TOLERANCES FOR TUNNEL LININGS, CONDUITS, AND FILLING
AND EMPTYING CULVERTS
less than 13 mm
..................... -2.5 percent thickness but not
less than 6 mm
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NOTE: The following table to be used with IP units.
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TOLERANCES FOR FOUNDATIONS
(1)
Lateral alignment
As cast to the center of gravity as specified;
0.02 times width of footing in direction
of misplacement but not more than .......................... 2 in.
Supporting masonry construction .......................... 1/2 in.
(2)
Level alignment
Top of footings supporting masonry ....................... 1/2 in.
Top of other footings ................................... +1/2 in.
..................................... -2 in.
(3)
Cross-sectional dimensions
Horizontal dimensions of formed members ................... +2 in.
................. -1/2 in.
Horizontal dimensions of unformed members cast against soil
2 ft or less ......................................... +3 in.
....................................... -1/2 in.
Greater than 2 ft but
less than 6 ft ....................................... +6 in.
..................................... -1/2 in.
Over 6 ft ........................................... +12 in.
.......................................... -1/2 in.
Vertical dimension (thickness) ........................ -5 percent
(4)
Relative alignment
Slope of footing side and top surfaces
with respect to the specified plan ................... 1 in./10 ft
SECTION 03700
Page 25
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