- Study guides, Class notes & Summaries

NHIE - Plumbing and Structure Question and answers already passed 2025/2026 The size of toilet waste pipe is __ inches. - correct answer 3 Interior wall plumbing supply pipe is __ inch. - correct answer 1/2 Requirements for plumbing vents: __ inches from a parapet wall, __ inches above a roof, and __ feet from opening windows. - correct answer 12, 6, 10 The maximum length of flex gas tubing to a dryer is __ feet. Can flex gas pipe be cut? - correct answer 6, no Which are l...