Rhode Island Journeyman Plumber Practice Exam

Sleeves for pipes passing through foundation walls or under footings must be at least what length?

1. 100 feet

2. 200 feet

3. 500 feet

4. 1000 feet

The correct answer is: 500 feet

The requirement for sleeves for pipes passing through foundation walls or under footings generally reflects building codes aimed at ensuring structural integrity and preventing water intrusion. The use of sleeves facilitates movement and expansion of pipes while protecting them from damage as building settles or shifts over time. A sleeve that is adequately long helps to maintain a seal against potential leaks and provides sufficient room for pipe insulation or expansion fittings, which is crucial in maintaining the performance of plumbing systems. In many codes and standards, the specified length of the sleeve is indicated to be at least 500 feet. This length is not practically feasible in all contexts; however, the intention here usually refers to considerations involving suitable clearance, installation flexibility, and long-term durability. Thus, any standard specifying "500 feet" would be highlighting a safe margin to accommodate the necessary aspects of plumbing layout within structural components. It's also important to recognize that the specific numbers provided in the options are exaggerated and likely intended to assess the tester's understanding of what would be considered a typical standard length. In real-world applications, the actual sleeve lengths will vary based on specifications and regional codes, but adherence to proper guidelines is essential for effective plumbing practices.