Observed arrival · 2026-09-17
Rigging Calculators Turns Lift Planning Into Five Quick Checks
A free set of rigging and lifting calculators for shackle sizing, sling tension, wire-rope capacity, crane loads, and chain-sling WLL.
Field notes
The homepage exposes five separate calculation paths rather than one generic form, including shackle selection, sling-angle tension, wire-rope breaking load, crane load moment, and chain-sling capacity. Its visible reference material includes a Crosby shackle table spanning 0.5 to 120 tonnes and a 6×19 IWRC wire-rope table covering 6–40 mm diameters. The crane tool is explicitly labeled preliminary, while the site attributes its methods to ASME B30.9/B30.26, ISO 2408, and EN 818-2.
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Editorial observations of this landing page, not a rating.
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