Washington Administrative Code
2022 Archive

Chapter 296-150C WAC
Last Update: 9/20/22

COMMERCIAL COACHES
PDF of Chapter Digest
WAC Sections
296-150C-0010Authority, purpose, and scope.
296-150C-0020What definitions apply to this chapter?
296-150C-0030How is this chapter enforced?
296-150C-0040Will you keep my manufacturing information confidential?
296-150C-0050Can you prohibit the sale or lease of my commercial coach?
296-150C-0060Who handles consumer complaints about commercial coaches?
296-150C-0070Do you have reciprocal agreements with other states to inspect commercial coaches?
296-150C-0080Do you allow a local enforcement agency to inspect commercial coaches at the manufacturing location?
296-150C-0100What happens if I disagree with your decision regarding my compliance with this chapter?
296-150C-0110Do you have an advisory board to address commercial coach issues?
296-150C-0120Where can I obtain technical assistance regarding commercial coaches?
296-150C-0140Do you allow the use of alternate materials, alternate design and method of construction?
296-150C-0150How does the department regulate commercial coaches that are used as medical units as defined in chapter 296-150V WAC?
INSIGNIA
296-150C-0200Who must obtain commercial coach insignia?
296-150C-0210What are the insignia requirements?
296-150C-0220How do I obtain insignia information and the required forms?
296-150C-0230What are the insignia application requirements?
296-150C-0240What documentation do you need to perform an alteration inspection?
296-150C-0250How do I replace lost or damaged insignia?
DESIGN PLAN
296-150C-0300When is design-plan approval required?
296-150C-0310Who can approve design plans?
DESIGN-PLAN APPROVAL BY THE DEPARTMENT
296-150C-0320What must I provide with my request for commercial coach design-plan approval by the department?
296-150C-0340What must an engineering analysis for design plans include?
296-150C-0350What must test procedures and results for design plans include?
296-150C-0380What happens if you approve my design plan?
296-150C-0390If my design plan is not approved, how much time do I have to submit a corrected design plan?
296-150C-0400What happens after my design plan is approved?
296-150C-0410When does my design plan expire?
296-150C-0415Who approves addendums to design plans approved by the department?
DESIGN-PLAN APPROVAL BY A LICENSED PROFESSIONAL OR FIRM
296-150C-0420Who can be authorized to approve design plans?
296-150C-0430What information must a professional or firm provide to be authorized to approve design plans?
296-150C-0440How will I know whether I am authorized to approve design plans?
296-150C-0450How long is a licensed professional or firms authorization effective?
296-150C-0460What information must a manufacturer provide when a professional or firm does the design-plan approval?
296-150C-0470What happens after we receive the professional or firm approved design plan and information?
296-150C-0480Do you have a list of professionals or firms that are authorized to approve design plans?
296-150C-0490Who approves addendums to design plans approved by a professional or firm?
296-150C-0495Contractor deposit accounts.
INSPECTIONS PRIOR TO ISSUANCE OF AN INSIGNIA
296-150C-0500When is an inspection required?
296-150C-0510How do I request an inspection?
296-150C-0520What happens if my commercial coach passes inspection?
296-150C-0530Am I charged if I request an inspection but I am not prepared?
296-150C-0540Who inspects commercial coach installation at the building site?
296-150C-0550Do you allow a commercial coach to be completed at the installation site?
296-150C-0560What happens if I receive a notice of noncompliance after inspection of the alteration to my commercial coach?
USED COMMERCIAL COACHES WITHOUT AN INSIGNIA
296-150C-0580Must I obtain an insignia for used commercial coaches?
296-150C-0590How do I obtain insignia for used commercial coaches?
MANUFACTURER'S NOTICE TO THE DEPARTMENT
296-150C-0700Must manufacturers of commercial coaches notify you if they manufacture at more than one location?
296-150C-0710Must manufacturers of commercial coaches notify you of a change in business name or address?
296-150C-0720Must manufacturers of commercial coaches notify you of a change in business ownership?
COMMERCIAL COACH CONSTRUCTION CODE
GENERAL
296-150C-0800What manufacturing codes apply to commercial coaches?
296-150C-0805Are there any special requirements for portable school classrooms?
