Re: Piping supports contact surface friction factor

Dear Sajit,

The history of the job is that, considering the expences, construction concerns and the number of supports we are obliged to use simple pipe supprts made of pipes. And because of this Teflon Sliders can not be used.

And that friction factor of 0.3 has been considered based on Petroleum Standards in my country. But now I am looking for some other standards and reliable references to based on them lower friction factor for pipe to pipe contact can be cosidered.

That's all.

Regards,

Keivan

• In PipingDesign@yahoogroups.com, "Sajit Viswan" <sviswan@t...> wrote:
  > May I suggest,
  >
  > The person who raises the question should also say what answers on
  the question that he has already found (Including previous postings on this list), so that the person who answers does not have to start from zero.
  >
  > For a start, have you considered supports with teflon slides?
  >
  > Sajit
  >
  > -----Original Message-----
  > From: k1_m_a [mailto:mashayekh-k@i...]
  > Sent: Monday, November 10, 2003 6:45 PM
  > To: <a href="/group/PipingDesign/post?postID=cxDPtJzpMKopCuDe0hsfkfNL-Hz7JQTssQcscMPOLqr6iLbKbRAMflCTAG1mr_QeHED8fXF09KOdYutr6Cc56PNVSw">PipingDesign@yahoogroups.com</a>
  > Subject: [Man.Distr][PipingDesign] Piping supports contact surface
  friction factor
  >
  >
  > Dear members,
  >
  > Thank you in advance for your kind attention.
  >
  > In the Gas Treating Plant we are working on, we have faced this
  problem that
  > for Flare lines outside the battery limits, the piping supports
  have become
  > very huge.
  > Piping load is big, elevation is high and the supports shall be of
  pipes. But
  > considering 0.3 friction factor for pipe to pipe, the horizontal
  load will be
  > so big that will tend to a huge supprt structure.
  >
  > Is there any reference standard or approved engineering practice to
  stick to
  > that to consider lower friction factor for pipe to pipe surface
  contact?
  >
  > Best regards,
  >
  > Keivan Mashayekh
  >
  >
  >
  >
  >
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