WAC 296-155-805. Removal of walls, floors, and material with equipment

(1) You must not use mechanical equipment on floors or working surfaces unless such floors or surfaces are of sufficient strength to support the imposed load. (2) Floor openings must have curbs or stop-logs to prevent equipment from running over the edge. (3) Mechanical equipment used must meet the requirements specified in parts M and R of this chapter, cranes must meet the requirements in Part L of this chapter.