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.
Sight distance is the length of highway visible to a driver. A safe sight distance is the. distance needed by a driver on an arterial, or a driver exiting a driveway or street, to. verify that the road is clear and avoid conflicts with other vehicles. Sight lines must be.