Rhode Island Journeyman Plumber Practice Exam 2025 - Free Journeyman Plumber Practice Questions and Study Guide

Question: 1 / 400

How deep shall rock be removed when encountered in trenching?

To installation level of the pipe

3 inches below installation level

When trenching and rock is encountered, the requirement to remove rock to a depth of 3 inches below the installation level of the pipe ensures that there is adequate space for the bedding material and pipe support. This depth allows for proper stability and helps prevent any potential contact between the rock and the pipe, which can lead to damage or misalignment over time.

By allowing this minimum clearance, it facilitates the necessary adjustments and bedding that might be needed during the installation process, ensuring that the pipe is securely placed within a proper foundation. This practice is also aligned with code requirements and best practices in plumbing and construction to ensure long-term reliability and performance of the installed systems.

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Minimum of 6 inches below

Minimum of 12 inches below

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