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A platform for research: civil engineering, architecture and urbanism
Testing Wastewater Pipe Joints for Infiltration
Wastewater pipeline infrastructures are critical for cities, counties, and transportation facilities to enhance drainage during rain storms and minimize local flooding. Infiltration due to leaking pipes and other components of a waste water system will add to the problem of overflow and also overload the treatment facilities. Also frequent overflows not only lead to regulatory problems but increase the treatment cost. Leaking systems will cause 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. Because the ASTM pipe-joint tests varied with the type and size of pipes, a unified test protocol was developed by CIGMAT and approved by a steering committee with representation from the USEPA, pipe associations, cities, and consulting engineers. The testing protocol included the procedures to determine the leakage rates at the pipe joints under shear loading and angular deflection. Using this protocol both rigid (clay, concrete, and fiber glass) and flexible pipes (polypropylene, PVC) with 30-in. diameter (76.2 mm) have been tested in the CIGMAT laboratory. The joints were tested to an infiltration hydrostatic pressure of 50 kPa (7 psi). Pipe joints were tested in duplicate. Relationships between shear load, deflection of the pipe, and the angle of rotation of the pipes at the joint with the applied hydrostatic water pressure at the joint have been developed for various types of pipes tested under this program.
Testing Wastewater Pipe Joints for Infiltration
Wastewater pipeline infrastructures are critical for cities, counties, and transportation facilities to enhance drainage during rain storms and minimize local flooding. Infiltration due to leaking pipes and other components of a waste water system will add to the problem of overflow and also overload the treatment facilities. Also frequent overflows not only lead to regulatory problems but increase the treatment cost. Leaking systems will cause 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. Because the ASTM pipe-joint tests varied with the type and size of pipes, a unified test protocol was developed by CIGMAT and approved by a steering committee with representation from the USEPA, pipe associations, cities, and consulting engineers. The testing protocol included the procedures to determine the leakage rates at the pipe joints under shear loading and angular deflection. Using this protocol both rigid (clay, concrete, and fiber glass) and flexible pipes (polypropylene, PVC) with 30-in. diameter (76.2 mm) have been tested in the CIGMAT laboratory. The joints were tested to an infiltration hydrostatic pressure of 50 kPa (7 psi). Pipe joints were tested in duplicate. Relationships between shear load, deflection of the pipe, and the angle of rotation of the pipes at the joint with the applied hydrostatic water pressure at the joint have been developed for various types of pipes tested under this program.
Testing Wastewater Pipe Joints for Infiltration
Saravanan, R. (author) / Vipulanandan, C. (author)
Pipelines 2014 ; 2014 ; Portland, Oregon
Pipelines 2014 ; 1694-1703
2014-07-30
Conference paper
Electronic Resource
English
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