Subhead 15.0: Dismantling and Demolishing

Subhead 15.0: Dismantling and Demolishing

This section covers the specifications for dismantling and demolishing structures, ensuring safety, precision, and proper disposal of materials. Below is a detailed breakdown of the content typically covered under this subhead:

15.1 General Precautions

• Safety Measures: Ensure safety of workers and prevent damage to adjoining structures.
• Regulatory Compliance: Follow local regulations and guidelines for demolition.
• Preparation: Disconnect utilities like water, electricity, and gas before starting demolition.

15.2 Dismantling Procedures

• Sequence: Dismantling should be carried out in a planned sequence, starting from the top of the structure.
• Manual and Mechanical Methods: Use appropriate methods depending on the structure and location.
• Controlled Demolition: In case of large structures, controlled demolition techniques like blasting may be used.

15.3 Demolition of Different Structures

• Roof Trusses: Careful dismantling of roof trusses ensuring safety.
• Heavy Floor Beams: Removal of heavy floor beams with proper support and handling.
• In-Situ Reinforced Concrete: Demolishing reinforced concrete structures with appropriate tools and safety measures.

15.4 Handling and Disposal of Debris

• Segregation: Separate reusable materials from debris.
• Transportation: Transport debris to designated disposal sites.
• Environmental Considerations: Ensure debris disposal minimizes environmental impact.

Examples:

1. Dismantling a Brick Wall:

   • Preparation: Disconnect utilities, set up scaffolding.
   • Process: Start dismantling from the top, removing bricks row by row.
   • Debris Handling: Collect bricks for reuse or disposal, clear the site.

2. Demolishing a Concrete Slab:

   • Preparation: Disconnect utilities, ensure surrounding structures are supported.
   • Process: Use jackhammers or hydraulic breakers to break the slab into manageable pieces.
   • Debris Handling: Segregate steel reinforcements for recycling, dispose of concrete debris.

3. Controlled Demolition of a Building:

   • Preparation: Detailed planning, evacuation of nearby areas, setup of protective barriers.
   • Process: Use controlled explosives placed at strategic points to collapse the building safely.
   • Debris Handling: Clear debris systematically, ensuring safety and minimizing dust.

Fri Aug 2, 2024