Clearance Distances to be Confirmed - Clearance distance must be sufficient to prevent a worker from striking the ground, an objects, or level below the area.
L = Initial length or lanyard, energy absorber, and connecting hardware
B = Height of D-ring measured from the workers feet
C = Distance between anchor point and unguarded edge
EAE Energy Absorber Extension
DS = D-ring slippage (typically 1 foot)
SM = Safety margin (typically 3 feet)