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Fall Calculations

Calculating fall clearance distance

Personal Fall Arrest System Anchorage Points

Calculating Fall Clearance Distance Using a Retractable Lifeline

  • First, add the maximum free fall distance (2 ft.) with a retractable lifeline to the maximum deceleration distance (3-1/2 ft.) to the average height of a worker (6 ft.).
  • Then, add a safety factor of 3 ft. to allow for the possibility of an improperly fit harness, a taller than average worker and/or a miscalculation of distance.
  • The total, 14-1/2 ft. is the suggested safe fall clearance distance for this example.

Part # Description
16STL15-SRL 15′ SRL Tagline
16STL20-SRL 20′ SRL Tagline
16STL25-SRL 25′ SRL Tagline
16STL30-SRL 30′ SRL Tagline
16STL50-SRL 50′ SRL Tagline
16STL100-SRL 100′ SRL Tagline


Personal Fall Arrest System Anchorage Points

Calculating Fall Clearance Distance Using a Shock-Absorbing Lanyard and D-Ring Anchorage Connector

  • First, add the length of the shock-absorbing lanyard (6 ft.) to the maximum elongation of the shock absorber during deceleration (3-1/2 ft.) to the average height of a worker (6 ft.).
  • Then, add a safety factor of 3 ft. to allow for the possibility of an improperly fit harness, a taller than average worker and/or a miscalculation of distance.
  • The total, 18-1/2 ft. is the suggested safe fall clearance distance for this example.

Part # Description
16ATLD2-15 25′ Tagline / 10′ Coated Orange / 15′ Yellow Tube
16ATLD2-20 25′ Tagline / 10′ Coated Orange / 15′ Yellow Tube
16ATLD2-25 25′ Tagline / 10′ Coated Orange / 15′ Yellow Tube
16ATLD2-30 30′ Tagline / 15′ Coated Orange / 15′ Yellow Tube
16ATLD2-35 35′ Tagline / 15′ Coated Orange / 20′ Yellow Tube
16ATLD2-40 40′ Tagline / 20′ Coated Orange / 20′ Yellow Tube

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