Book V: Prevention of risks associated with certain activities or operations

Where, in a construction, elements of a certain elasticity are subject to stress and whipping may result from their rupture or sudden release, or where their removal may have serious consequences for the stability of all or part of the construction, they may only be removed in a safe manner and, in the case of workers, in accordance with the employer’s instructions.

When the demolition of a section of wall or any other building element is carried out by pulling with metal cables, ropes or any other similar device, the area in which the section of wall or building element will collapse must be carefully delimited.

When the demolition of a section of wall or any other construction element is carried out by means of thrust or impact, appropriate measures are taken to prevent the wall or construction element collapsing on the side where the workers are located.

When, following the demolition of certain parts of a structure, the equilibrium of the remaining parts or neighbouring constructions appears to be compromised, measures, such as the installation of props, are taken to prevent any risk of collapse.

The undermining of a structure by means of a mechanically driven machine is only authorised if it does not result in any danger.

A work floor is installed for demolition work carried out at a height of more than six metres above the ground. The floor located at the edge of the void is enclosed by guard rails and plinths established in accordance with the provisions of article R. 4534-78.

When demolition work is carried out at a height not exceeding 6 metres above ground level, the installation of a work floor is not compulsory, subject to the following provisions: 1° The work may only be entrusted to qualified workers; 2° It is forbidden to allow workers to climb walls to be demolished that are less than 35 centimetres thick.

Protective helmets must be worn for demolition work.