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That part of the lowest piping of a drainage system that receives the discharge from soil, waste, and other drainage pipes inside, and that extends 30 in. in developed length of pipe beyond the exterior walls of the building and conveys the drainage to the building sewer is the

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Note: Your licensing exam will be based on the plumbing code used in your area.


That part of the lowest piping of a drainage system that receives the discharge from soil, waste, and other drainage pipes inside, and that extends 30 in. in developed length of pipe beyond the exterior walls of the building and conveys the drainage to the building sewer is the






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