TWK/General/TBT-TWK-018
Temporary Works Awareness and Principles
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Temporary Works Awareness and Principles
Temporary works are engineering structures used to support the permanent works during construction. They include formwork, falsework, propping, shoring, cofferdams, and temporary earthwork support. Failure of temporary works can cause catastrophic collapse, serious injury, and death. Every temporary works item must be designed, checked, installed, and removed under a formal managed process controlled by a temporary works coordinator.
Key Hazards
Structural collapse from inadequately designed or installed temporary works
Overloading temporary supports beyond their designed safe capacity
Premature removal of temporary works before permanent structure can self-support
Unauthorised alteration of temporary works compromising structural integrity
Control Measures
- Ensure all temporary works are designed by a competent engineer and independently checked.
- Appoint a temporary works coordinator to manage the process from design to removal.
- Maintain a temporary works register listing every item with its status and inspection dates.
- Install temporary works strictly in accordance with the approved design drawings and sequence.
- Inspect temporary works before loading, regularly during use, and after any adverse event.
- Never alter, remove, or adjust any temporary works element without formal engineering approval.
- Brief all operatives on the temporary works present in their area and the loading restrictions.
- Ensure a formal handover takes place between the installer and the user of temporary works.
- Obtain written permission from the designer before removing any temporary works from service.
Remember
- Temporary works failures have caused some of the worst construction collapses in UK history.
- Every temporary works item must be designed, checked, and formally managed through BS 5975.
- Never alter or remove any temporary works without written approval from the designer.
- The temporary works coordinator is responsible for managing the entire process on site.
- Overloading formwork, falsework, or propping is extremely dangerous and can cause sudden collapse.
- Inspect temporary works regularly and report any movement, damage, or deformation immediately.
Applicable Legislation: CDM Regulations 2015 · Health and Safety at Work etc. Act 1974 · BS 5975 (Code of Practice for Temporary Works) · BS EN 12812 (Falsework)
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