AS/NZS 1891.4:2009 Industrial Fall-Arrest Systems and Devices - Selection, Use and Maintenance 3.1.1: 3.1.1 Anchorage selection and strength (Table 3.1)

Anchorage type and location depend on the task and the structure; some structures cannot give adequate strength, and other protection methods based on risk assessment are then needed. Minimum ultimate strengths in the direction of loading (Table 3.1, or AS/NZS 5532 after Amendment 1): single-point anchorage for free fall-arrest of one person 15 kN; two people on one anchor 21 kN; limited free fall-arrest, rope access anchors included, 12 kN; restraint technique 15 kN where the worst-case fall would be a free fall and 12 kN where it would be limited free fall; horizontal lifeline intermediate anchorages 12 kN where diversion is under 15 degrees and 12 kN plus the horizontal fall-arrest force component times a safety factor of 2 where it is 15 degrees or more; end anchorages per clause 6.2.4. Where practicable, one-person single anchors should be rated 15 kN whatever their category. Ultimate strength means the anchorage may yield at the load but must not fail.