AASHTO M 274-87 (2021) PDF Download

The AASHTO M 274-87 (2021) standard provides guidelines for the manufacturing and use of steel sheet used in the fabrication of corrugated steel pipe (CSP). This type of pipe is commonly used in drainage systems and underdrains. The steel sheet used in the CSP is coated with commercially pure aluminum using the hot-dip process, with a single coating mass.

The purpose of this standard is to ensure that the steel sheet used in CSP meets specific quality and performance requirements. The material is supplied in flat coils and cut lengths, and is corrugated in cut lengths. By adhering to this standard, manufacturers and users can ensure that the steel sheet used in CSP is suitable for its intended application, providing durability, corrosion resistance, and proper functioning within the drainage system.