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A sample of 15 year old 257 mm (nominal 10 inch) diameter Polyvinyl Chloride (PVC) sewer pipe was excavated and tested in accordance with the ASTM standards to which it was manufactured. Test results for standard requirements such as workmanship, dimensions, flattening, impact resistance, pipe stiffness, joint tightness and extrusion quality are presented and compared to current requirements of ASTM D 3034, “Standard Specification for Type PSM Poly(Vinyl Chloride) (PVC) Sewer Pipe and Fittings.” This information serves as a basis for review of the physical durability of PVC sewer pipe.
A substantial amount of initial installation data was available for this particular sewer project. Information such as bedding and haunching requirements and initial deflections were retrievable as well as original plans. Several pre-excavation procedures were completed in an effort to assess current performance. These included a review of City maintenance records, measuring depth of flow, televising the line and pulling a deflection mandrel. Actual in-situ soil classifications and density measurements were completed as the excavation proceeded. This information serves as a basis for a review of the performance of the PVC sewer line.
modulus of elasticity, deflection, pipe stiffness, joint tightness, tensile strength
Bauer, Dennis E.
Association Engineer, Uni-Bell PVC Pipe Association, Dallas, TX