Section R. 408.41254 - Carpenter's bracket scaffoldRule 1254.
(1) Each bracket, except those for wooden bracket-form scaffolds, shall be attached to the supporting formwork or structure by means of 1 or more of the following: (b) A metal stud attachment device.(c) Welding, hooking over a secured structural supporting member, with the form wales either bolted to the form or secured by snap ties or tie bolts extending through the form and securely anchored.(d) For carpenters' bracket scaffolds only, by a bolt extending through to the opposite side of the structure's wall.(2) The supporting brackets shall be fastened to the structure by 1 of the following: (a) Three-eighths-inch diameter bolts extending through the studs at the top of the bracket and projecting 3/4 inch beyond the nut and washer when in place.(b) Welding to a metal tank.(c) Hooked over a secured supporting member of the structure.Mich. Admin. Code R. 408.41254
1981 AACS; 2013 AACS; 2016 MR 16, Eff. 8/17/2016