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Direct answer
A plan scale is 1/4 inch equals 1 foot. What does a 2.5-inch line represent is a TradeCert Prep study concept connected to Plumbing License Practice Test prep, not a copied official exam item. A 2.5-inch line contains ten quarter-inch increments, so it represents 10 feet. Always verify licensing, certification, and testing rules with the current official candidate bulletin, state manual, code book, or testing provider before relying on a detail for compliance.
How to use this answer
Read the answer once, then prove it by choosing an answer in a practice question before looking at the explanation. If the miss repeats, tag the domain as Plans and math and drill a smaller set before returning to mixed practice.
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Plumbing License Study Guide
Independent journeyman and master plumber license study guide for state-specific code review, drainage, venting, traps, water supply, fixture units, and trade math.
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Public Plumbing License Practice Test sample questions with explanations.
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