KSTRONG ASIA CATALOGUE

UNDERSTANDING FALL PROTECTION Calculating Fall Clearance

Shock Absorbing Lanyard

Fall clearance is the distance required to prevent workers from hitting the ground or lower level, in case of a fall. Here is how to calculate fall clearance: Required Distance = Lanyard Length + Deceleration Distance + Height where work is happening + Safety Factor Correct calculation ensures that the operator’s fall arrest system will activate so they are not injured by coming into contact with any obstructions below.

RD = FFD + DD + C RD = Required Distance

Working surface to Nearest Obstruction

FFD = Free Fall Distance

2.0m Maximum allowed DD = Energy Absorber Deceleration Distance + D-Ring Slide and Harness Stretch C = Clearance to Obstruction During Fall Arrest (1.0m minimum safety factor required)

Working Surface

FFD

RD

DD

FFD 600mm 1000mm 1500mm 2000mm

Extension 300mm 500mm 600mm 900mm

C

Nearest Obstruction

Self Retracting Lifeline

RD = Required Distance is 2.0m Required distance below working surface to Nearest Obstruction

Working Surface

RD

Nearest Obstruction

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