296-150C-0810Construction definitions.
STRUCTURAL
296-150C-0820What are the basic structural requirements of a commercial coach?
296-150C-0830Fastening of structural systems.
296-150C-0840Live loads.
296-150C-0850Roof loads.
296-150C-0860Snow loads.
296-150C-0870Standard wind loads.
296-150C-0880Windstorm protection—Provisions for support and anchoring.
296-150C-0900Interior walls and partitions.
296-150C-0910Minimum uniform and concentrated live loads.
296-150C-0920Design load deflection.
296-150C-0930Structural load tests.
CONSTRUCTION
296-150C-0940Fastening of structural systems.
296-150C-0950Roof coverings/membrane/weather resistant.
296-150C-0960What requirements apply to commercial coach roof trusses?
296-150C-0970Roof construction.
296-150C-0990Sealing wall exterior openings.
296-150C-1000Drilling or notching of wood wall structural members.
296-150C-1020Wall construction.
296-150C-1030Fire-blocking.
296-150C-1040Floors.
296-150C-1050Drilling or notching of wood joist structural members.
296-150C-1060Fastening of structural systems.
296-150C-1070Floor closure material.
296-150C-1080What design and construction requirements apply to a commercial coach chassis?
MATERIALS
296-150C-1090Standards for equipment and installations.
296-150C-1100Flame-spread limitations.
296-150C-1110Combustible limitations.
296-150C-1120Kitchen cabinet protection.
296-150C-1130Insulation standards.
296-150C-1140Room sizes.
296-150C-1150Hallways.
296-150C-1160Accessibility standards.
296-150C-1170What are the lighting and ventilation requirements of a commercial coach?
296-150C-1175Glass and glazed openings.
296-150C-1180Commercial coach exits.
296-150C-1190Interior privacy.
296-150C-1195Fire warning equipment—Automatic smoke detectors.
296-150C-1200Installation instructions.
296-150C-1210Table: Number of ties required per side of commercial coach.
ELECTRICAL
296-150C-1220Electrical—General.
296-150C-1230Electrical definitions.
296-150C-1240Branch circuit and feeder calculations.
296-150C-1250Disconnecting means and branch circuit protective equipment.
296-150C-1260Power supply—Feeder assembly equipment.
296-150C-1270Identification of feeder assembly connection.
296-150C-1280Wiring methods—Wiring of expandable or multiple units.
296-150C-1290Under-chassis wiring.
296-150C-1300Equipment mounting.
296-150C-1303How must storage batteries be installed in a commercial coach?
296-150C-1310Grounding—General.
296-150C-1320Dielectric strength test.
MECHANICAL
296-150C-1330Mechanical—General.
296-150C-1340Mechanical definitions.
296-150C-1346When HVAC equipment is supplied with more than one CFM rating, which rating do I use?
296-150C-1350LPG system enclosure and mounting.
296-150C-1360Gas piping—Piping design.
296-150C-1370Gas piping—Expandable or multiple commercial coaches.
296-150C-1380Concealed tubing.
296-150C-1390Gas piping—Pipe-joint compound.
296-150C-1400Gas piping—Hangers and supports.
296-150C-1410Gas piping—Electrical ground.
296-150C-1420Identification of gas supply connections.
296-150C-1430Gas piping system openings.
296-150C-1440Gas piping—Valves.
296-150C-1450Gas piping—Testing for leakage before appliances are connected.
296-150C-1460Gas piping—Testing for leakage after appliances are connected.
VENTILATION AND INDOOR AIR QUALITY
296-150C-1470Ventilation and indoor air quality—General.
296-150C-1480Ventilation and indoor air quality definitions.
296-150C-1490Appliances—Installation.
296-150C-1500Safety devices—Water heater relief valves.
296-150C-1510Air ducts—Expandable or multiple commercial coach connections.
296-150C-1520Air ducts—Duct and plenum insulation.
PLUMBING
296-150C-1530Plumbing—General.
296-150C-1540Plumbing—Definitions.
296-150C-1545Does the department require a water system expansion tank be installed?
296-150C-1550Drainage—Cap or plug.
296-150C-1560Drainage—Clearance from drain outlet.
