SC Plumber Contractor Practice Questions - South Carolina Plumber Contractor Examination Exam

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A soil stack may be reduced in size in the direction of flow as the accumulated load decreases, but the reduced section shall not be smaller than which of the following?

2 inches, regardless of the original stack size One-half the diameter of the largest stack size required The size of the largest horizontal branch connecting to the stack The size of the building drain

Correct Answer:

One-half the diameter of the largest stack size required

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