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PDFWAC 246-359-580

Heating, insulation, and air conditioning.

(1) When the temperature in habitable rooms will fall below seventy degrees Fahrenheit, the TWH must provide heating systems to maintain a temperature of seventy degrees Fahrenheit. Heating systems must be permanent, installed, and comply with DOSH and chapter 246-358 WAC.
(2) Insulation must be installed with a minimum of R-15 insulating material to insulate ceilings and exterior walls. When insulation is used, it must be covered with material which is safe and sturdy and sufficient to protect the building occupants from the insulating material. When insulation is installed in the ceiling, provide a minimum of one inch air space between insulation and roof sheathing and baffle.
(3) When the TWH dwelling unit temperature can rise above ninety degrees Fahrenheit during occupancy, the TWH dwelling unit must provide a coolant system to maintain a temperature at or below ninety degrees Fahrenheit.
(4) TWH buildings containing dwelling units must be provided with a one hundred cubic feet per minute (CFM) building ventilation fan capable of operating intermittently. Where an intermittent fan is installed in dwelling units with food-handling facilities, an additional building ventilation fan is not required.
(5) This section does not apply to cherry harvest camps.
[Statutory Authority: Chapter 70.114A RCW and RCW 43.70.334 through 43.70.340. WSR 15-13-091, § 246-359-580, filed 6/15/15, effective 1/1/16. Statutory Authority: RCW 70.114A.081. WSR 99-03-065, § 246-359-580, filed 1/18/99, effective 2/18/99.]
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