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  1. rconner

    Carbon Steel RF to Carbon Steel FF Flange Connection a Poor Practice?

    <<<why anyone would deliberately select a raised face flange over a flat face flange if they are tying into a flat face flange>>> Availability? Price? Necessity, or at least perceived necessity (e.g. they can get the item quickly, or off the shelf with raised face, but have to wait for flat)...
  2. rconner

    Carbon Steel RF to Carbon Steel FF Flange Connection a Poor Practice?

    fyi http://www.eng-tips.com/viewthread.cfm?qid=290249
  3. rconner

    High Pressure Gas - Lapped Joints Connections?

    fyi http://www.eng-tips.com/viewthread.cfm?qid=366161
  4. rconner

    Pipe manifold concrete support saddles

    As to question concerning "cushions between steel and concrete", Mr. Russell Barnard of ARMCO Steel delivered a paper at the 1946 AWWA Annual Convention on the development of steel water pipe standards (that was reprinted as a stand alone pamphlet in 1948). This paper/reprint referred to...
  5. rconner

    Does a confined space entry course give you continuing ed credits towards your PE?

    <<<not technical enough to count as pdh's>>>??? Many states are not only approving e.g. ethics training for pdh's, but even requiring same specifically/regularly. Is this wrong because same deals more with right and wrong than "technical"?? Aspects of confined space training are technical, and...
  6. rconner

    Does a confined space entry course give you continuing ed credits towards your PE?

    <<<I am not a lawyer, but for the above quoted state could you prove that it directly benefits the health, safety, or welfare of the public?>>> IMO (for whatever that is worth) a whole lot of folks and perhaps even the "public" can benefit from confined space training, and various sorts of...
  7. rconner

    Flange coupling adapter vs. flange by MJ adapter.

    The word "adapter" or adaptor is (IMHO) a sort of generic or proprietary device term, that does however imply a conversion of a factory or cut pipe spigot end to an in some configuration simulated flanged end (e.g. to allow a flanged piping or valve etc. item to be inserted into the line, and/or...
  8. rconner

    PN40 Rated Loose flange &amp; stub end connection

    There are several past threads discussing such structures e.g. http://www.eng-tips.com/viewthread.cfm?qid=266009.
  9. rconner

    Underground Piping Supports

    The drawing attached to the 1st post of the OP earlier showed what appeared to be a welded steel pipeline connecting two structures. There appeared however to be four potential sort of "anchor points", one at each structure as well as piers supporting the line aboveground several feet outside...
  10. rconner

    Hydrostatic Test Failure

    While it took some doing, I found a version of at least the second part of the video with quite clear audio (from a speaker who looked strikingly like now departed Glenn Ford!) at https://www.youtube.com/watch?v=-w2ROUiXh1Q. I guess these clips thus may well be from an old "Dowell" safety...
  11. rconner

    CPVC for hot water application

    If you decide not to go with the plastic option, another product/system with greater strength, that can handle UV and quite high water or air temperatures without reduction in strength or stiffness, and that can much reduce support spacing and thermal expansion, contraction and construction...
  12. rconner

    CPVC for hot water application

    Am curious what is the chemistry of the "cooling water" the drain pipes convey?
  13. rconner

    Hydrostatic Test Failure

    Thanks, Don(there is an old saying in research to the effect that a test may be worth a good many opinions). As to the observed conditions of this break in the photo, intersecting cylinder-to cylinder e.g. "tee" pressure connections are an interesting study, with I suspect untold numbers of...
  14. rconner

    Pipe manifold concrete support saddles

    oops meant to say, "...from the standpoint of maximum localized stress due to vertical (weight induced) loads or accelerations there is likely little, if anything, gained by going from 150 to 180 degree saddle angles."
  15. rconner

    Pipe manifold concrete support saddles

    While bimr makes an interesting point concerning lateral loads, so does EdStainless. I would only add I am aware of some research with flexible pipes that fit saddles reasonably well that indicates that at least from the standpoint of vertical (weight induced) loads or accelerations there is...
  16. rconner

    astm d422 - withdrawn!

    Interesting, as this is certainly a well-known standard (fyi https://www.astm.org/Standards/D422.htm). This appears to says the standard was withdrawn in that it was not "updated" within an 8 years window required - a little odd, unless it has been replaced e.g. with e.g. separate new standards...
  17. rconner

    About Piping Welding, Calculations and Codes

    Gabrielsfe, Is there any chance that instead of the "plan view" that you defined in your 13 Mar 17 17:40 post that this is instead a PROFILE drawing view, and the client therefore wants that gentle curve particularly "respected," e.g. to eliminate any need for intermediate supports as well as...
  18. rconner

    Meaning of S.R.?

    Aren't acronyms grand?
  19. rconner

    Thrust Blocks

    While I am more used to seeing flexible restrained joints used basically as hinges to handle normal differential settlements between structures and underground water pipes, as long as chosen coatings and linings for a butt-welded steel system with good foundation and bedding can tolerate the...
  20. rconner

    About Piping Welding, Calculations and Codes

    The OP of course referred to the eventually readable attachment as a "plan view" of an apparently horizontal curved pipeline path, consisting of apparently short mitered 60-inch pipe segments. It was explained later, "The curve is to cross a little river". I furthermore thought I could see some...

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