This document is the 404 Installation HDPE Riser Tee 12-24in Detail. It shows 2 details for the unit with dimensions and descriptions.

The first detail shows frame & cover, structural backfill per ASTM D2321, Class I compacted or Class II compacted to 95%, concrete collar, HDPE pipe diameter, bedding, undisturbed native soil, riser TEE and standard pipe.

The 2nd detail shows the HDPE pipe diameter, Class I compacted or Class II compacted to 95%, concrete collar and minimum trench width.

A chart for recommended minimum trench widths for pipe diameters is included.

Notes recommend concrete collar shall be designed by others and for projects where cover exceeds the minimum or maximum values, contact ADS.