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 gap wedge is usually lofted at 52 degrees, although can be some variation. Pitching wedges usually have a loft of about 48 degrees (although older pitching wedges sometimes have higher lofts), while sand wedges usually range from 55 to 58 degrees. This leaves a gap in loft that the gap wedge is designed to fill.