Moving a truss through a restricted lifting route
A fabricated roof truss will be hoisted with temporary walkways and erection hardware attached. Its mass distribution is not symmetric because one end carries an attached platform. The lifting arrangement introduces inclined sling forces and uses a below-hook device with a defined orientation. The crane will swing into a different operating sector and the loaded radius may be greater than the unloaded setup value. Part of the route passes behind an existing wall, requiring a signaller handover, and a control line would cross a worker's escape path unless repositioned. The landing supports are ready, but their stability and restraint still need confirmation. The lift review must cover the whole suspended assembly and movement rather than simply compare the permanent truss weight with the crane's largest advertised capacity.
1. What load and equipment checks are needed before motion?
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Include all suspended attachments, establish the actual centre of gravity and shares, and verify sling geometry and the device's rated orientation. Use the applicable loaded-radius and sector chart with its required deductions and confirm ground and lifting-point conditions.
2. How should the travel and landing plan address the interface hazards?
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Verify the full clearance envelope, establish a controlled signaller handover, and reposition control lines so workers retain safe positions and escape routes. Stop safely on incomplete communication. Confirm the required stable support and restraint before releasing the lifting system.