Illinois Department of Transportation (IDOT) · Standard Specifications for Road and Bridge Construction
Section 1044 — FLAP GATE
Illinois Standard Specifications for Road and Bridge Construction, Section 1044. Full text, cross-references and related pay items on BuildSpec.
Art. 1043.05 Flap Gate 932 High density expanded polystyrene adjustment rings with polyurea coating shall have no void areas, cracks, or tears. The actual diameter or length shall not vary more than 0.125 in. (3 mm) from the specified diameter or length. Variations in height are limited to ± 0.063 in. (± 1.6 mm). Variations shall not exceed 0.25 in. (6 mm) from flat (dish, bow, or convoluting edge) or 0.125 in. (3 mm) for bulges or dips in the surface. 1043.05 Expanded Polypropylene (EPP) Adjusting Rings. The EPP adjusting rings shall be manufactured using a high compression molding process…
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