Wall Form Pressure Calculator
Lateral concrete pressure from pour rate and temperature per ACI 347R.
Inputs
Results
Lateral pressure (psf)
792.9
Lateral pressure (psi)5.51
Equivalent fluid head (ft)5.29
Full hydrostatic (psf)1,500
Design pressure (psf)1,030.7
How to Use This Calculator
- Enter the Pour Rate in feet/hour and Concrete Temperature at placement.
- Enter Form Height, Concrete Unit Weight, and the Chemistry Coefficient (Cc) for your cement type.
- Review Lateral Pressure in psf and psi — this value drives all subsequent formwork design.
- Check Equivalent Fluid Head to understand what fraction of full hydrostatic pressure governs.
- Use Design Pressure (with 1.3 safety factor) to size form ties, walers, and strongbacks.
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