This document is the TN 1.07_C Manhole Adapter Guide. Connection basics with descriptions, photographs and figures.

Manhole connection basics begins with Compression Connections. Gasket is cast into the wall of the manhole at the precaster’s facility. Gasket cannot be field installed. A-LOK® Premium is recommended for all connections. The Premium gasket has higher compression than the A-LOK standard gasket, which aids in sealing against the outer wall of SaniTite HP triple wall pipe and the SaniTite HP manhole adapter sleeve for

dual wall pipe. A-LOK gaskets always need to connect to a smooth surface of pipe - Nyloplast® adapter or ADS adapter sleeves are required when using dual wall pipe. Triple wall pipe requires no adapter.

Boot Connections have gasket that can be installed by the precaster or field-installed by the contractor. The precaster will form the required hole in the structure and either the precaster or the contractor will install the boot. Preferred manufacturers are Press Seal® (PSX Direct Drive) and Trelleborg (Kor-n-Seal®). Boots always need to connect to a smooth surface. You can connect to a dual wall pipe with an installed corrugated pipe adapter (valley fill gasket) or a manhole adapter sleeve.

Figures for Sleeve Manhole Adapter, Nyloplast PVC Manhole Adapter, Corrugated Pipe Adapter Gasket and SaniTite HP TW to Storm DW provided.