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Temporay Works Coordination

BS. 5975 | 2019
The Management of Temporary Works Coordinator Services

The Management of Temporary Works Using the Principal Designer

CDM Principal Designers should take reasonable steps to ensure co-operation between permanent and temporary works designers, in particular to ensure that arrangements are in place to ensure that designs are compatible and that the permanent works can support any loadings from temporary works. CDM Principal Designers also have a duty to advise clients on the suitability of the initial construction phase plan. Considerations when drawing up the construction phase plan, as listed in the ACOP, are the arrangements for controlling significant site risks including, the stability of structures whilst carrying out construction work, including temporary structures and existing unstable structures and work on excavations and work where there are poor ground conditions.

Temporary works is defined in BS5975: 2019 "Code of practice for temporary works procedures and the permissible stress design of falsework" as "(those) parts of the works that allow or enable construction of, protect, support or provide access to, the permanent works and which might or might not remain in place at the completion of the works".

Design principles

In order to ensure the strength and stability of any temporary works structure, there are 3 fundamental aspects that need to be considered which can be simplified as follows:

  • Foundations – the ability of the ground to carry the loads transmitted from the temporary works structure without failure or excessive deformation or settlement.

  • Structural integrity – the ability of the temporary works structure itself to carry and transmit loads to the ground via the foundations without failure of the structural elements, including fixings and connections (eg by buckling, bending, shear, tension, torsion), and without excessive deflection.

  • Stability – the ability of the temporary works structure to withstand horizontal or lateral loading without sway, overturning or sliding failure (stability may be inherent in the temporary works structure itself or provided by the permanent works).

Consequences of temporary works failure

Failure to adequately design, construct and maintain temporary works can lead to:

  • Collapse or failure of the temporary works

  • Structural failures and collapse of the permanent works

  • Uncontrolled ingress or egress of materials, spoil and water

  • Collapse of adjacent structures (buildings, transport systems, infrastructure)

  • Risk of single/multiple fatalities and serious injuries to workers and members of the public

  • Risk of significant delay and increased costs to construction projects

  • Significant financial and commercial risks to contractors, sub-contractors, designers, suppliers, and contractors


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CDM North can deliver your temporary works required for managing the site enabling works, management and co-ordination of minor works , revisions to main building, design checking of all temporary structures.


External checkers are employed as required to the category of the temporary works design.

CDM North can help all clients commercial, local authority, principal contractors, contractors help discharge the duties required to complete you construction project. Click here to contact us.

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