296-150C-1570Water supply connection.
COMMERCIAL COACH FEES
296-150C-3000Commercial coach fees.
DISPOSITION OF SECTIONS FORMERLY CODIFIED IN THIS TITLE
296-150C-0330What must I provide with my request for a commercial coach vendor unit design-plan approval by the department? [Statutory Authority: RCW 43.22.340, [43.22.]355, [43.22.]360, [43.22.]432, [43.22.]440 and [43.22.]480. WSR 96-21-146, § 296-150C-0330, filed 10/23/96, effective 11/25/96.] Repealed by WSR 00-01-188, filed 12/22/99, effective 2/8/00. Statutory Authority: RCW 43.22.480.
296-150C-0980Wall coverings. [Statutory Authority: RCW 43.22.340, [43.22.]355, [43.22.]360, [43.22.]432, [43.22.]440 and [43.22.]480. WSR 96-21-146, § 296-150C-0980, filed 10/23/96, effective 11/25/96.] Repealed by WSR 98-14-078, filed 6/30/98, effective 731/98. Statutory Authority: Chapter 43.22 RCW.
296-150C-1345May the electrical disconnect required for mechanical equipment be inside of or mounted on the equipment? [Statutory Authority: RCW 43.22.340 and 43.22.480. WSR 99-13-010, § 296-150C-1345, filed 6/4/99, effective 7/5/99.] Repealed by WSR 05-01-102, filed 12/14/04, effective 2/1/05. Statutory Authority: Chapter 43.22 RCW and 2003 c 291.
296-150C-1580What manufacturing codes apply when converting structures to vendor units? [Statutory Authority: Chapter 43.22 RCW. WSR 98-14-078, § 296-150C-1580, filed 6/30/98, effective 7/31/98. Statutory Authority: RCW 43.22.340, [43.22.]355, [43.22.]360, [43.22.]432, [43.22.]440 and [43.22.]480. WSR 96-21-146, § 296-150C-1580, filed 10/23/96, effective 11/25/96.] Repealed by WSR 00-01-188, filed 12/22/99, effective 2/8/00. Statutory Authority: RCW 43.22.480.
296-150C-1590Is a structural analysis required when converting a vehicle or structure to a vendor unit? [Statutory Authority: Chapter 43.22 RCW. WSR 98-14-078, § 296-150C-1590, filed 6/30/98, effective 7/31/98. Statutory Authority: RCW 43.22.340, [43.22.]355, [43.22.]360, [43.22.]432, [43.22.]440 and [43.22.]480. WSR 96-21-146, § 296-150C-1590, filed 10/23/96, effective 11/25/96.] Repealed by WSR 00-01-188, filed 12/22/99, effective 2/8/00. Statutory Authority: RCW 43.22.480.
296-150C-1600What are the live load requirements of a vendor unit? [Statutory Authority: Chapter 43.22 RCW. WSR 98-14-078, § 296-150C-1600, filed 6/30/98, effective 7/31/98. Statutory Authority: RCW 43.22.340, [43.22.]355, [43.22.]360, [43.22.]432, [43.22.]440 and [43.22.]480. WSR 96-21-146, § 296-150C-1600, filed 10/23/96, effective 11/25/96.] Repealed by WSR 00-01-188, filed 12/22/99, effective 2/8/00. Statutory Authority: RCW 43.22.480.
296-150C-1610Design load deflection. [Statutory Authority: RCW 43.22.340, [43.22.]355, [43.22.]360, [43.22.]432, [43.22.]440 and [43.22.]480. WSR 96-21-146, § 296-150C-1610, filed 10/23/96, effective 11/25/96.] Repealed by WSR 00-01-188, filed 12/22/99, effective 2/8/00. Statutory Authority: RCW 43.22.480.
296-150C-1620Structural load tests. [Statutory Authority: RCW 43.22.340, [43.22.]355, [43.22.]360, [43.22.]432, [43.22.]440 and [43.22.]480. WSR 96-21-146, § 296-150C-1620, filed 10/23/96, effective 11/25/96.] Repealed by WSR 00-01-188, filed 12/22/99, effective 2/8/00. Statutory Authority: RCW 43.22.480.
