501. Section C405.1—General. |
| Section 51-11C-40502. Section C405.2—Electrical power and lighting systems. |
| Section 51-11C-405021. Section C405.2.1—Occupant sensor controls. |
| Section 51-11C-405022. Section C405.2.2—Time switch controls. |
| Section 51-11C-405023. Section C405.2.3—Manual controls. |
| Section 51-11C-405024. Section C405.2.4—Daylight responsive controls. |
| Section 51-11C-405025. Section C405.2.5—Additional lighting controls. |
| Section 51-11C-405026. Section C405.2.6—Digital timer switch. |
| Section 51-11C-405027. Section C405.2.7—Exterior lighting controls. |
| Section 51-11C-405028. Section C405.2.8—Area controls. |
| Section 51-11C-40503. Reserved. |
| Section 51-11C-40504. Section C405.3—Exit signs. |
| Section 51-11C-40505. Section C405.4—Interior lighting power requirements. |
| Section 51-11C-405051. Section C405.4.1—Total connected interior lighting power. |
| Section 51-11C-405052. Section C405.4.2—Interior lighting power requirements. |
| Section 51-11C-405053. Table C405.4.2(1)—Interior lighting power allowances—Building area method. |
| Section 51-11C-405054. Table C405.4.2(2)—Interior lighting power allowances—Space-by-space method. |
| Section 51-11C-40506. Section C405.5—Exterior lighting. |
| Section 51-11C-405061. Section C405.5.1—Exterior building grounds lighting. |
| Section 51-11C-405062. Section C405.5.2—Exterior building lighting power. |
| Section 51-11C-405063. Table C405.5.2(1)—Exterior lighting zones. |
| Section 51-11C-405064. Table C405.5.2(2)—Individual lighting power allowances for building exteriors. |
| Section 51-11C-40507. Section C405.7—Electrical energy consumption. |
| Section 51-11C-40508. Section C405.8—Electric motors. |
| Section 51-11C-40509. Section C405.9—Vertical and horizontal transportation systems. |
| Section 51-11C-40510. Section C405.10—Controlled receptacles. |
| Section 51-11C-40511. Reserved. |
| Section 51-11C-40512. Reserved. |
| Section 51-11C-40513. Section C405.13—Electrical power and lighting systems commissioning and completion requirements. |
| Section 51-11C-40600. Section C406—Additional efficiency package options. |
| Section 51-11C-40602. Section C406.2—HVAC option. |
| Section 51-11C-40603. Section C406.3—LPA option. |
| Section 51-11C-40604. Section C406.4—Lighting controls option. |
| Section 51-11C-40605. Section C406.5—On-site renewable energy option. |
| Section 51-11C-40606. Section C406.6—DOAS option. |
| Section 51-11C-40607. Section C406.7—Service water heating option. |
| Section 51-11C-40608. Section C406.8—Envelope option. |
| Section 51-11C-40609. Section C406.9—Air infiltration option. |
| Section 51-11C-40700. Section C407—Total building performance. |
| Section 51-11C-40701. Section C407.1—Scope. |
| Section 51-11C-40702. Section C407.2—Mandatory requirements. |
| Section 51-11C-40703. Section C407.3—Performance-based compliance. |
| Section 51-11C-40704. Section C407.4—Documentation. |
| Section 51-11C-40705. Section C407.5—Calculation procedure. |
| Section 51-11C-407051. Table C407.5.1(1)—Specifications for the standard reference and proposed design. |
| Section 51-11C-407052. Table C407.5.1(2)/(3)—HVAC systems map. |
| Section 51-11C-407053. Table C407.5.1(4)—Specifications for the standard reference design HVAC system description. |
| Section 51-11C-407054. Table C407.5.1(5)—Number of chillers. |
| Section 51-11C-407055. Table C407.5.1(6)—Water chiller types. |
| Section 51-11C-40706. Section C407.6—Calculation software tool. |
| Section 51-11C-40800. Section C408—System commissioning. |
| Section 51-11C-40801. Section C408.1—General. |
| Section 51-11C-408012. Figure C408.1.4.2—Commissioning compliance checklist. |
| Section 51-11C-40802. Section C408.2—Mechanical systems commissioning. |
| Section 51-11C-40803. Section C408.3—Lighting system commissioning. |
| Section 51-11C-40804. Section C408.4—Service water heating systems commissioning. |
| Section 51-11C-408045. Section C408.5—Other systems commissioning. |
| Section 51-11C-40805. Section C408.6—Metering system commissioning. |
| Section 51-11C-40900. Section C409—Energy metering and energy consumption management. |
| Section 51-11C-40901. Section C409.1—General. |
| Section 51-11C-40902. Section C409.2—Energy source metering. |
| Section 51-11C-40903. Section C409.3—End-use metering. |
| Section 51-11C-40904. Section C409.4—Measurement devices, data acquisition system and energy display. |
| Section 51-11C-40905. Section C409.5—Metering for existing buildings. |
