A stairway, ladder, ramp or other safe means of egress must be located in trench excavations that are 4 feet (1.22 m) or more in depth so as to require no more than 25 feet (7.62 m) of lateral travel for employees. Designed to prevent slipping.
Pitching wedges have a loft of between 46 and 48 degrees. Approach wedges have lofts between 50 and 52 degrees. The extra loft on the approach wedge helps it to get up in the air, but decreases the distance hit.
A wedge is a triangular-shaped solid inserted between two parts in order to prevent movement between them or to force them apart. Drive a triangular wedge into the gap to keep the two parts separate. A tapered metal wedge was slid between the flat face of one bar and the curved face of the next. A wedge is a triangular shaped solid inserted between two parts in order to prevent movement between them or to force them apart.