Illinois Plumbing Code Practice

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Prepare for the Illinois Plumbing Code Exam with our comprehensive quiz that includes flashcards and multiple-choice questions to bolster your understanding of plumbing standards and regulations. Gear up for your test!

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To determine the liquid holding capacity in gallons of a plumbing fixture, multiply the length by the width by the height in inches and divide by what number?

The correct answer is: 231

The correct approach to determine the liquid holding capacity in gallons of a plumbing fixture involves calculating the volume in cubic inches and then converting that volume into gallons. The formula to find the volume in cubic inches is to multiply the length, width, and height of the fixture, all measured in inches. To convert cubic inches to gallons, you divide the total cubic inches by 231, because there are 231 cubic inches in one gallon. This conversion factor is standard and is used widely in plumbing practices to ensure accurate measurement. Therefore, using 231 aligns perfectly with the requirements for plumbing calculations, making it the appropriate choice for determining the liquid holding capacity in gallons from cubic inches.