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A platform for research: civil engineering, architecture and urbanism
Sewer Pipe-Joint Infiltration Test Protocol Developed by CIGMAT
While a number of small to large older cities are undertaking repairs and maintenance, several other newer cities are planning for installing wastewater systems. Infiltration due to leaking pipes, manholes, laterals and other components of a wastewater system will add to the problem of overflow and over load the treatment facilities. Frequent overflows not only lead to regulatory problems but also increase the treatment cost. Leaking systems will result in the erosion of soils through the leaking joints leading to the settlement of the ground surface, formation of sinkholes and damage to surrounding pavements and structures. Literature review indicated that Standard ASTM pipe-joint tests varied with the type and size of pipes. In order to quantify the infiltration at various types of pipe-joints, a unified testing program was developed to test 30-in. diameter (76.2 mm) sewer pipe-joints up to a hydrostatic pressure of 50 kPa (7 psi). A testing protocol was developed and approved by a steering committee with representation from the USEPA, pipe associations, cities and consulting engineers. The testing protocol outlined the procedures to determine the leakage rates at pipe -joints under shear loading and angular deflection. A testing facility was designed and constructed in the CIGMAT Laboratory at the University of Houston. Pipe joints were tested in duplicate. Concrete pipe joint, PVC pipe joint, fiberglass pipe joint and clay pipe joint were tested. Relationships between shear strength at the pipe joint, deflection of the pipe and the angle of rotation of the pipes at the joint have been developed.
Sewer Pipe-Joint Infiltration Test Protocol Developed by CIGMAT
While a number of small to large older cities are undertaking repairs and maintenance, several other newer cities are planning for installing wastewater systems. Infiltration due to leaking pipes, manholes, laterals and other components of a wastewater system will add to the problem of overflow and over load the treatment facilities. Frequent overflows not only lead to regulatory problems but also increase the treatment cost. Leaking systems will result in the erosion of soils through the leaking joints leading to the settlement of the ground surface, formation of sinkholes and damage to surrounding pavements and structures. Literature review indicated that Standard ASTM pipe-joint tests varied with the type and size of pipes. In order to quantify the infiltration at various types of pipe-joints, a unified testing program was developed to test 30-in. diameter (76.2 mm) sewer pipe-joints up to a hydrostatic pressure of 50 kPa (7 psi). A testing protocol was developed and approved by a steering committee with representation from the USEPA, pipe associations, cities and consulting engineers. The testing protocol outlined the procedures to determine the leakage rates at pipe -joints under shear loading and angular deflection. A testing facility was designed and constructed in the CIGMAT Laboratory at the University of Houston. Pipe joints were tested in duplicate. Concrete pipe joint, PVC pipe joint, fiberglass pipe joint and clay pipe joint were tested. Relationships between shear strength at the pipe joint, deflection of the pipe and the angle of rotation of the pipes at the joint have been developed.
Sewer Pipe-Joint Infiltration Test Protocol Developed by CIGMAT
Vipulanandan, C. (author) / Liu, J. (author)
Pipeline Division Specialty Conference 2005 ; 2005 ; Houston, Texas, United States
Pipelines 2005 ; 553-563
2005-08-19
Conference paper
Electronic Resource
English
Research , Maintenance , Pipe materials , Wastewater management , Inspection , Drilling , Installation , Infiltration , Joints , Design , Pipes , Sewers , Rehabilitation , Optimization , Pipelines , Tunneling
Sewer Pipe-Joint Infiltration Test Protocol Developed by CIGMAT
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