CM 2215 Excavations Questions with correct

CM 2215 Excavations Questions with correct worksheet worksheet earth OSHA defines an excavation as any man man-made cut, cavity, trench, or depression in the earth's surface formed by ____ removal deeper a trench is defined as a narrow underground excavation that is _____ than it is wide 15 a trench cannot be wider than ____ feet 5 cave in protections required for all excavations greater than ____ feet in depth unless they are entirely in solid stable rock 25, 4 a ladder must be provided every ____ feet for excavations greater than ____ feet in depth 2 spoil piles, material, and equipment must be kept ____ feet from excavation daily excavation inspections must be conducted _____ and before start of work classification excavation inspections must be conducted to determine soil _______ sloping shoring shielding benching cave in protection includes: stable rock natural solid mineral material that can be excavated with vertical sides 1.5 Type A: cohesive soils with an unconfined compressive strength of ____ tons per square foot (tsf) 0.5 Type B: cohesive soils with an unconfined compressive strength greater than _____ tsf but less than 1.5 tsf 0.5 Type C: cohesive soils with a unconfined compressive strenght of _____ tsf of less 12 Type A soil can be sloped at a ratio of 1/2 : 1 if the excavation will be open for less than 24 hours and is less than _____ feet in depth 20 any excavation more than ____ feet in depth requires a qualified person to design the protection manual the classification of soil shall be made based on the results of at least one visual and one ______ analysis conducted by a competent person notes notes