Illinois Plumbing Code Practice

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Prepare for the Illinois Plumbing Code Test! Enhance your skills with diverse multiple-choice questions and detailed explanations. Ace your plumbing exam with ease!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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What is the purpose of a properly designed and installed venting system in conjunction with a soil or waste system?

Prevent contamination of potable water
Prevent freezing of water lines
Prevent loss of trap seal, siphonage, aspiration, and back pressure
Prevent corrosion of piping materials

The correct answer is: Prevent loss of trap seal, siphonage, aspiration, and back pressure

A properly designed and installed venting system in conjunction with a soil or waste system serves the purpose of preventing the loss of trap seal, siphonage, aspiration, and back pressure. Venting systems help to maintain the proper pressure within the drainage system, ensuring that traps remain sealed to prevent the escape of sewer gases into the building. Siphonage, aspiration, and back pressure can all occur within a drainage system if it is not properly vented, leading to issues such as sewer gas odors, slow drainage, or even backflows. Therefore, the correct answer is C. Options A, B, and D are incorrect because they do not directly relate to the purpose of a venting system in conjunction with a soil or waste system.