Tower Crane Dismantling Method Statement High Quality Official

Tower cranes are commonly used in construction sites to lift and move heavy loads. However, when a construction project is completed, the tower crane needs to be dismantled and removed from the site. Dismantling a tower crane is a complex process that requires careful planning, specialized equipment, and trained personnel. This method statement outlines the steps and procedures for safely dismantling a tower crane.

The main jib is rigged, the pins are driven out, and the assist crane lowers the jib to the ground for further disassembly. Counter-Jib:

Isolate all non-essential electrical systems, leaving only the slewing and hoist power active if required for balancing.

Hoist slightly with the mobile crane to take up slack and relieve tension on the jib tie rods/pendants. tower crane dismantling method statement

From a legal standpoint, all work must be conducted in strict accordance with the manufacturer's written instructions. If these are not available, the procedure must follow recognized consensus standards, such as ASME B30.3, and local regulations like OSHA 1926 Subpart CC in the US. All safety devices on the crane must have been calibrated within a specified period (e.g., the preceding three months) before the dismantling begins.

An emergency rescue plan for recovering an injured worker from height must be reviewed during the morning briefing.

Ensure all necessary permits (e.g., Permit to Lift, Working at Height Permit, Road Closure Permit) are signed and active. 4. Required Tools and Equipment Tower cranes are commonly used in construction sites

If removed fully, the assist crane takes the weight of the entire jib.

Terminate the main power supply to the crane hook and slewing motors. Lock out and tag out (LOTO) the main electrical panel.

Confirm work will only proceed if wind speeds are below the manufacturer's specified limits. 4. Dismantling Sequence (Top-Down Approach) This method statement outlines the steps and procedures

Lift the section clear, lower it to the floor, and repeat the process sequentially for all remaining mast sections.

Clear the mobile crane setup area of all debris, materials, and non-essential personnel.

The general sequence for dismantling a tower crane using a mobile crane is essentially the reverse of its assembly. The following steps are typical in a method statement:

Attach the rigging to the tower head, unbolt its connection from the slewing ring, and lift it clear.

A safe lift requires an uncompromised chain of command. Every individual on the crew must understand their specific duties.