How to Evaluate Circular Pipe Culverts of Class III Highway

Circular tube culvert belongs to the culvert and passage sub-project in subgrade unit engineering. According to Article 9 of the Standard for Quality Inspection and Evaluation of Highway Engineering (JTGF80/ 1-2004), each culvert is a sub-project, which includes the whole culvert, culvert fabrication (if the finished product is purchased, it will be made by a qualified manufacturer without evaluation), pipe joint and culvert installation. Namely:

Unit project: subgrade project (1-3km section)

Sub-project: Culverts and Passages (1-3km section)

Sub-project 1:No. 1 circular pipe culvert of this section.

Item: 1, culvert as a whole

2. Culvert fabrication

3, pipe socket and culvert installation

4. One-character wall and eight-character wall

5. Tapered slope

Sub-project 2: The second round pipe culvert of this section.

Item: 1, culvert as a whole

2. Culvert fabrication

3, pipe socket and culvert installation

4. One-character wall and eight-character wall

5. Tapered slope

. . . . .