Illinois Plumbing Code Practice Exam 2025 – All-in-One Guide for Exam Success!

Question: 1 / 400

How many trapped and invented floor drains are required for any building or structure with Plumbing fixtures on the level of the concrete floor?

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The requirement for trapped and vented floor drains is primarily based on ensuring proper drainage and preventing the accumulation of water or hazardous materials in spaces with plumbing fixtures. According to the Illinois Plumbing Code, a minimum of one trapped and vented floor drain is necessary for buildings or structures with plumbing fixtures installed at the level of the concrete floor. This drain serves multiple purposes, including facilitating drainage from fixtures, preventing sewer gases from entering the building, and aiding in proper drainage of any water that may accumulate in the area.

While some installations may warrant additional floor drains based on specific circumstances, such as the size of the area or the number of fixtures, the basic requirement starts with one functional unit. Therefore, the answer identifying one trapped and vented floor drain aligns with established plumbing regulations for adequate drainage and safety in building design.

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