Rhode Island Journeyman Plumber Practice Exam

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What is the minimum size for removable strainers used in shower compartments?

0.2 inches
0.25 inches
0.3 inches
0.5 inches

The correct answer is: 0.25 inches

The minimum size for removable strainers used in shower compartments is established to ensure proper drainage and to prevent clogging from hair or debris. A strainer with an opening of 0.25 inches effectively balances the need for adequate water flow while still being small enough to catch unwanted materials, thus maintaining the functionality of the shower drainage system. This size helps ensure compliance with plumbing codes, which specify dimensions to promote efficiency and prevent drainage issues. Choices with smaller openings, like 0.2 inches or lower, may not adequately capture debris, whereas larger sizes, such as those exceeding 0.25 inches, can hinder effective filtration and allow more significant particles to pass through, potentially leading to blockages downstream.