Structural stability during alteration, demolition and dismantling

What you need to do

The law says that all alteration, demolition and dismantling work should be carefully planned and carried out by competent people to avoid unplanned structural collapse.

The law requires commercial clients to provide contractors with relevant information about a building's structure, including stability and structural form and any significant design assumptions, suggested work methods and sequences. The contractor must then use that information to plan and carry out the work safely.

Key requirements are:

What you need to know

Workers and passers-by can be injured by premature and uncontrolled collapse of structures, and by flying debris.

Survey and assessment

A competent person should do a thorough structural survey and assessment before any potentially load- bearing parts of a structure are altered.

The structural survey should consider:

This information should be used to determine the steps required to prevent any collapse.

Preventing structural collapse

A competent person should decide the method and design of temporary supports. Temporary support provided must be designed, installed and maintained to withstand foreseeable loads and structures should never be overloaded.

Arrangements for demolition

Demolition or dismantling arrangements should be written down before the work begins. This safe system of work may be in the form of a safety method statement identifying the sequence required to prevent accidental collapse of the structure.

In addition to the design and method of temporary supports a safe system of work may include:

Consulting building control departments

You should consult the building control department of the local authority in the area where a building is located before any structural alterations are made to a building.

The local authority is the enforcing body for building regulations.