Pre-demolition survey

What is a Pre-Demolition Survey ?

When a building is to be demolished the (non-domestic) client ( usually the property owner) has a duty to provide pre-demolition information to the designer and contractor. This will involve a pre-demolition investigation and survey. Before any work commences, a full site investigation must be made by a competent person to determine the hazards and associated risks which may affect the demolition team an members of the community who may pass close to the demolition site. The competent person is often a specialist structural engineer who will also advise on the temporary support to adjacent buildings and the correct method of dismantling or demolition. 

Pre-commencement surveys

There are several pre-commencement surveys that may be necessary to ensure the health and safety of all personnel on site. These include:

  • A services survey to locate any existing services on site;
  • An asbestos survey to identify asbestos-containing materials on site;
  • A soil survey to identify contaminated ground; and a ground survey to determine the load-carrying capacity of the ground

The investigation should cover the following topics:

  • The construction details of the structures or buildings to be demolished ( including the materials used, fragile roofs, rot and extent of any dilapidation, significance and extent of any dilapidation of the structure, the presence of cantilevered structures and any general weaknesses) and those of neighbouring structures or buildings;
  • The identification of key structures elements including pre-and post-tensioned components 
  • A review of drawings, structure calculations, health and safety file, etc. related to the structure.
  • The previous use of the premises 
  • The load-carrying capacity of adjoining land including the presence of underground culverts;
  • The need for possible temporary support structures for the building being demolished and adjoining buildings;
  • The location of any dangerous machinery;
  • The presence of asbestos, lead or other hazardous or radioactive substances and any associated health risks;
  • Environmental issues, such as dust, water pollution and noise;
  • Public safety including the provision of high fencing or hoarding;
  • Manual handling issues;
  • The location of any underground or overhead services ( water, electricity, gas and sewage)
  • The location of any underground cellars, storage tanks, chimneys, balconies or bunkers particularly if flammable or explosive substances where previously stored;
  • The means of access to the site;
  • The removal of waste;
  • The details of any traffic or pedestrian routes through the site;
  • The provision of welfare facilities;
  • The proximity of neighbours;
  • The location of any public thoroughfares adjacent to the structure or building;
  •  The age of the structure;
  • Its previous use;
  • The type of construction;
  • Nearby buildings or structures; and the weight of removed materials or machinery on floors above ground level

Details of the structure of the building

The details of the structure of the building to be demolished would include whether it was built of brick. pre-stressed concrete, reinforced concrete or steel. There may be certain building regulations which cover the site and Local Authority Building Department should be contacted to establish whether any part of the site is affected by these regulations. All structural alterations carried out on the structure in the past should be reviewed.

All demolition work requires those in control of the work to produce a written plan showing how the danger will be prevented. This will be the responsibility of the CDM coordinator on notifiable projects and the contractor or designer on non-notifiable demolition projects. The written Health and Safety plan will include a risk assessment of the state and design of the structure to be demolished and the influence of that design on the demolition method proposed. This risk assessment will normally be made by the project designer who will also plan the demolition works. A further risk assessment should then be made by the demolition contractor undertaking the demolition works and a written method statement will be required before demolition of the building takes place.

The demolition project manager should arrange for suitable plant and equipment to be provided so that the work can be executed to the standards required by health and safety legislation, in particular the Control  of Asbestos Regulations  It may be necessary for the local authority and the police to be consulted about the proposed demolition work so that issues of public protection, local traffic management and possible road closures can be addressed. There should be liaison with the occupiers of addressed. There should be liaison with the occupiers of adjacent properties because, in some cases, they may need to evacuate.   

Manchester demolition remote demolition

REMOTE DEMOLITION

Restricted access is also often a problem and as can be seen from the photograph, the Brokk 180 was just the tool to demolish this particular bridge that had been “covered” by the new replacement 

Manchester bridge demolition

BRIDGE DEMOLITION

This type of work means that you need elite professionals because the lives of people and the area’s economy depend on quality and safe infrastructure. Since inception, Manchester Demolition now 

Manchester asbestos removal

ASBESTOS MANAGEMENT

There are a lot of considerations to make when carrying out demolition or DIY projects on residential and commercial projects. One of the questions you’ll need to consider is how do you go

Manchester demolition contractor facade retention

FACADE RETENTION

As a modern and professional demolition contractors, we have developed our capabilities to provide Facade Retention and Temporary Propping services within any Demolition Contract 

Manchester demolition contractors gasholder demolition

GASHOLDER DEMOLITION

Some of our employees remember demolishing our first gasholder in the late 1990s. Since that date, our staff have demolished over 25 throughout England and Wales, giving the

House Demolition Company

HOUSE DEMOLITION

Why let your house demolition efforts feel stressful. We have over 50 years experience in house demolition in Manchester,  we are able to deliver a variety of demolition.

Chemical waste removal Manchester

CHEMICAL WASTE REMOVAL

Our hazardous waste removal and disposal service covers substances such as paint and oils, and items which incorporate toxic chemicals or liquids such as lead acid batteries, aerosols and 

Manchester demolition Crushing and screening

CRUSHING & SCREENING

Manchester Demolition provide a complete range of hard and soft rock crushing solutions. With a large modern fleet of heavy machinery alongside crushers and screeners and highly 

Manchester-demolition-dismantling-contractors_menu

DISMANTLING CONTRACTORS

A combination of dismantling and demolition is often beneficial as it permits the recovery of assets, enabling these to be recycled, re-used or sold to offset the client’s costs. The scope of dismantling 

Manchester demolition company

EMERGENCY DEMOLITION

Unfortunately, not all demolition work has a pre-plan behind it. You may have a building that perfectly happy with , but due to unforeseen circumstances can create an emergency that requires a  

Railway demolition

RAILWAY DEMOLITION

Our railway experience started in 1993, when some of the more experienced in our team demolished our first road over Rail Bridge on the Liverpool St Station to Norwich line as part of the original

High-Rise demolition in Manchester

HIGH-RISE DEMOLITION

Our team has been involved with the demolition of many High-Rise Structures throughout the United Kingdom. The range of structures has also been extensive, such as:

Submit a general enquiry or email your project details directly to us

Email your project details

You can now email your project details directly to us for pricing, by clicking on the link below. Please ensure your provide as much details as possible, including photographs.

0161 222 4148

Scroll to Top