296-150C-1630Roof coverings/membrane/weather resistant. [Statutory Authority: RCW 43.22.340, [43.22.]355, [43.22.]360, [43.22.]432, [43.22.]440 and [43.22.]480. WSR 96-21-146, § 296-150C-1630, filed 10/23/96, effective 11/25/96.] Repealed by WSR 00-01-188, filed 12/22/99, effective 2/8/00. Statutory Authority: RCW 43.22.480.
296-150C-1640Floors. [Statutory Authority: RCW 43.22.340, [43.22.]355, [43.22.]360, [43.22.]432, [43.22.]440 and [43.22.]480. WSR 96-21-146, § 296-150C-1640, filed 10/23/96, effective 11/25/96.] Repealed by WSR 00-01-188, filed 12/22/99, effective 2/8/00. Statutory Authority: RCW 43.22.480.
296-150C-1650Floor closure material. [Statutory Authority: RCW 43.22.340, [43.22.]355, [43.22.]360, [43.22.]432, [43.22.]440 and [43.22.]480. WSR 96-21-146, § 296-150C-1650, filed 10/23/96, effective 11/25/96.] Repealed by WSR 00-01-188, filed 12/22/99, effective 2/8/00. Statutory Authority: RCW 43.22.480.
296-150C-1660Chassis approval. [Statutory Authority: RCW 43.22.340, [43.22.]355, [43.22.]360, [43.22.]432, [43.22.]440 and [43.22.]480. WSR 96-21-146, § 296-150C-1660, filed 10/23/96, effective 11/25/96.] Repealed by WSR 00-01-188, filed 12/22/99, effective 2/8/00. Statutory Authority: RCW 43.22.480.
296-150C-1670Standards for equipment and installations. [Statutory Authority: RCW 43.22.340, [43.22.]355, [43.22.]360, [43.22.]432, [43.22.]440 and [43.22.]480. WSR 96-21-146, § 296-150C-1670, filed 10/23/96, effective 11/25/96.] Repealed by WSR 00-01-188, filed 12/22/99, effective 2/8/00. Statutory Authority: RCW 43.22.480.
296-150C-1680Flame-spread limitations. [Statutory Authority: RCW 43.22.340, [43.22.]355, [43.22.]360, [43.22.]432, [43.22.]440 and [43.22.]480. WSR 96-21-146, § 296-150C-1680, filed 10/23/96, effective 11/25/96.] Repealed by WSR 00-01-188, filed 12/22/99, effective 2/8/00. Statutory Authority: RCW 43.22.480.
296-150C-1690Cabinet protection. [Statutory Authority: RCW 43.22.340, [43.22.]355, [43.22.]360, [43.22.]432, [43.22.]440 and [43.22.]480. WSR 96-21-146, § 296-150C-1690, filed 10/23/96, effective 11/25/96.] Repealed by WSR 00-01-188, filed 12/22/99, effective 2/8/00. Statutory Authority: RCW 43.22.480.
296-150C-1700Insulation standards. [Statutory Authority: RCW 43.22.340, [43.22.]355, [43.22.]360, [43.22.]432, [43.22.]440 and [43.22.]480. WSR 96-21-146, § 296-150C-1700, filed 10/23/96, effective 11/25/96.] Repealed by WSR 00-01-188, filed 12/22/99, effective 2/8/00. Statutory Authority: RCW 43.22.480.
296-150C-1710Light and ventilation. [Statutory Authority: RCW 43.22.340, [43.22.]355, [43.22.]360, [43.22.]432, [43.22.]440 and [43.22.]480. WSR 96-21-146, § 296-150C-1710, filed 10/23/96, effective 11/25/96.] Repealed by WSR 00-01-188, filed 12/22/99, effective 2/8/00. Statutory Authority: RCW 43.22.480.
296-150C-1720What requirements apply to vending unit exits? [Statutory Authority: Chapter 43.22 RCW. WSR 98-14-078, § 296-150C-1720, filed 6/30/98, effective 7/31/98. Statutory Authority: RCW 43.22.340, [43.22.]355, [43.22.]360, [43.22.]432, [43.22.]440 and [43.22.]480. WSR 96-21-146, § 296-150C-1720, filed 10/23/96, effective 11/25/96.] Repealed by WSR 00-01-188, filed 12/22/99, effective 2/8/00. Statutory Authority: RCW 43.22.480.
