The problem with tower cranes in the UK


Most tower cranes in the UK were produced in continental Europe, usually designed to individual national standards.

The Health and Safety Executive, and the Construction Plant-hire Association, advise that out-of-service wind loads should be applied to all tower cranes regardless of age, and whether or not the wind loadings comply with FEM 1.001 or DIN 15018. The load cases specified in FEM 1.005 should also be applied.

Benefits of site-specific wind calculations


1. Save costs to the crane operator as it can reduce the wind load which may also decrease the foundation size

2. Improve understanding of the effects of increased wind speeds from all nearby tall buildings

BS EN 1991-1-4 with BRE


BRE’s 100-year reputation in construction research and innovation includes distinctive work with tower cranes. We provide a service in accordance with BS EN 1991-1-4 and the UK National Annex to BS EN 1991-1-4.

BRE’s calculations are based on:


  • Site location
  • Wind speed
  • Wind performance
  • Height of the structure
  • Terrain
  • Recurrence interval

FEM 1.005 specifies that calculation of out-of-service wind loads should be carried out using the roughness factors for flat open country. A site-specific wind assessment is required to use the terrain type where the crane will be erected. This must be undertaken by a wind engineering expert.

What next?


1. Let us know your requirements or any questions by filling the form below
2. Decide if this service will add value to your project
3. Sign an agreement
4. Receive a report and advice in a few working days