This document is the 603 HDPE to RCP Connection (Geotextile Wrap) Detail. Cross sections with descriptions and dimensions provided.

The first cross section shows cast in place concrete encasement, finish grade, non-woven geotextile wrapped around connection, existing RCP pipe, class I bedding to support concrete collar.

The second cross section shows internal coupler spigot adapter, HDPE pipe to be connected, non-woven geotextile wrapped around connection, existing RCP pipe, existing grade and excavate existing grade to avoid soil intrusion and create safe work area.

The third section A-A shows cast in place concrete encasement and geotextile wrapped around connection.

Notes state that connection and pipe to be backfilled per ASTM D2321, if no internal cylinder, an HDPE watertight repair coupler can be used to connect HDPE pipe to CMP and internal cylinder adapter is not recommended for downstream connections.