Rhode Island Journeyman Plumber Practice Exam 2026 - Free Journeyman Plumber Practice Questions and Study Guide

Question: 1 / 400

What is the standard size for a laundry stand pipe?

1 inch

1-1/4 inches

The standard size for a laundry standpipe is 1-1/4 inches. This size is essential because it allows for adequate drainage of the washing machine while preventing potential clogs. A standpipe that is too small may not handle the discharge of water efficiently, leading to backups and overflows. The 1-1/4 inch size strikes a balance between being large enough to allow for proper drainage and compact enough to fit standard plumbing configurations in residential laundry setups.

Choosing this size ensures compliance with plumbing codes, which often specify minimum diameters for drainage systems to ensure they function effectively without issues. This size has been widely adopted due to its practicality in managing the flow rates typically associated with washing machines, aligning well with the necessary plumbing standards.

Get further explanation with Examzify DeepDiveBeta

1-1/2 inches

2 inches

Next Question

Report this question

Download Rhode Island Journeyman Plumber Practice Exam PDF Study Guide
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy