This document is the TN 5.12 HP Storm Pipe Repair Options. External Mechanical, Internal Repairs explained. Diagrams included.

ADS HP Storm for storm drainage is made of polypropylene (PP) resin making the pipe lightweight and very easy to handle, The attributes that make the pipe easy to use can also make it easy to abuse, resulting in damaged pipe or joints.

This technical note discusses some of the products available that can be used to repair damaged PP pipe or joints in the field. Repair options considerations in selecting a repair method is the degree of joint performance required. Watertight repairs are generally used on pipe with watertight joints, and soil-tight repairs on pipe with soil-tight joints. This helps keep costs in line and prevents the repair from being the weak area of the pipe system. The way in which a pipe can be accessed is another primary consideration which influences what type of repair alternative is selected. Pipe that is not yet buried, or can be easily excavated, can be repaired from the exterior. If the pipe is buried and cannot be conveniently excavated, an internal repair may be the best alternative.

For external mechanical repairs Mar Mac Polyseal Pipe Coupler, Split Band Couplers, Concrete Collars, Slip Couplings and the Large Diameter Repair Coupler are explained. Diagrams show each repair option.

Internal mechanical repair products generally consist of a flexible cylindrical gasket sleeve, which is expanded to conform to the inner wall of the pipe. The NPC Internal Joint Seal, Link Pipe Grouting Sleeve and Internal chemical sealing details are clarified.