A contractor plans to pour a 12-foot-tall wall at a rate of 4 feet per hour, using Type I cement at 70°F. ACI 347R-14’s wall pressure formula yields a maximum lateral pressure of 600 psf. Without the guide, an engineer might incorrectly assume full hydrostatic pressure (~750 psf), overdesigning the forms and wasting money—or worse, underestimate and cause a blowout.
If you need help finding a legal copy or interpreting a specific section (e.g., lateral pressure formula for your pour rate), let me know. aci 347r14 guide to formwork for concrete pdf