Installation Anomalies? You be the Judge
The HDPE pipe industry has fallen short in its effort to promote quality installation procedures. The details provided in ASTM D 2321, “Underground Installation of Thermoplastic Pipe for Sewers and Other Gravity-Flow Applications,” are not widely known by the engineering and contracting communities. Of greater concern, the procedures outlined in D 2321 are not being implemented during the construction process. Excessive deflection can be a result of improper installation and/or product quality and pipe profile geometry. It can lead to bad joints, grade problems, poor hydraulic performance, stress related problems, and surface (ground or pavement) irregularities. More importantly, though, is the fact that most of these problems are an indicator of future failure.
