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PVC Catch Basin (DS-1)

This plan shows a WSDOT approved PVC alternative to Type 1, Type 1L and Type 2 concrete catch basins.  The maximum depth from finished grade to the lowest pipe invert is 8 feet.

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PVC structures allow inlet and outlet pipe diameter to match the diameter of the structure with most angles.  Riser sections can be trimmed down to 3" of extension without interfering with the ductile iron frame and grate.


View Plan Sheet (pdf 313 kb) 

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(WinZip file contains the following file formats: .dgn, .dwg files) 

View Special Provision (pdf 28 kb)


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