Massachusetts Plumbers Journeyman Practice Exam

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What is a pipe that conveys the discharge of toilets, urinals, or fixtures similar to the building drain or building sewer, with or without discharge from other fixtures?

  1. Soil Pipe

  2. Developed Length

  3. Trap Seal

  4. Liquid Waste

The correct answer is: Soil Pipe

A soil pipe is defined as a pipe specifically designed to carry the discharge from toilets, urinals, and similar fixtures, often connecting to the building drain or sewer system. This type of pipe is essential for ensuring that waste is efficiently removed from the building and transported to the appropriate waste disposal system. The design and function of soil pipes are paramount to plumbing systems, as they help in maintaining hygiene and preventing backflow of sewage. The other terms listed do not accurately describe the pipe's function in the same way as a soil pipe does. For example, developed length refers to the total length of a pipe installed, while trap seal discusses the water barrier in traps that prevents sewer gases from entering a building. Liquid waste typically describes the type of waste being handled but does not denote the type of pipe used for disposal. Therefore, calling this pipe a soil pipe is the most correct identification based on its specific role in plumbing systems.