The rigging configuration, spreader bar length and sling lengths are specified in the erection booklet prepared by the erection designer. The crane size and boom lengths are determined by the crane company.

Before the panels are cast, have the crane company representative assist in the layout to ensure that the panels can be lifted in the sequence cast.

• Provide the crane company with a set of panel lifting details well before the day of lifting so that they can plan necessary rigging.
• Double-check that the rigging configuration and that the spreader bars and slings are the correct length.
• Watch for ditches, holes and overhead obstructions that might prevent the crane from moving.
• Have a safety meeting at the beginning of the erection to ensure that everyone knows what is expected and how to operate safely.
• Make certain everyone on the rigging crew knows how the lifting hardware is supposed to work.