Concrete Wall Formwork Design
Concrete Wall Formwork Design
(OP)
When pouring a concrete wall(s) the worst case design pressure would be p = (w x h). If the wall is poured in lifts or at a slow rate then the concrete should be setting up and reduce that pressure, i.e. reduce the effective 'h'. The time required would vary by the particular mix, but are there any guidelines out there for this? ACI 347 notes 'for forms that can be filled rapidly before stiffening of the concrete takes place, h should be taken as the full height of the form'.
What would be a reasonable way to determine how long is required, or what pour rate, to not need the full 'h'?
(Assume that I can't provide ties to take the full w x h)
What would be a reasonable way to determine how long is required, or what pour rate, to not need the full 'h'?
(Assume that I can't provide ties to take the full w x h)






RE: Concrete Wall Formwork Design
RE: Concrete Wall Formwork Design
RE: Concrete Wall Formwork Design
I have seen some formwork design aids that provide pressure based on pour rate (feet per hour) but they seem to vary and I haven't seen much documentation on where they get their numbers.
RE: Concrete Wall Formwork Design
http://www.concrete.org/tempComDocs/107394-6023/ci...
Also see attached for some class notes on temporary works
http://courses.washington.edu/cm420/
RE: Concrete Wall Formwork Design
http://www.g-lumber.com/pdf/APA-Concrete-Formwork....
RE: Concrete Wall Formwork Design