R 408.40927 Definitions; T, U.

Rule 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.