You also requested clarification on when employees must tie off when a guardrail system is removed to facilitate hoisting operations.
Cable guardrail system osha.
Guardrail systems safety net systems personal fall arrest systems positioning device systems and their components shall conform to the criteria in 1926 502 see appendix g to this subpart.
When guardrail systems are used at hoisting areas a chain gate or removable guardrail section shall be placed across the access opening between guardrail sections when hoisting operations are not taking place.
1926 760 d 2 fall arrest system components shall be used in fall restraint systems and shall conform to the criteria in 1926 502 see appendix g.
1910 29 b 1 the top edge height of top rails or equivalent guardrail system members are 42 inches 107 cm plus or minus 3 inches 8 cm above the walking working surface.
For any area with a floor or wall opening such as a stairway or access hole a standard railing is required on the exposed side of the structure.
1926 502 b 11 when guardrail systems are used at holes they shall be erected on all unprotected sides or edges of the hole.
This responds to your june 1 1999 letter to the occupational safety and health administration osha requesting information on wire rope and crosby clips used around the perimeter of buildings as a guardrail.
Construction sites with vertical drops of 6 feet or more may use a guardrail system instead of other osha approved safety measures.