1. The allowable deviation of box culvert construction shall comply with the regulations.
2. The pipe body is straight, the inlet and outlet, the hole body and the groove are connected smoothly, and there is no water barrier.
3. The hat stone, I-shaped wall or I-shaped wall is straight, matching the slope and line shape of the route and angular.
4. The road surface at the culvert is smooth, and there is no vehicle bump.
5. The exposed concrete surface is smooth and the color is consistent.
6. The concrete surface of the box culvert is smooth, the ridge line is straight, and there is no serious edge gnawing and corner falling.
7. The area of honeycomb pits shall not exceed 0.5% of the surface area. If the depth exceeds 10 mm, it must be treated and repaired before use.
8. Non-stressed cracks appear on the concrete surface of the box culvert, and the width of the cracks exceeds 0. 15mm when there are regulations or no regulations in the design.
9. Settlement joint sealing is dense and straight.
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