Written by • April 15, 2026• 3:27 pm• Code Quiz

Code Quiz: Second Quarter 2026

Questions related to the 2021 UPC Study Guide, Chapter 10, Traps and Interceptors

The maximum vertical distance for a tailpiece allowed between a fixture outlet and the trap weir is ______________.

Each plumbing fixture trap shall be protected against siphonage and backpressure by a ______.

A trap arm smaller than 3 inches may change direction without a cleanout if the change in direction does not exceed ______.

The vent pipe opening from a soil or waste pipe, except for water closets and similar fixtures, ______.

Questions related to the 2021 UMC Study Guide, Chapter 10, Boilers and Pressure Vessels

The discharge from a boiler safety valve shall extend outside the boiler room when the _____.

An approved manual shutoff valve shall be installed _______ of a gas-fired boiler.

An approved gas-pressure regulator shall be installed on gas-fired boilers where ___________.

Low-water cutoffs are required except with ______________.

IAPMO
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IAPMO develops and publishes the Uniform Plumbing Code®,the most widely recognized code of practice used by the plumbing industry worldwide; Uniform Mechanical Code®; Uniform Swimming Pool, Spa and Hot Tub Code®; and Uniform Solar Energy, Hydronics and Geothermal Code™ — the only plumbing, mechanical, solar energy and swimming pool codes designated by ANSI as American National Standards — and the Water Efficiency Standard (WE-Stand)™. IAPMO works with government, contractors, labor force, and manufacturers to produce product standards, technical manuals, personnel certification/educational programs and additional resources in order to meet the ever-evolving demands of the industry in protecting public health and safety.

Last modified: April 15, 2026

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