It is common practice to pressure test installed pipelines to ensure that the pipe materials and installation are satisfactory.In fact, it makes sense that every installed pipeline be pressure tested to ensure a leak-free system.1.1 These test methods cover the procedures for determining the uncured (wet) and conditioned (dry) densities of resin, silicate, silica, and sulfur-based chemical-resistant mortars, grouts, monolithic surfacings, and polymer concretes.1.2 Mold Method A outlines the molding procedure generally used for systems containing aggregate less than 0.2 in. Mold Method B covers the molding procedure generally used for systems containing aggregate from 0.2 to 0.4 in. Mold Method C is for systems containing aggregate larger than 0.4 in.
The tool, called “PACE,” has a fatal flaw, however.
Some of the confusion arises because of the use of both "Dimension Ratio" (DR) and "Standard Dimension Ratio" (SDR) in product standards.
Video inspections of PVC sewer pipelines often reveal small longitudinal gaps between the spigot end and the bell shoulder of the gasketed joints. In fact, gaps are an important design consideration for both pressure and non-pressure PVC pipes.
By restricting the design inputs to unrealistic values, PPI skews the outputs to unfavorably portray PVC.
Dimension ratio is an important but often misunderstood concept for PVC pipe.
The information provides details about the pipe material, manufacture, and testing, as well as the appropriate logo of any certification agency.