This method statement covers the safe dismantling of a [Insert Crane Model] tower crane from a [Insert Site Address] construction site. The objective is to reduce the crane to manageable components using a mobile assist crane (or climbing crane/jib crane method) with zero incidents.
Project: [Project Name]
Location: [Site Address]
Crane Details: [Make, Model, Serial No., Max Capacity, Jib Length, Height under Hook, Mast sections]
Date of Dismantling: [Planned Date(s)]
Prepared by: [Name, Role]
Approved by: [Site Manager / Project Director]
Dismantling a tower crane is widely regarded as one of the most hazardous operations in the construction industry. Unlike erection, which occurs on a relatively clean site, dismantling often takes place in confined spaces, near completed structures, and under strict time constraints. A Tower Crane Dismantling Method Statement is a critical document that outlines the safe, systematic procedure for taking a crane down piece by piece. This article provides a detailed, professional guide to creating and executing such a method statement, ensuring compliance with safety regulations (such as OSHA, HSE, or local standards) and minimizing risk to personnel and property.
Dismantling a tower crane requires a meticulous, top-down sequence—involving hook block removal, counterweight reduction, and jib disassembly—to maintain structural balance. Key safety requirements include comprehensive risk assessments, strict adherence to manufacturer manuals, and mandatory site exclusion zones. Read the full method statement at Scribd. Method Statement Dismantle Tower Crane - Scribd
Tower Crane Dismantling Method Statement
Introduction
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.
Scope of Work
The scope of work includes the dismantling of a [insert type/model] tower crane, located at [insert location], to a height of [insert height] meters. The crane has a lifting capacity of [insert capacity] tons and consists of [insert number] sections.
Pre-Dismantling Activities
Before dismantling the tower crane, the following activities will be carried out:
Dismantling Procedure
The dismantling procedure will be carried out in the following stages:
Stage 1: Preparation
Stage 2: Dismantling of Crane Sections
Stage 3: Removal of Crane Components
Stage 4: Final Activities
Safety Measures
The following safety measures will be implemented during the dismantling process:
Equipment and Tools
The following equipment and tools will be used during the dismantling process:
Quality Control
The following quality control measures will be implemented during the dismantling process:
Environmental Considerations
The following environmental considerations will be taken into account during the dismantling process:
Conclusion
The dismantling of a tower crane is a complex process that requires careful planning and execution. This method statement outlines the steps and procedures for safely dismantling a tower crane. By following this method statement, the risk of accidents and injuries can be minimized, and the dismantling process can be completed efficiently and effectively. tower crane dismantling method statement
A Tower Crane Dismantling Method Statement is a critical safety document that outlines the step-by-step procedure for removing a crane from a construction site.
Below is a standard framework for this document. Note: This must be tailored to the specific crane model, site constraints, and local safety regulations by a qualified engineer. 1. Project Overview & Scope Project Name/Location: [Insert Details]
Crane Specifications: Make, model, jib length, and current height under hook.
Objective: To safely decommission and remove the tower crane using a mobile assist crane. 2. Personnel & Responsibilities
Appointed Person (AP): Responsible for the lift plan and overall management. Crane Supervisor: Oversees the dismantling team on-site.
Slinger/Signallers: Responsible for attaching loads and directing the assist crane.
Crane Technicians/Erectors: Skilled team performing the mechanical disassembly. 3. Equipment & Tools
Assist Crane: [Insert Capacity, e.g., 200-ton Mobile Crane] with sufficient boom length.
Hand Tools: Torque wrenches, impact drivers, drift pins, and sledgehammers.
Safety Gear: Full-body harnesses, fall arrest lanyards, radios, and standard PPE (Hard hats, boots, hi-vis). 4. Pre-Dismantling Requirements
Exclusion Zone: Establish a physical barrier around the radius of the crane and the loading area to prevent unauthorized access.
Weather Check: Confirm wind speeds are below the manufacturer’s limit for dismantling (typically <10 m/s).
Ground Conditions: Verify the mobile crane standing area is compacted and capable of bearing the outrigger loads. 5. Step-by-Step Dismantling Procedure Phase A: Preparation This method statement covers the safe dismantling of
Position the mobile assist crane and set outriggers on spreader mats.
Trolley the tower crane to the minimum radius and engage the slew lock.
Disconnect the main power supply and switch to the assist crane’s auxiliary power if required. Phase B: Counterweights & Jib
Counter-Jib Weights: Remove the specified number of counterweight blocks as per the manufacturer's manual to maintain balance.
The Jib: Attach the assist crane to the jib at designated lifting points. Remove pins and lower the jib to the ground for further disassembly.
The Counter-Jib: Remove the remaining counterweights, then rig and lower the counter-jib. Phase C: Tower Head & Cab
Rig the tower head/apex and disconnect it from the slewing ring. Lower to the transport vehicle. Disconnect and lower the operator’s cabin. Phase D: Slewing Assembly & Tower Sections Unbolt the slewing ring/gear assembly and lower it.
Systematically unbolt and remove tower sections (masts) one by one. If a climbing frame was used, dismantle and lower it last. 6. Safety & Environmental Controls
Fall Protection: 100% tie-off policy for all technicians working at height.
Communication: Dedicated radio channel for the lead signaller and mobile crane operator.
Waste Management: Ensure no hydraulic fluids leak during hose disconnection; use drip trays where necessary. 7. Emergency Procedures
Contact details for the nearest hospital and site first aid station. Rescue plan for a technician stranded at height.
The exact sequence varies by crane type (topless, flat-top, or hammerhead) and dismantling method (mobile crane assisted, self-lowering, or helicopter). Below is the most common mobile crane assisted dismantling method for a freestanding tower crane. Dismantling a tower crane is widely regarded as