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.
1.) Effe ctive* corner radius of forty feet (40') or less. The beginning of the approach radius shall be at least twenty. feet (20') from the angular bisector as measured along the. face of curb or pavement edge when no sidewalks are involved.