ACI Top of Floor Slab Tolerance
ACI Top of Floor Slab Tolerance
(OP)
My 6 story building has top of floor slab elevations off as much as 3". Generally, the survey indicates most areas are within 1/2" but there are several locations on several floors where the top of slab elevation is up to 3" too high or low. The spec references ACI & AISC for the appropriate tolerances. Anyone know what the max is? Maybe in ACI 117?






RE: ACI Top of Floor Slab Tolerance
Manual de la Construcción con Hormigón, 3ª Ed.
Waddell, Dobrowolski
Mc Graw Hill
See attachment
RE: ACI Top of Floor Slab Tolerance
Do the high points align up and down the building?
This could be tricky at the perimeter if you have floor to floor glass, or if you have brick relief attached to the slab.
RE: ACI Top of Floor Slab Tolerance
Max Vertical deviation of any elements +/- 1 in (Section 4.2.2) except at edges of openings that +/- 1/2 in
Thickness of suspended slabs tolerance is -1/4 in (Section 4.5.3)
Max irregularity over the distance of 10 ft +/- 0.3% (Section 4.8.2)
RE: ACI Top of Floor Slab Tolerance
RE: ACI Top of Floor Slab Tolerance
I think a realistically 3/4" is a good number. 3" is so far out of a reasonable tolerance
RE: ACI Top of Floor Slab Tolerance
you probably want to look at AISC tolerances.
RE: ACI Top of Floor Slab Tolerance