Monday, March 17, 2014

Demolition - Buildings

Demolition ~ skilled and potentially dangerous work that should only be undertaken by experienced contractors.

Types of demolition ~ partial or complete removal. Partial is less dynamic than complete removal, requiring temporary support to the remaining structure. This may involve window strutting, floor props and shoring. The execution of work is likely to be limited to manual handling with minimal use of powered equipment.

Preliminaries ~ a detailed survey should include:

• an assessment of condition of the structure and the impact of removing parts on the remainder.
• the effect demolition will have on adjacent properties.
• photographic records, particularly of any noticeable defects on adjacent buildings.
• neighbourhood impact, i.e. disruption, disturbance, protection.
• the need for hoardings, see pages 89 to 93.
• potential for salvaging/recycling/re-use of materials.
• extent of basements and tunnels.
• services † need to terminate and protect for future reconnections.
• means for selective removal of hazardous materials.

Insurance ~ general builders are unlikely to find demolition cover in their standard policies. All risks indemnity should be considered to cover claims from site personnel and others accessing the site.

Additional third party cover will be required for claims for loss or damage to other property, occupied areas, business, utilities, private and public roads.

Salvage ~ salvaged materials and components can be valuable, bricks, tiles, slates, steel sections and timber are all marketable. Architectural features such as fireplaces and stairs will command a good price. Reclamation costs will be balanced against the financial gain.

Asbestos ~ this banned material has been used in a variety of applications including pipe insulation, fire protection, sheet claddings, linings and roofing. Samples should be taken for laboratory analysis and if necessary, specialist contractors engaged to remove material before demolition commences.

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