ARCHIVED REPORTS XR0011680 - Laserfiche WebLink

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ZQWM- a method of excavation whereby the faces of an excavation or trench are laid back to provide protection from moving ground. BVil - the earth material that is removed in the formation of an excavation. 2dn=- the horizontal members of the shoring system whose sides bear against the uprights. Stringers are sometimes called whalers. - a structural member designed to resist forces, either tensional or compressional. larch- an excavation made below the surface of the ground. In general, the depth is greater that the width at the bottom, but the width of a trench at the bottom is not greater than 15 feet. Trench Shield - a protective device which shields workers from the effect of ground movement and which can be moved along as work progresses. Uprights - the vertical members of the shoring system. MMer - a structural member in a horizontal or nearly horizontal position used for stiffening or securing other components of concrete forms, excavation sheeting, or similar temporary structures. EXCAVATION PROCEDURES (also trenches, shafts, and other earthwork) 1. Prior to beginning an excavation, the location of all underground utilities and other underground hazards shall be determined. 2. A hazard assessment shall be conducted by a qualified person to evaluate the potential exposure to employees who may work in or around the excavation. 3. The excavation shall also be inspected by a qualified person after each rain or other hazard-increasing event to evaluate the potential hazards from slides or cave- ins. 4. Anytime an employee enters an excavation 5 feet or greater in depth, that employee must be protected by a system of shoring, sloping, benching, or attemative means addressed in #15 below. 5. The conditions in #4 above, will also require Groundwater Technology to obtain the necessary excavation permit and/or notification procedures with Cal-OSHA. �. Fx&TRNCH.POL/MG #2 err