Rhode Island Journeyman Plumber Practice Exam

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Study for the Rhode Island Journeyman Plumber Exam. Prepare with flashcards and multiple choice questions, each with hints and explanations. Achieve success in your plumbing career!

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 minimum size for floor drains in public laundries or central washing facilities?

1 inch
1 1/4 inches
1 1/2 inches
2 inches

The correct answer is: 1 1/2 inches

The minimum size for floor drains in public laundries or central washing facilities is specified as 1 1/2 inches. This diameter is necessary to handle the high volume of water that typical laundry activities generate, including washing machines and other appliances. A drain size of 1 1/2 inches ensures sufficient flow capacity to prevent water from backing up, which can create hazardous conditions and lead to sanitation issues in these facilities. Additionally, local plumbing codes and best practices recognize that this size provides a balance between effective drainage and the ability to manage debris that may enter the drainage system, ensuring reliable operation of the plumbing system in high-usage environments like laundries.