×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

HDPE Pipe Depth and Backfill Material

HDPE Pipe Depth and Backfill Material

HDPE Pipe Depth and Backfill Material

(OP)
Hi experts,
One of our client replacing CS cooling water buried network with HDPE in gas plant.
1)Does any code/standard recommend how deep we can go or is there any calculation for this to safe pipe from load?
2)Does any code/standard recommend what should be the backfill material for HDPE pipe?
Thanks

RE: HDPE Pipe Depth and Backfill Material

The plastic pipeinstitute produce a very comprehensive guideline which you can download chapter by chapter

https://plasticpipe.org/Shared_Content/Shop/PE-Han...

GPS UK provide a very useful and comprehensive design guide http://www.gpsuk.com/uploads/docs/1636.pdf

Deep - Yes - usually done for collapse, but 1m cover should be fine for all sizes

They like sand or filtered soil, but in reality it is very accommodating to hard elements, but try not to drop large rocks on it....

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

RE: HDPE Pipe Depth and Backfill Material

Hi. As LittleInch already pointed out, PPI is very good reference.
I found very useful also ASTM D2774 "Standard Practice for Underground Installation of Thermoplastic Pressure Piping": this standard defines in a detailed way how backfill should be done: other topics e.g. trench depth (min. 24inch of cover where overhead traffic is expected), installation precautions etc. are described.
AWWA manual M55 is also a good reference: inside you can find several indication and detailed calculation formulas for external loads etc.

RE: HDPE Pipe Depth and Backfill Material

(OP)
Thank you Agnul93 and Littleinch, it really helped

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Resources

Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close