Precast concrete drainage unit – Specification
Commenting Period
20 June 2022 – 30 July 2022
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This standard was developed with the objective to provide a comprehensive standard that specifies requirements for precast concrete drainage unit that can be used by manufacturers and users.

This standard specifies the requirements of precast concrete (reinforced or unreinforced) drainage unit intended to be used for water irrigation, flood mitigation and conveyance of storm water, cable trench and not subject to axle traffic loadings. This standard does not cover box culvert and piping system.