Bucking Chute Platform Stairs - Hi-HogCatwalk Stairs The heavy duty steel construction stairs come with checker plate treads and a solid handrail. While this is an optional item it is highly recommended as the catwalks are mounted 32 above grade. The handrail can be bolted onto either side of the stairs. The stairs can be mounted to the center of any of the catwalk sections. Catwalk Stairs, Item #1770 Catwalk Stair Specs: Length: 29 Width of stair tread: 24 Height of catwalk from finished