×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

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!
  • Students Click Here

*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

Jobs

PVC pipe design
2

PVC pipe design

PVC pipe design

(OP)
To design an above ground PVC, ambient temperature pipeline can I asume that all segments could have fixed supports? so as I would not need special software but only design the segments as structures. And for water what standards should I use for the structural design?. Thank you

http://albanesmolina.wix.com/home

RE: PVC pipe design

Structural design of supports should comply with your local building code. When full of water, pipe spans for PVC pipe must be limited to relatively short lengths. Deflection between supports can be a significant problem and could interfere with low pressure flows and draining.

Exposed PVC pipe, even in ambient temperature ranges in most parts of the world, can have a very high thermal expansion rate. You should probably have sliding supports in most places, or be sure that "snaking" of the pipe can be accomodated. Allow for appropriate lateral displacements where ends of pipe segments are fixed. You might even consider laying on a continuous, channel-type, beam spanning between pipe supports, if pipe supports are far apart. [o <--rotate 90° left.

RE: PVC pipe design

I'm not really sure what your question / point is so lets break it down a bit.

To design an above ground PVC, ambient temperature pipeline can I assume that all segments could have fixed supports?
Yes you could, though I'm not sure what you mean by "segments". Bits of the pipe?

so as I would not need special software
What sort of sort ware to undertake which part of design?

but only design the segments as structures.
I'm not following you - design of the pipe or design of the supports?

And for water what standards should I use for the structural design?.
What does the contents of the pipe have to do with structural supports / design? If you mean design of the pipe you could probably try some of the AWWA specifications / design documents, but depends on where you are and what you're trying to design.

As BI says PVC still expands quite a bit, has some tendency to creep ( though less than PE) and unless you paint it oruse the right stuff can degrade in UV above ground.

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

RE: PVC pipe design

LI has an important remark: PVC degrades fast in open sunligt.

RE: PVC pipe design

(OP)
My answers after ... below:

-To design an above ground PVC, ambient temperature pipeline can I assume that all segments could have fixed supports?
Yes you could, though I'm not sure what you mean by "segments". Bits of the pipe?

...I mean the segments between supports. My client said all supports would be fixed so that´s what I quoted, many engineers in my company are experts in structural design

-so as I would not need special software
What sort of software to undertake which part of design?
...the design of the supports is not an issue for us but would be if there are sliding or other types of supports. I´ve seen other colleagues use PipePlus for example that handles all types of supports

-but only design the segments as structures.
I'm not following you - design of the pipe or design of the supports?
...only the mechanical pipeline design

-And for water what standards should I use for the structural design?.
What does the contents of the pipe have to do with structural supports / design? If you mean design of the pipe you could probably try some of the AWWA specifications / design documents, but depends on where you are and what you're trying to design.

...I will check AWWA, thanks. It´s water froma a water treatment facility

And yes I know that PVC degrades with the sun, the client said it would be so. This is something we have to check further

Thank you all

http://albanesmolina.wix.com/home

RE: PVC pipe design

(OP)
I guess there was some misunderstanding with my client, I confirmed with suppliers that PVC would only last one year above ground under the sun so it should be buried and I was advised to use ASTM D2241.

http://albanesmolina.wix.com/home

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!


Resources