The UPC's Table 1002.2 publishes trap-arm limits in inches. What is the maximum developed length permitted for a 2-inch trap arm?
Not quite. The answer is C: 60 inches (5 feet)
A 2-inch trap arm may run 60 inches — 5 feet — of developed length under Table 1002.2. The wrong answers are the neighbouring rows: 30 inches is the 1¼-inch limit, 42 inches the 1½-inch limit and 72 inches the 3-inch limit.
Reference: UPC 2021 Table 1002.2 (Horizontal Lengths of Trap Arms)
Checked against the official text
Table 1002.2 is not supplied at the exam desk and must be memorized. The 2015 edition's table was not read directly; confirm against your 2015 book.
More Washington Journeyman Plumber practice questions
Trade Code Wizard is not affiliated with, endorsed by, or licensed by the International Code Council (ICC), the National Fire Protection Association (NFPA), IAPMO, the ESCO Institute, NATE, HVAC Excellence, NASCLA, NICET, the U.S. Environmental Protection Agency, PSI, Prov, Pearson VUE, or any state or local licensing board. Exam and code names are used only to identify which examination this study material prepares you for.
These are original practice questions written to publicly published exam content outlines. They are not actual exam questions, and they do not reproduce code text. Explanations cite code sections and state requirements in our own words — always verify against the code edition your jurisdiction has adopted, which may differ from the edition cited here.
Passing is not guaranteed. This is study material, not a substitute for the adopted code, for your licensing board's requirements, or for qualified instruction.