20230418 09121800 1.0 TRUE Vault A concrete box and/or detention pipe (example of detention pipe 03-0600). A swVault detention pipe is a stormwater pipe or pipe arch used as a detention vault. In most cases, storm system vaults serve different purpose than vaults in water and/or wastewater system. Storm water vaults are used for water quality and/or flow control. Subsurface infiltration trench can be either swPipe or swVault.