TOLERANCES FOR CAST-IN-PLACE REINFORCED CONCRETE
FOR BUILDINGS
and other lines exposed to view ............................ 13 mm
(4)
Cross-sectional dimensions
Members, such as columns, beams, piers, walls
(thickness only) and slabs (thickness only)
300 mm dimension or less ............................. +10 mm
.............................. -6 mm
More than 300 mm but not over
900 mm dimension ..................................... +13 mm
..................................... -10 mm
Over 900 mm dimension ................................ +25 mm
................................ -19 mm
(5)
Relative alignment
Stairs
Different in height between
adjacent risers ........................................ 3 mm
Different in width between
adjacent treads ........................................ 6 mm
Grooves
Specified width 50 mm or less .......................... 3 mm
Specified width more than 50 mm
but not more than 300 mm ............................... 6 mm
Sawcuts, joints, and weakened plane on slab
Lateral, gradual ........................... 19 mm in 3000 mm
Lateral, abrupt ........................................ 0 mm
(6)
Openings through members
Cross-sectional size of opening ........................... +25 mm
............................ -6 mm
Location of centerline of opening .......................... 13 mm
TOLERANCE FOR FINISHED FORMED CONCRETE SURFACES
(1) Vertical alignment
Formed surfaces slope with respect to the specified plane
Vertical alignment of outside corner of exposed corner
columns and control joint grooves in concrete exposed
to view ...................................... 7 mm in 3000 mm
SECTION 03700
Page 20
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