Section R. 408.40206 - Restricted zone requirementsRule 206.
(1) For walls greater than 8 feet in height, a restricted zone shall be established prior to the start of the construction of the wall. The restricted zone shall meet all of the following requirements (see figure 1): (a) Be equal to the height of the constructed wall plus a minimum of 4 feet and run the entire length of the wall plus a minimum of 4 feet beyond the ends of the wall.(b) Be established on both sides and ends of the wall.(c) Be limited to entry by employees trained in accordance with R 408.40205.(d) Remain in place until the wall has obtained its final lateral support.(e) Be delineated by signing in accordance with R 408.40207.(2) When a restricted zone extends onto or across roadways or other adjacent areas, protection shall be provided as prescribed in construction safety standard part 22 signals, signs, tags, and barricades, R 408.42223 traffic control, or by other methods.(3) If restricted zones cannot be installed or maintained as prescribed by these rules, alternative protective methods shall be provided. Drawings/plans or calculations shall be prepared by a qualified person and available at the jobsite.
(4) For multi-story structures the restricted zone shall be determined by a qualified person.Mich. Admin. Code R. 408.40206