Hi John,
I understand the difficulties with thermoplastic design of piping systems. I have worked for thirty years in thermoplastic pipe design. No matter what the product, the properties can be identified quite easily by standard testing. The standard may need to be amended when new materials are developed but that happened with alloys as B31.3 progressed. Unfortunately based in the antipodese it is difficult to get to meetings.
Geoff Stone
John Luf <jcluf01@yahoo.com> wrote:
And because there are so many flavors of "plastic" piping system components it is also tough to write anything. Manufacturers trying to separate their product from others are always coming up with a new system. Metal is quite easy to deal with as compared to the cornucopia of plastics....
If anyone wants to lend a hand to B31.3 the fellows on that task group for B31.3 are always looking for some good competent help! (They are a friendly lot, but I have already found my niche) our next meeting is this spring in Phoenix Az....
Geoff Stone DD&D Australia <blenrayaust@yahoo.co.uk> wrote: Ladies and gentlemen,
To quote Charles Becht (CH15 Process Piping 1st Edition) in respect of Chapter VII ASME B31.3
"The behaviour of nonmetallic piping is more complex than that of metallic piping, and the design criteria are significantly less well developed. As a result, designers are left to use their best judgement in many circumstances. For example,although a formal flexibility analysis is required, no methods are provided for performing one."
regards
Geoff Stone
Best Regards,
John C. Luf
Cleveland Ohio U.S.A when I'm not in Austria
Member B31.3, Piping Engineer - Stress Analysis, Pipe Supports, Component Design, and Surge Analysis... and according to my daughters master of unimportant trivia
[Non-text portions of this message have been removed]
YAHOO! GROUPS LINKS Visit your group "PipingDesign" on the web.
To unsubscribe from this group, send an email to: <a href="/group/PipingDesign/post?postID=ODUutUp6HhEjm24Q51ZfQEn2-ZjSSdu0pHqsdpheEefkz1TjuZtaMlHWqDqo2QIm95Lqq6kb2evGhYvHiiADxFrbNSI3OoCABfHZ5_EOmA">PipingDesign-unsubscribe@yahoogroups.com</a>
Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Design Detail and Development (a division of Blenray Pty Ltd)
Mail Address PO Box 1351 Castle Hill NSW 1765 Australia Tel Mob 0402 35 2313
Office 02 8850 2313 AH 02 8850 2324
We specialise in pipe network and waterhammer analysis, pipe stress analysis,
the design of buried pipelines and thermoplastic pipe systems.
[Non-text portions of this message have been removed] Received on Thu Jan 05 20:31:00 2006
This archive was generated by hypermail 2.1.8 : Tue Mar 04 2008 - 11:40:45 EST