Rhode Island Journeyman Plumber Practice Exam

What is the minimum size for floor drain strainer openings?

1. 3 pounds per square foot

2. 4 pounds per square foot

3. 5 pounds per square foot

4. 6 pounds per square foot

The correct answer is: 4 pounds per square foot

The minimum size for floor drain strainer openings is specified in plumbing codes to ensure sufficient drainage capacity while preventing the entry of debris that could clog the drainage system. The choice of four pounds per square foot as the correct answer aligns with various plumbing standards that set a minimum load-bearing requirement for floor drain strainers, ensuring they can accommodate typical traffic and prevent damage under normal use conditions. This specification is crucial for maintaining the functionality of drainage systems in both residential and commercial settings. The design also considers the need for adequate water flow and catchment efficiency, ensuring that drains do not back up during heavy usage or in high-traffic areas. In contrast, the other options present higher minimums that may not be necessary or practical in typical installations, thus highlighting the importance of adhering to established standards for effective plumbing practices.