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

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A 2-inch floor-drain trap arm measures 4 feet to a 90-degree elbow and then 5 feet to the vent, for 9 feet of developed length. Which action brings the installation into compliance?

Leave it as drawn; 2-inch trap arms may run 12 feet Relocate the vent so the centerline developed length does not exceed 8 feet Increase the slope to 1/2 inch per foot and keep the 9-foot run Add a second trap at the vent fitting

Correct Answer:

Relocate the vent so the centerline developed length does not exceed 8 feet

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