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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What is the maximum flow rate of a residential lavatory faucet according to the California Plumbing Code?

1.0 gpm at 60 psi
1.5 gpm at 60 psi
1.2 gpm at 60 psi
2.0 gpm at 60 psi

The correct answer is: 1.2 gpm at 60 psi

The maximum flow rate of a residential lavatory faucet according to the California Plumbing Code is 1.2 gallons per minute (gpm) at a pressure of 60 psi. This standard serves to promote water conservation and efficiency in residential plumbing systems, aligning with California’s commitment to sustainable water usage. This flow rate requirement reflects an effort to reduce excess water usage while still ensuring that faucets operate effectively for everyday uses, such as washing hands and brushing teeth. The code sets these parameters to help in managing water supply, especially in areas facing water scarcity. The other flow rates listed, such as 1.0 gpm, 1.5 gpm, and 2.0 gpm, do not comply with this regulation, as they either exceed the maximum allowed or do not align with the efficiency goals established by the plumbing code. Adhering to the specified flow rate helps in achieving both efficiency and practical usability in residential settings.