Steps and platforms should have a nonslip surface. In the case of straight ladders, flattened rungs are preferable to
round rungs. Non-slip bases (ladder feet) should be securely bolted, riveted, or attached by equivalent construction
to the side rails of all types of straight and extension ladders. Metal stepladders should have insulating, non-slip
material on the bottom of all four rails.
Straight Ladders