Landscaping License Practice Test

What do you call the pipes used to protect lines passing under a sidewalk?

1. Channel

2. Trough

3. Sleeve

4. Conduit

The correct answer is: Sleeve

The term used for pipes that protect lines passing under a sidewalk is "sleeve." Sleeves act as a protective barrier, ensuring that the utilities, such as electrical wires, plumbing, or irrigation lines, are shielded from potential damage caused by pressure from above or outside elements. By providing a separate passageway for these utilities, sleeves help to facilitate maintenance and replacement while preventing disruption to the surrounding area. In contrast, while "conduit" could also refer to protective tubing for electrical wires, it is generally used more specifically in the context of electrical installations rather than for all utility lines. "Channel" and "trough" typically refer to structures for directing water or other materials rather than for protecting lines, making them less relevant options in the scenario of safeguarding lines under a sidewalk.