Underground Pipe Need Sleeve Under Road?

9/30/2022

Does plastic underground pipe need to be sleeved when going under a road or driveway?

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7 Comments

Glenn Berger

9/30/2022 08:06:48 am

A properly installed underground piping does not required to be sleeved below a roadway. However, a sleeve may be desired based upon the depth of bury and roadway design.

David Kendrick

9/30/2022 09:13:35 am

When to sleeve underground.

1. When the customer wants areas to be sleeved.
2. When the scope of work requires it. For example right of way crossing of railroad tracks and easements. Even for private customer sidings.

With this knowledge discuss sleeving with the customer and document the conversation as well as their decision as to go / no go would be advisable.

I've seen business interruptions due to water line failure.

The cost of welding up a sleeve in trench in this project was much cheaper than the cost of loosing loading dock access for over a week.

Jesse

9/30/2022 09:27:33 am

We do a lot of UG work, and this comes up a lot. There isn't inherently a requirement I'm aware of to sleeve plastic UG under a drive unless its not deep enough. I can however see builder specs or AHJ requirements being a factor.

Ryan Hinson

9/30/2022 11:00:17 am

Suggest consultation with the piping mfgr.

HDPE can generally be buried 'without calculation' with a depth of cover of 3 ft under roads where the AASHTO H20 max loading is expected per the HDBK of PE Pipe Chapter 6 Table 3-1 and AWWA M55 Chapter 5.

PVC can be installed with minimum cover of 2 ft depending on the specific loading anticipated per AWWA M23 Chapter 4.

Minimum frost depth, top surfacing application, construction progression, ambient soil bearing strength, and loose lift compaction of the backfill also come into play for each.

Emil Ohler

9/30/2022 01:16:23 pm

NFPA 13 2019 6.4.2.2.3 addresses the bury depths
and then 6.8 addresses the backfill requirements

Burnice Bauch link

6/13/2023 05:33:49 am

Great blog post on the importance of using sleeves for underground pipes under roads! It's crucial to protect pipes from the pressure and movement of the surrounding soil and traffic load. The detailed explanation and visuals provided in your article are helpful in understanding the process and why it's necessary. Thanks for sharing this informative piece!

Plumbers Palm Coast FL link

11/24/2023 12:02:35 pm

Insightful article highlighting the critical role of sleeves in safeguarding underground pipes beneath roads. The comprehensive explanation and visual aids effectively underscore the significance of this protective measure against soil pressure and traffic load. A valuable resource for anyone involved in piping and repiping projects. Well done!

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Underground Pipe Need Sleeve Under Road?

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