What unit is used to specify vent sizes in the plumbing code described?

Study for the Kentucky Journeyman Plumbing Test. Use flashcards and multiple choice questions with hints and explanations to improve your knowledge. Prepare for your exam effectively!

Multiple Choice

What unit is used to specify vent sizes in the plumbing code described?

Explanation:
Vent sizes are expressed by the inside diameter in inches. In U.S. plumbing practice, pipe sizes are given using nominal sizes measured in inches, and venting tables in the code specify diameters like 1/2", 1", 1-1/2", 2", etc. This inch-based system aligns with standard pipe stock and the calculations that determine how much air a vent must admit to prevent siphoning. Metrics (meters, centimeters) aren’t used for vent size in these codes, and feet are used for length, not diameter.

Vent sizes are expressed by the inside diameter in inches. In U.S. plumbing practice, pipe sizes are given using nominal sizes measured in inches, and venting tables in the code specify diameters like 1/2", 1", 1-1/2", 2", etc. This inch-based system aligns with standard pipe stock and the calculations that determine how much air a vent must admit to prevent siphoning. Metrics (meters, centimeters) aren’t used for vent size in these codes, and feet are used for length, not diameter.

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