Purpose of Program Review. Program Review is a systematic way to assess the quality of SIUE's academic programs and determine ways to improve the quality of education, scholarship, and service.
Sheeting means the members of a shoring system that retain the earth in. position and in turn are supported by other members of the shoring system. See. figure 2.0. Shield (Shield system) means a structure used in an excavation to withstand. cave-ins and which will protect employees working within the shield system.
Trenching and Excavation Safety. Excavation and trenching are among the most hazardous construction operations. OSHA defines an excavation as any man-made cut, cavity, trench, or depression in the earthâs surface formed by earth removal. A trench is defined as a narrow underground excavation that is deeper than it is wide, and is no wider than 15 feet (4.5 meters). Dangers of Trenching and Excavation Cave-ins pose the greatest risk and are much more likely than other excavationrelated accidents to result in worker fatalities.