Work out anchor point load instantly with clear inputs, formula shown and shareable results.
An anchor must resist the arrest force of every worker attached, multiplied by a safety factor, and also satisfy the prescriptive minimum in the standard, commonly 12 kN or 15 kN per attached worker. The design load is the greater of the two, and on shared horizontal lifelines the line geometry can multiply the load on end anchors considerably.
Design load
Design = max(workers x arrest force x safety factor, workers x code minimum)
Preliminary estimate only. Anchor points must be designed, installed and certified by a competent engineer and proof tested where required.
Design = max(workers x arrest force x safety factor, workers x code minimum). An anchor must resist the arrest force of every worker attached, multiplied by a safety factor, and also satisfy the prescriptive minimum in the standard, commonly 12 kN or 15 kN per attached worker.
No. It must be verified for the design load in the direction of loading, including the fixing into the substrate. An untested anchor is the commonest defect found in fall protection audits.
This calculator takes 4 inputs: Workers attached, Arrest force per worker, Safety factor on the anchor, Code minimum capacity per worker. The pre-filled defaults are a realistic worked example — replace them with your own site or project figures.