Formwork for Concrete Structures by R.L.Peurifoy and G.D- By EasyEngineering.net

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Dimensional Tolerances for Concrete Structures 469
Tolerances of Canal Lining
1. Lateral alignment:
(a) Alignment of tangents .................................................... 2 in.
(b) Alignment of curves ........................................................ 4 in.
(c) Width of section at any height: 0.0025 times
specified width W plus 1 in. ........................ 0.0025W + 1 in.
2. Level alignment:
(a) Profile grade ..................................................................... 1 in.
(b) Surface of invert .............................................................. ¼ in.
(c) Surface of side slope ....................................................... ½ in.
(c) Height of lining: 0.005 times established
height H plus 1 in. ...........................................0.005H + 1 in.
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