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- Type 1 - Aluminium support legs with aluminium frames assembled into falsework systems, such as; Ischebeck Titan, SGB GASS or PERI MultiProp.
- Type 2 - Individual aluminium or steel props, including either timber header beams or proprietary panels, such as ; PERI Multiflex or Doka Eurex Systems.
- Type 3 - Heavier steel falsework, such as; RMD Kwikform System Shoring or A-Plant Acrow Props.
The design philosophy behind falsework differs from that of permanent works. They are highly stressed, usually to 90% of their capacity over short periods of time and involve reusable components. Props are rarely tied down and rely on their self-weight and supported load for lateral stability.
The design of the falsework must make allowances for erection tolerances and take into account that the components are re-used many times.
Falsework capacities are provided by the manufactures and permanent, imposed and environmental loads must all be taken account of in their design.
As with general construction, stability is often identified as the main cause of collapse. BS 5975 (BSI, 2011; clause 22.214.171.124) recommends that all falsework is designed for 2.5% of the vertical load acting horizontally as a tolerance for workmanship during erection.
 Related articles on Designing Buildings Wiki
- Bridge construction.
- Crane supports.
- Deleterious materials.
- Design liability.
- Facade retention.
- Health and Safety.
- Slip form.
- Temporary works.
- Trench support.
 External references
- BS5975:2008 + A1: 2001 Code of Practice for Temporary Works Procedures and the Permissible Stress Design of Falsework (BSI 2011).
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