AWWA CIPP classifications

The American Water Works Assn. (AWWA, Denver, Colo.) divides cured-in-place pipe (CIPP) into four classes.

Sidebar From: 11/30/2012 CompositesWorld,

Editor's Commentary

This short article is a sidebar to a feature article, titled "Cured-in-place pipe: Trenchless trends." To read the feature article, click on its title under "Editor's Picks," at top right.

The American Water Works Assn. (AWWA, Denver, Colo.) divides cured-in-place pipe (CIPP) into four classes based on three primary distinctions in terms of structural function:

Class I: Nonstructural liners; act only as corrosion barriers.

Class II and Class III: Semistructural liners; designed to cover small holes or gaps in the host pipe.

Class IV: Fully structural liners; will carry the full internal pressure without support from the host pipe.
 

LEARN MORE

Editor's Picks

Cured-in-place pipe: Trenchless trends

A variety of CIPP products are enabling the rehabilitation, rather than excavation and replacement, ...

MMS ONLINE
Channel Partners
  • Techspex