Illinois Plumbing Code Practice

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Prepare for the Illinois Plumbing Code Exam with comprehensive quizzes and tailored study materials. Test your knowledge with engaging questions and detailed explanations to boost your confidence and readiness for the exam!

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Each trap shall have a water seal of how many inches?

  1. 1

  2. 2

  3. 3

  4. 4

The correct answer is: 2

The correct answer is that each trap shall have a water seal of 2 inches. This requirement is specified in plumbing codes to ensure that traps effectively prevent the passage of sewer gases into buildings while allowing wastewater to flow freely. A 2-inch water seal provides a sufficient barrier against odors while also accommodating drainage for typical residential and commercial plumbing fixtures. Having a proper water seal is essential for maintaining sanitary conditions and ensuring the efficient operation of the plumbing system. While other measurements may serve a purpose in specific contexts or types of fixtures, the 2-inch requirement is standard for most traps in typical plumbing applications.

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