TOLERANCES FOR CAST-IN-PLACE REINFORCED CONCRETE
FOR BUILDINGS
but not over
3 ft dimension ..................................... +1/2 in.
..................................... -3/8 in.
Over 3 ft dimension .................................. +1 in.
................................ -3/4 in.
(5)
Relative alignment
Stairs
Different in height between
adjacent risers ..................................... 1/8 in.
Different in width between
adjacent treads ..................................... 1/4 in.
Grooves
Specified width 2 in. or less ....................... 1/8 in.
Specified width more than 2 in.
but not more than 12 in. ............................ 1/4 in.
Sawcuts, joints, and weakened plane on slab
Lateral, gradual ........................ 3/4 inch in 10 feet
Lateral, abrupt ....................................... 0 in.
(6)
Openings through members
Cross-sectional size of opening ........................... +1 in.
......................... -1/4 in.
Location of centerline of opening ........................ 1/2 in.
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 ..................................... 1/4 in. in 10 ft
All other conditions ........................ 3/8 in. in 10 ft
(2)
Abrupt variation
The offset between concrete surfaces under adjacent pieces of
formwork for the following classes of surface: (For Class A-HV,
positive means raise of elevation in the direction of waterflow,
negative means drop of elevation in the direction of waterflow)
SECTION 03700
Page 27
Previous Page
