Rigging is where a lift is won or lost. Even a perfectly set-up crane cannot compensate for a load that is badly slung. These are the five mistakes we see most often in practical assessments.
1. Guessing the load weight
Every rigging decision depends on weight. Use drawings, delivery notes or calculations, and never rely on “it looks about right”.
2. Ignoring sling angles
As the angle between sling legs increases, the tension in each leg rises sharply. A two-leg sling at a wide angle can be overloaded long before the load reaches the sling’s marked capacity.
3. Missing the centre of gravity
If the hook is not above the centre of gravity, the load will tilt or swing when it leaves the ground. Lift a few centimetres first and check before going higher.
4. Unprotected sharp edges
Textile and wire slings can be cut by steel edges under load. Use edge protection every time a sling bends around a corner.
5. Using damaged or unmarked gear
If an accessory has no legible marking or shows damage, quarantine it. Unknown capacity means unknown risk.
Good rigging is a sequence: weigh, plan, select, inspect, attach, test-lift, then lift.
