Sequence is a safety control
A structure designed to work when complete may be unstable partway through erection. The method must establish which members are placed first, which connections are completed and which braces stabilise each stage. These decisions require coordination with the structural designer.
Preparing assemblies and protective measures at ground level reduces later work at height. Plan deliveries, storage, crane radius and access so that missing components do not force unplanned sequence changes. The Lifting plan must reflect the actual erection arrangement.
Bases, connections and bracing
Before columns are positioned, check that foundations, anchors and bearing surfaces meet the relevant documentation. A displaced or damaged anchor rod must not be repaired through improvisation: changes may affect the assembly’s capacity and need technical assessment.
The erection plan determines when a member can be released from the crane. No single bolt count is appropriate for every connection. The plan also identifies temporary guys or props, their purpose and who can authorise removal. Their presence must be considered when planning access and subsequent work.
Provide access for connection work
Connections require a suitable workplace and access, such as a mobile elevating work platform compatible with the surroundings. Verify its support and travel route alongside those of the crane. The steelwork itself must not become an improvised access route.
Control falling tools and separate activities below erection work. Protect lifting slings from sharp edges and use the planned method for guiding members, without placing people between moving components and fixed objects. Access arrangements must include a practicable emergency response.
Manage loading and changes
Decking packs, materials and equipment add loads before the structure is complete. Place them only where capacity and load distribution have been verified. Packaging straps must not serve as lifting accessories unless specifically designed for that purpose.
Wind, collisions, sequence changes and incomplete connections can alter stability. Review what has been erected, what still depends on temporary support and what work is permitted. This information must remain clear when crews change or responsibility passes to another contractor.
