Section SPS 375.16 - Platforms(1) Each platform of an "A" type fire escape shall be at least 28 inches wide; each platform of a "B" type fire escape shall be at least 3 feet 4 inches wide. Such widths shall be the clear distance between stringers, measuring at the narrowest point. Each platform shall extend at least 4 inches beyond the jambs of exit openings. The above minimum widths and lengths shall be increased wherever necessary, so that no exit door or window will, when open, block any part of the required width of the fire escape.(2) Every platform shall consist of either: (a) Flat bars on edge, not less than 1 x 1/ 4 inch; but not less than 1 1/4 x 1/4 inch where bolts and separators are used; bars shall be not more than 1 1/4 inches center to center.(b) 1/2 inch or 5/8 inch square bars with sharp edge up, more than 1 1/2 inches center to center.(c) 5/8 inch round bars, not more than 1 1/2 inches center to center.(3) Platform and treads may be solid if covered by a roof.(4) The platform frame shall consist of not less than 2 x /8 inch flat bars on edge or equivalent, provided the brackets are not more than 4 feet apart. If brackets are more than 4 feet apart, the frame shall be correspondingly stronger and stiffer. Every platform wider than 30 inches, if made of square or round bars, shall have a third frame bar through the center; if made of flat bars, the platform shall have separators and bolts through the center. Frame bars shall not project more than 1/4 inch above platform bars, except around the outside of platform.(5) There shall be a platform at each story above the first and intermediate platforms if floors are more than 18 feet apart vertically.(6) Platforms shall not be more than 8 inches below the door sill, or not more than 18 inches below the sill of exit windows; see s. SPS 375.14.Wis. Admin. Code Department of Safety and Professional Services SPS 375.16
1-2-56; renum. and am., Register, September, 1974, No. 225, eff. 10-1-74; correction made under s. 13.93(2m) (b) 7, Stats., Register, June, 1995, No. 474; correction in (6) made under s. 13.92(4) (b) 7, Stats., Register December 2011 No. 672.