Foundation Wall Tolerances
Foundation Wall Tolerances
(OP)
Just to make sure I'm reading ACI-117 correctly. I have a foundation wall below grade that is sitting on a footing. Since the Foundation section of ACI-117 only seems to address footings, can I move to the building section and use "4.1—Deviation from plumb
4.1.1 For heights less than or equal to 83 ft 4 in. (25.4 m) For lines, surfaces, corners, arises, and elements: the lesser of 0.3% times the height above the top of founda- tions as shown on structural drawings or ±1 in. (25 mm)." as the tolerance for the foundation wall? It specifically references from the top of foundations. Since I am building a "foundation" element what should the tolerance be? Do I simply say the footing is the top of foundation? Any advise would be great. Thanks
4.1.1 For heights less than or equal to 83 ft 4 in. (25.4 m) For lines, surfaces, corners, arises, and elements: the lesser of 0.3% times the height above the top of founda- tions as shown on structural drawings or ±1 in. (25 mm)." as the tolerance for the foundation wall? It specifically references from the top of foundations. Since I am building a "foundation" element what should the tolerance be? Do I simply say the footing is the top of foundation? Any advise would be great. Thanks





RE: Foundation Wall Tolerances
RE: Foundation Wall Tolerances
RE: Foundation Wall Tolerances
a. Use Section 3.1.3, and calculate allowable tolerance, taking L as total wall height below grade, in this case.
b. Also, use Section 4 and calculate tolerance again, using story height as L this time.
c. Adopt more stringent requirement of the two tolerances calculated above.
It will however depend upon whether 'foundation wall' can in fact be considered as a foundation or not? Moreover, whether it is of sufficient bearing area to transfer the superstructure loads to underneath soil or otherwise?