1910.23 – Guarding Floor/Wall Openings
(1) Stairway floor openings – guarded by standard railing
(2) Ladderway floor openings/platforms-guarded by standard railing/toeboard
(3) Hatchway/chute floor opening – guarded by hinged cover or removable railing/toeboard
(4) Skylight floor opening/hole – guarded by standard skylight screen of fixed standard railing
(5) Pit and trap opening-cover/attendant/railing