Vitrified clay pipe
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Vitrified clay pipe is pipe made from a blend of clay and shale that has been subjected to high temperature to achieve vitrification, which results in a hard, inert ceramic.
Bell & Spigot Pipe manufactured in the U.S. going into the trench
Glazed ceramic pipes, manufactured in the EU
Sanitary sewer
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A sanitary sewer is an underground pipe or tunnel system for transporting sewage from houses and commercial buildings to a sewage treatment plant or disposal.
Sanitary sewer installation with PVC pipe. Sanitary sewers are sized to carry the amount of sewage generated by the collection area. These sewers are much smaller than combined sewers, which are designed to also carry surface runoff.
Manhole access to sewer
Schematic of a conventional sanitary sewer to convey blackwater and greywater from households to a centralized sewage treatment facility.
A manhole cover for a sanitary sewer access point.