3.12

Formwork

Workability

Designer

Designer
  • Specify any particular requirements (e.g. re finish)

Builder

  • Select suitable formwork system, depending on :
    • Construction method
    • Slipform construction ?
    • Finish required
    • Repeat uses
    • Loading factors (construction, concrete pressures, etc.)
    • Use of formwork liners
  • Design of falsework support system
  • Temporary works design certificate
  • Temporary works inspection and sign off prior to pour
  • Surface treatment of formwork
  • Release agents – do they affect the final finish e.g. paint
  • Striking of formwork – back-propping requirements

Producer

  • Specialist / complex formwork design – impact on mix design ?
  • Suite of mixes required if slipforming

Further Guidance

Main Standards – Reference

I.S. EN 13670

Clause 5 & Annex C

Other Guidance Documents

Concrete on Site series (Booklet 3) ; Concrete Society