Section R. 408.40927 - Definitions; T, URule 927.
(1) "Tabulated data" means tables and charts approved by a registered professional engineer and used to design and construct a protective system.(2) "Toe of slope" means the point at which the side of an excavation intersects the lowest level of the excavation.(3) "Trench" means an excavation having a depth greater than its width measured at the bottom.(4) "Trench jack" means a screw or hydraulic jack used as a brace in a trench shoring system.(5) "Trench shield," sometimes called a trench box, means a trench shoring system composed of steel plates and bracing, welded or bolted together, which can be moved along as work progresses.(6) "Uprights" mean the vertical members of a trench shoring system.Mich. Admin. Code R. 408.40927
1979 AC; 2023 MR 24, Eff. 1/3/2024