Fix each mast section, unbolt it, and use the assist crane to fetch it out of the climbing cage. If dismantling directly via mobile crane: Attach the rigging to the top mast section. Unbolt the high-tensile mast bolts.
Ensure the crane foundation or anchor bolts are safely protected, cut down, or isolated according to project hand-over requirements.
Before commencing dismantling work, the following checks will be carried out:
The crane is rotated to the pre-agreed "parked" position to allow the assist crane access.
Any site-specific space restrictions or proximity to nearby buildings.
(If the crane is equipped with a climbing frame/cage for self-lowering)
Fall arrest systems, specialized access platforms, and communication equipment (radios). 4. The General Dismantling Sequence
Before work commences, several logistical and safety hurdles must be addressed:
Disconnect the jib tie rods/pendant bars from the tower top/A-frame.
Method Statement: Tower Crane Dismantling The dismantling of a tower crane is one of the most high-risk phases of a construction project. Unlike installation, where the site is often clear, dismantling usually occurs when the building is nearly finished, leaving limited space and tighter logistics.
Ensure outrigger mats or steel plates are positioned correctly. 6. Step-by-Step Dismantling Sequence
Attach the mobile crane rigging to the designated lifting lugs on the counter-jib. Apply tension to support the counter-jib load.
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The success and safety of any dismantling operation are directly proportional to the quality of planning undertaken before the first bolt is loosened.
The climbing frame is attached to the upper section of the tower.
