How do you know if the bridge is secant?

Design drawings, consult professional and technical personnel, and refer to standards and specifications.

1. Design drawings: For design drawings with bridges, the cutting line can be determined according to the marks on the drawings.

2. Consult professional technicians: If you are not sure how to determine the cutting line of the bridge, you can consult professional structural engineers, who can give accurate guidance according to the specific situation.

3. Reference standards and specifications: According to the local building standards and bridge specifications, there are regulations on the cutting line of the bridge. You can refer to these standards to determine the cutting line.