WAC 296-56-60139
Hoistway enclosures and landings. Hoistways shall be fully enclosed, or enclosed on all landings to a height of six feet above the landing floor or six feet above highest working level or stair level adjacent to the hoistway. Perforated hoistway enclosures can be used where fire resistance is not required, provided:
(1) Steel wire grill or expanded metal grill shall be at least thirteen U.S. gauge steel wire.
(2) Openings in the enclosure shall reject a one inch steel ball.
(3) All hoistway landings shall be properly and adequately lighted.
[Statutory Authority: RCW 49.17.040 and 49.17.050. 86-03-064 (Order 86-02), § 296-56-60139, filed 1/17/86; 85-01-022 (Order 84-24), § 296-56-60139, filed 12/11/84.]