Protection of Open-sided Floors, Platforms, and Runways [1910.23(c)]

1910.23(e)(3)(i) For wood railings, the posts shall be of at least 2-inch by 4-inch stock spaced not to exceed 6 feet; the top and intermediate rails shall be of at least 2-inch by 4-inch stock. If top rail is made of two right-angle pieces of 1-inch by 4-inch stock, posts may be spaced on 8-foot centers, with 2-inch by 4-inch intermediate rail.
1910.23(e)(3)(ii) For pipe railings, posts and top and intermediate railings shall be at least 1 ½ inches nominal diameter with posts spaced not more than 8 feet on centers.
1910.23(e)(3)(iii) For structural steel railings, posts and top and intermediate rails shall be of 2-inch by 2-inch by 3/8-inch angles or other metal shapes of equivalent bending strength with posts spaced not more than 8 feet on centers.
1910.23(e)(3)(iv) The anchoring of posts and framing of members for railings of all types shall be of such construction that the completed structure shall be capable of withstanding a load of at least 200 pounds applied in any direction at any point on the top rail.
1910.23(e)(3)(v) Other types, sizes, and arrangements of railing construction are acceptable provided they meet the following conditions:
1910.23(e)(3)(v)(a) A smooth-surfaced top rail at a height above floor, platform, runway, or ramp level of 42 inches nominal; 1910.23(e)(3)(v)(b) A strength to withstand at least the minimum requirement of 200 pounds top rail pressure;
1910.23(e)(3)(v)(c) Protection between top rail and floor, platform, runway, ramp, or stair treads, equivalent at least to that afforded by a standard intermediate rail.
1910.23(c)(1) Every open-sided floor or platform 4 feet or more above adjacent floor or ground level shall be guarded by a standard railing (or the equivalent as specified in paragraph (e)(3) of this section) on all open sides except where there is entrance to a ramp, stairway, or fixed ladder. The railing shall be provided with a toeboard wherever, beneath the open sides,
1910.23(c)(1) Every open-sided floor or platform 4 feet or more above adjacent floor or ground level shall be guarded by a standard railing (or the equivalent as specified in paragraph (e)(3) of this section) on all open sides except where there is entrance to a ramp, stairway, or fixed ladder. The railing shall be provided with a toeboard wherever, beneath the open sides,