296-150C-1730What code and installation requirements apply to vendor unit electrical systems? [Statutory Authority: Chapter 43.22 RCW. WSR 98-14-078, § 296-150C-1730, filed 6/30/98, effective 7/31/98. Statutory Authority: RCW 43.22.340, [43.22.]355, [43.22.]360, [43.22.]432, [43.22.]440 and [43.22.]480. WSR 96-21-146, § 296-150C-1730, filed 10/23/96, effective 11/25/96.] Repealed by WSR 00-01-188, filed 12/22/99, effective 2/8/00. Statutory Authority: RCW 43.22.480.
296-150C-1740What are the mechanical requirements for a vendor unit? [Statutory Authority: Chapter 43.22 RCW. WSR 98-14-078, § 296-150C-1740, filed 6/30/98, effective 7/31/98. Statutory Authority: RCW 43.22.340, [43.22.]355, [43.22.]360, [43.22.]432, [43.22.]440 and [43.22.]480. WSR 96-21-146, § 296-150C-1740, filed 10/23/96, effective 11/25/96.] Repealed by WSR 00-01-188, filed 12/22/99, effective 2/8/00. Statutory Authority: RCW 43.22.480.
296-150C-1750What are the LPG system enclosure and mounting requirements for a vendor unit? [Statutory Authority: Chapter 43.22 RCW. WSR 98-14-078, § 296-150C-1750, filed 6/30/98, effective 7/31/98.] Repealed by WSR 00-01-188, filed 12/22/99, effective 2/8/00. Statutory Authority: RCW 43.22.480.
296-150C-1751What are the fuel gas piping design requirements for a vendor unit? [Statutory Authority: Chapter 43.22 RCW. WSR 98-14-078, § 296-150C-1751, filed 6/30/98, effective 7/31/98.] Repealed by WSR 00-01-188, filed 12/22/99, effective 2/8/00. Statutory Authority: RCW 43.22.480.
296-150C-1752Can gas tubing be concealed in a vendor unit? [Statutory Authority: Chapter 43.22 RCW. WSR 98-14-078, § 296-150C-1752, filed 6/30/98, effective 7/31/98.] Repealed by WSR 00-01-188, filed 12/22/99, effective 2/8/00. Statutory Authority: RCW 43.22.480.
296-150C-1753What are the pipe-joint compound requirements for gas piping in a vendor unit? [Statutory Authority: Chapter 43.22 RCW. WSR 98-14-078, § 296-150C-1753, filed 6/30/98, effective 7/31/98.] Repealed by WSR 00-01-188, filed 12/22/99, effective 2/8/00. Statutory Authority: RCW 43.22.480.
296-150C-1754What are the gas piping hanger and support requirements for a vendor unit? [Statutory Authority: Chapter 43.22 RCW. WSR 98-14-078, § 296-150C-1754, filed 6/30/98, effective 7/31/98.] Repealed by WSR 00-01-188, filed 12/22/99, effective 2/8/00. Statutory Authority: RCW 43.22.480.
296-150C-1755What are the electrical bonding requirements for gas piping in a vendor unit? [Statutory Authority: Chapter 43.22 RCW. WSR 98-14-078, § 296-150C-1755, filed 6/30/98, effective 7/31/98.] Repealed by WSR 00-01-188, filed 12/22/99, effective 2/8/00. Statutory Authority: RCW 43.22.480.
296-150C-1756How are gas supply connections in a vendor unit identified? [Statutory Authority: Chapter 43.22 RCW. WSR 98-14-078, § 296-150C-1756, filed 6/30/98, effective 7/31/98.] Repealed by WSR 00-01-188, filed 12/22/99, effective 2/8/00. Statutory Authority: RCW 43.22.480.
296-150C-1757What requirements apply to gas piping system openings? [Statutory Authority: Chapter 43.22 RCW. WSR 98-14-078, § 296-150C-1757, filed 6/30/98, effective 7/31/98.] Repealed by WSR 00-01-188, filed 12/22/99, effective 2/8/00. Statutory Authority: RCW 43.22.480.
