Humber/Ontario Real Estate Course 4 Exam Practice

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Which of the following is a key function of relief vents in a plumbing system?

  1. To allow fresh air into the drainage system

  2. To increase water pressure

  3. To manage wastewater temperature

  4. To permit the release of sewer gases

  5. To reduce pipe corrosion

  6. To supply water to upper floors

The correct answer is: To permit the release of sewer gases

The correct answer is D: To permit the release of sewer gases. Relief vents in a plumbing system serve the crucial function of allowing harmful sewer gases to escape safely outside the building. Sewer gases can be dangerous to human health if they accumulate inside a building, so relief vents play a vital role in preventing this by providing a way for these gases to be released into the atmosphere. This helps maintain a safe and healthy environment within the property. Options A, B, C, E, and F are incorrect as relief vents are not designed for those purposes.