According to Michigan plumbing regulations, what is the minimum pipe size required for a water service line serving a single-family residence?
Correct Answer
D) 3/4 inch
Michigan plumbing code requires a minimum 3/4 inch water service line for single-family residences to ensure adequate water pressure and flow.
Why This Is the Correct Answer
According to Michigan plumbing regulations, a 3/4 inch water service line is the minimum required size for single-family residential properties. This diameter ensures adequate water pressure and flow rate to meet typical household demands including multiple fixtures operating simultaneously. The 3/4 inch requirement balances cost-effectiveness with performance, providing sufficient capacity for standard residential water usage while maintaining proper pressure throughout the home's plumbing system.
Why the Other Options Are Wrong
Option A: 1 inch
A 1 inch water service line exceeds the minimum requirement and would be unnecessarily large for most single-family residences. While it would provide excellent flow and pressure, it represents overbuilding and increased material costs without significant benefit for typical residential applications.
Option B: 1-1/4 inch
A 1-1/4 inch water service line is significantly oversized for single-family residential use and exceeds Michigan's minimum requirements. This size would typically be used for larger buildings or commercial applications where much higher flow rates are needed.
Option C: 1/2 inch
A 1/2 inch water service line is too small for single-family residential applications and falls below Michigan's minimum requirements. This size would result in inadequate water pressure and flow, especially when multiple fixtures are used simultaneously, creating poor performance and potential code violations.
Memory Technique
Remember '3/4 for the door' - three-quarters inch gets water through your front door and serves your home adequately.
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A residential foundation wall in Michigan is 8 feet high with 2 feet above grade. If the soil exerts a lateral pressure of 45 psf per foot of depth, what is the maximum lateral pressure at the bottom of the foundation?
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