This document is the 604 HDPE to RCP Connection (MarMac) Detail. Cross sections with descriptions and dimensions provided.

The first cross section shows finish grade, double wide MARMAC coupler to be wrapped around connection, existing RCP pipe, class I bedding to support connection.

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

The third section A-A shows a double wide MARMAC coupler to be 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 and internal cylinder adapter is not recommended for downstream connections.