Oversees the entire operation, ensures structural readiness, and coordinates site logistics.
Note: The following assumes a standard top-slewing saddle-jib crane being dismantled by an external mobile crane.
Option B: Section Removal by Mobile Crane
The following steps outline the typical dismantling procedure for a tower crane: tower crane dismantling method statement
A successful dismantling operation relies on a clearly defined chain of command. The core team consists of:
Before any physical dismantling begins, a significant amount of preparatory work is required. A risk assessment must be conducted to identify hazards such as falling objects, electrical lines, unstable ground, and adverse weather. This assessment forms the basis for all safety measures in the method statement. Detailed planning for logistics, such as the transport of dismantled components off-site, should also be coordinated, including necessary traffic permits and road closures. Ultimately, a comprehensive plan for the erection, jumping, and dismantling of the tower crane must be developed. This plan is typically required to be approved by a licensed professional engineer and submitted to relevant authorities.
Hoist the slewing assembly clear of the mast and lower it directly onto a flatbed transport vehicle. Step 5.6: Mast Section Demobilization Unbolt and remove the climbing cage (if applicable). Attach the lifting accessories to the topmost mast section. Loosen and remove the high-tensile mast bolts or pins. The core team consists of: Before any physical
The crane is positioned according to the manufacturer’s "out of service" instructions to ensure it is balanced for the initial lifts. Phase B: Removal of Counterweights
The trolley is retracted to the minimum radius and secured. The hook block is lowered and disconnected. Counterweights:
When the last section is lowered and the sky is empty, the only thing left is a concrete pad and a signed closure report. That is the quiet signature of a successful dismantle. Detailed planning for logistics, such as the transport
Bolt and torque the structural joints. Repeat until the crane reaches minimum freestanding height. Step 5.2: Counter-Weight Removal (Partial)
Remove the main heel pins connecting the counter-jib to the slewing platform. Lower the counter-jib safely to the ground. Step 6: Cathead (Tower Head) and Cabin Removal
When in doubt, stop. Re-evaluate. Then proceed.