Rigging and signal signs – common language between ground and cabin
How you estimate the cost of your own work
A crane lift is rarely a one-person job. On the ground stands the slinger who fastens the load and guides you because from up in the cab you cannot always see everything. The relationship between you is the core of a safe lift — and it is built on a shared unambiguous language.
§Rigging – attach the load correctly
That rigging is about securing the load so it hangs safely and in balance. It requires the right equipment — chains, straps, yokes — in the right dimension, and that the attachment points can bear. If the load is askew or loose, it can tip or slide during lifting.
- 01Choose gear that can carry the load's weight with margin
- 02Secure at points that can hold, so the load hangs in balance
- 03Protect straps against sharp edges
- 04Check that nothing can slide or catch on the way
§Signal sign — unambiguous every time
When the load is out of your sight the rigger's signals are the only thing you have to go by. That's why the signals must be fixed and known to both of you – or you use radio with clear speech. Agree in advance who gives the signals. Only one person at a time operates the crane.
§When there are several of you
For large or complicated lifts multiple people can be involved. Then it is even more important with clear roles: one signals the rest stay away from the danger zone. Unclear about who has control of the lift is one of the most dangerous situations there is — clarify it before you start.