296-150C-1758Are gas piping shut-off valves required in a vendor unit? [Statutory Authority: Chapter 43.22 RCW. WSR 98-14-078, § 296-150C-1758, filed 6/30/98, effective 7/31/98.] Repealed by WSR 00-01-188, filed 12/22/99, effective 2/8/00. Statutory Authority: RCW 43.22.480.
296-150C-1759What requirements apply to testing for gas piping leaks before vendor unit appliances are connected? [Statutory Authority: Chapter 43.22 RCW. WSR 98-14-078, § 296-150C-1759, filed 6/30/98, effective 7/31/98.] Repealed by WSR 00-01-188, filed 12/22/99, effective 2/8/00. Statutory Authority: RCW 43.22.480.
296-150C-1760What requirements apply to testing for gas piping leaks after vendor unit appliances are connected? [Statutory Authority: Chapter 43.22 RCW. WSR 98-14-078, § 296-150C-1760, filed 6/30/98, effective 7/31/98.] Repealed by WSR 00-01-188, filed 12/22/99, effective 2/8/00. Statutory Authority: RCW 43.22.480.
296-150C-1770Appliances—Installation. [Statutory Authority: RCW 43.22.340, [43.22.]355, [43.22.]360, [43.22.]432, [43.22.]440 and [43.22.]480. WSR 96-21-146, § 296-150C-1770, filed 10/23/96, effective 11/25/96.] Repealed by WSR 00-01-188, filed 12/22/99, effective 2/8/00. Statutory Authority: RCW 43.22.480.
296-150C-1780Safety devices—Water heater relief valves. [Statutory Authority: RCW 43.22.340, [43.22.]355, [43.22.]360, [43.22.]432, [43.22.]440 and [43.22.]480. WSR 96-21-146, § 296-150C-1780, filed 10/23/96, effective 11/25/96.] Repealed by WSR 00-01-188, filed 12/22/99, effective 2/8/00. Statutory Authority: RCW 43.22.480.
296-150C-1790Plumbing—General. [Statutory Authority: RCW 43.22.340, [43.22.]355, [43.22.]360, [43.22.]432, [43.22.]440 and [43.22.]480. WSR 96-21-146, § 296-150C-1790, filed 10/23/96, effective 11/25/96.] Repealed by WSR 00-01-188, filed 12/22/99, effective 2/8/00. Statutory Authority: RCW 43.22.480.
296-150C-1800Plumbing—Definitions. [Statutory Authority: RCW 43.22.340, [43.22.]355, [43.22.]360, [43.22.]432, [43.22.]440 and [43.22.]480. WSR 96-21-146, § 296-150C-1800, filed 10/23/96, effective 11/25/96.] Repealed by WSR 00-01-188, filed 12/22/99, effective 2/8/00. Statutory Authority: RCW 43.22.480.
296-150C-1810Drainage—Cap or plug. [Statutory Authority: RCW 43.22.340, [43.22.]355, [43.22.]360, [43.22.]432, [43.22.]440 and [43.22.]480. WSR 96-21-146, § 296-150C-1810, filed 10/23/96, effective 11/25/96.] Repealed by WSR 00-01-188, filed 12/22/99, effective 2/8/00. Statutory Authority: RCW 43.22.480.
296-150C-1820Drainage—Clearance from drain outlet. [Statutory Authority: RCW 43.22.340, [43.22.]355, [43.22.]360, [43.22.]432, [43.22.]440 and [43.22.]480. WSR 96-21-146, § 296-150C-1820, filed 10/23/96, effective 11/25/96.] Repealed by WSR 00-01-188, filed 12/22/99, effective 2/8/00. Statutory Authority: RCW 43.22.480.
296-150C-1830Water supply connection. [Statutory Authority: RCW 43.22.340, [43.22.]355, [43.22.]360, [43.22.]432, [43.22.]440 and [43.22.]480. WSR 96-21-146, § 296-150C-1830, filed 10/23/96, effective 11/25/96.] Repealed by WSR 00-01-188, filed 12/22/99, effective 2/8/00. Statutory Authority: RCW 43.22.480.