CSLB Class B General Contractor's License Practice Exam

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Prepare for the CSLB Class B General Contractor's License Test with interactive flashcards and multiple choice questions. Each question offers hints and explanations to enhance your understanding and readiness for the exam.

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Which of the following is a requirement for indirect waste pipes?

Must connect directly to the drainage system
Must be of at least 2 inches in diameter
Shall not connect to a plumbing fixture directly
Must be made of PVC only

The correct answer is: Shall not connect to a plumbing fixture directly

The requirement that indirect waste pipes shall not connect to a plumbing fixture directly is rooted in the purpose and function of indirect waste systems. Indirect waste piping is designed to prevent the contamination of the potable water supply by allowing wastewater to flow indirectly into the drainage system. This is typically accomplished by connecting the waste pipe to a drain or receptor (such as a floor sink or a catch basin) rather than directly to the fixture itself. This design helps to maintain a clean water supply by creating an air gap between the discharge point of the waste and the drainage system, which is critical in avoiding backflow and siphoning of potential contaminants. Thus, this requirement ensures that there is a clear distinction between the fixture that handles clean water and the drainage system receiving waste, promoting public health and safety standards in plumbing practices.