| Section 51-11C-41000. Section C410—Refrigeration system requirements. |
| Section 51-11C-50000. Chapter 5 [CE]—Existing buildings. |
| Section 51-11C-50200. Section C502—Additions. |
| Section 51-11C-50300. Section C503—Alterations. |
| Section 51-11C-50400. Section C504—Repairs. |
| Section 51-11C-50500. Section C505—Change of occupancy or use. |
| Section 51-11C-60000. Appendix A—Default heat loss coefficients. |
| Section 51-11C-600000. Chapter 6 [CE]—Referenced standards. |
| Section 51-11C-61010. Section A101—General. |
| Section 51-11C-61011. Section A101.1—Scope. |
| Section 51-11C-61012. Section A101.2—Description. |
| Section 51-11C-61013. Section A101.3—Air films. |
| Section 51-11C-61014. Section A101.4—Compression of insulation. |
| Section 51-11C-61015. Section A101.5—Building materials. |
| Section 51-11C-61020. Section A102—Ceilings. |
| Section 51-11C-61021. Section A102.1—General. |
| Section 51-11C-610211. Table A102.1—Default U-factors for ceilings. |
| Section 51-11C-61022. Section A102.2—Component description. |
| Section 51-11C-610221. Tables A102.2.4—Steel truss framed ceiling Uo values. |
| Section 51-11C-610225. Tables A102.2.5—Default U-factors for metal building roofs. |
| Section 51-11C-610226. Tables A102.2.6—Assembly U-factors for roofs with insulation entirely above deck. |
| Section 51-11C-61030. Section A103—Above grade walls. |
| Section 51-11C-61031. Section A103.1—General. |
| Section 51-11C-61032. Section A103.2—Framing description. |
| Section 51-11C-61033. Section A103.3—Component description. |
| Section 51-11C-610331. Section A103.3.1—Single stud wall. |
| Section 51-11C-610332. Section A103.3.2—Strap wall. |
| Section 51-11C-610333. Section A103.3.3—Double stud wall. |
| Section 51-11C-610334. Section A103.3.4—Log wall. |
| Section 51-11C-610335. Section A103.3.5—Stress skin panel. |
| Section 51-11C-610336. Section A103.3.6—Metal stud walls. |
| Section 51-11C-610337. Section A103.3.7—Concrete and masonry walls. |
| Section 51-11C-61040. Section A104—Below-grade walls and slabs. |
| Section 51-11C-61041. Section A104.1—General. |
| Section 51-11C-61042. Section A104.2—Component description. |
| Section 51-11C-61043. Section A104.3—Insulation description. |
| Section 51-11C-61050. Section A105—Floors over unconditioned space. |
| Section 51-11C-61051. Section A105.1—General. |
| Section 51-11C-61052. Section A105.2—Crawlspace description. |
| Section 51-11C-61053. Section A105.3—Construction description. |
| Section 51-11C-61060. Section A106—On-grade slab floors. |
| Section 51-11C-61061. Section A106.1—General. |
| Section 51-11C-61062. Section A106.2—Component description. |
| Section 51-11C-61063. Section A106.3—Insulation description. |
| Section 51-11C-61070. Section A107—Default U-factors for doors. |
| Section 51-11C-61071. Section A107.1—Doors without NFRC certification. |
| Section 51-11C-610711. Table A107.1(1)—Default U-factors for doors. |
| Section 51-11C-610712. Table A107.1(2)—Default U-factors for revolving doors. |
| Section 51-11C-610713. Table A107.1(3)—Default U-factors for steel emergency doors. |
| Section 51-11C-610714. Table A107.1(4)—Default U-factors for steel garage and hangar doors. |
| Section 51-11C-61080. Section A108—Air infiltration. |
| Section 51-11C-61081. Section A108.1—General. |
| Section 51-11C-70000. Appendix B—Default internal load values and schedules. |
| Section 51-11C-71010. Section B101—General. |
| Section 51-11C-71020. Section B102—Default tables of internal loads. |
| Section 51-11C-71021. Table B102—Acceptable occupancy densities, receptacle power densities and service hot water consumption. |
| Section 51-11C-71030. Section B103—Default schedules. |
| Section 51-11C-71031. Table B103(1)—Assembly occupancy. |
| Section 51-11C-71032. Table B103(2)—Health occupancy. |
| Section 51-11C-71033. Table B103(3)—Hotel/motel occupancy. |
| Section 51-11C-71034. Table B103(4)—Light manufacturing occupancy. |
| Section 51-11C-71035. Table B103(5)—Office occupancy. |
| Section 51-11C-71036. Table B103(6)—Parking garage occupancy. |
| Section 51-11C-71037. Table B103(7)—Restaurant occupancy. |
| Section 51-11C-71038. Table B103(8)—Retail occupancy. |
| Section 51-11C-71039. Table B103(9)—School and warehouse occupancies. |
| Section 51-11C-80000. Appendix C—Exterior design conditions. |
| Section 51-11C-80100. Table C-1—Outdoor design temperatures for Washington. |
| Section 51-11C-80500. Appendix D—Renewable energy. |