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  1. 1503-44

    Underground Oil & Water Pipelines

    I believe he said external corrosion, so probably a pinhole or scratch, or poor wrap in the coating. It is unusual, but not unknown to happen within 6mo of installation, especially in acidic, wet soils.
  2. 1503-44

    B31.8 Location Design Factor Change

    Does B31.8 actually require that you subtract undertolerence from the wall thickness? I don't have a new version of B31.8, but old versions do not require that you consider undertolerence. That is already considered in the DF.
  3. 1503-44

    Can we PLEASE go back to the old forum!

    Are you f kidding me. It don't fly. If I wanted Redit, I'd be at Redit. How do I delete my membership? In fact I may not return to find out how. If I ghost you, you know why.
  4. 1503-44

    Nitrogen Leak Test on a Pipe

    Higher N2 pressure cylinders are common. UN/ISO Nitrogen Storage Tank: 424 cu ft, 4500 psi No compressor required. --Einstein gave the same test to students every year. When asked why he would do something like that, "Because the answers had changed."
  5. 1503-44

    Nitrogen Leak Test on a Pipe

    I worked out what 7 fill-pressure balance cycles would look like. After 7 charges, youre at 138.5Bara and you only pick up 5 bars, so you need a compressor to go higher. You can decide what charge cycle to kick it in. Rather than at small pressure increments, I did the problem charging with...
  6. 1503-44

    Boeing again pt2.

    At 22,000 miles out, I think you have to say "separated".[bigsmile] --Einstein gave the same test to students every year. When asked why he would do something like that, "Because the answers had changed."
  7. 1503-44

    Ideas of softwares for Oil and Gas industry

    Maybe you have a better way, or want to write Python versions. https://excelcalculations.blogspot.com/p/petroleum-engineering-spreadsheets.html --Einstein gave the same test to students every year. When asked why he would do something like that, "Because the answers had changed."
  8. 1503-44

    Determine the Maximum Permissible Temperature Drops for Steel when Exposed to Cryogenic Liquid

    PHMSA RESEARCH PAPER Determine the Maximum Permissible Temperature Drops for Steel when Exposed to Cryogenic Liquid Summary and Conclusions The main objectives of this research project were to assess the performance of steel components exposed to cryogenic liquid and determine the...
  9. 1503-44

    Question regarding aluminum design manual 2020

    I don't know that code. Some context of what you are trying to do would help. Anyway try this and see if one of these fits your situation. Torsional Constant And Torsional Shear Constant. http://dir.cisc-icca.ca/files/technical/techdocs/updates/torsionprop.pdf --Einstein gave the same test...
  10. 1503-44

    Looking for threads relating to best practice/calcs for building temporary supports for mobile struc

    There I can tell you a little something anyway. Use some simple static calculations for a billboard at height. Say you have a wind load at a center of pressure 5m above your supporting points. Wind Overturning Moment = Wind Force x height 4000N x 5m =20,000 Nm Weight = 2000N If resisted by...
  11. 1503-44

    Looking for a high pressure flange supplier

    Here we go. --Einstein gave the same test to students every year. When asked why he would do something like that, "Because the answers had changed."
  12. 1503-44

    FEMA's Outdated Flood Zone Maps

    When the rotation period gets to 1 year... were doomed. --Einstein gave the same test to students every year. When asked why he would do something like that, "Because the answers had changed."
  13. 1503-44

    Drilled gas pipe

    No contact. --Einstein gave the same test to students every year. When asked why he would do something like that, "Because the answers had changed."
  14. 1503-44

    Looking for threads relating to best practice/calcs for building temporary supports for mobile struc

    I've seen lots of strange looking things in the deserts. Seldom can you trust that anything will be built to what you are accustomed to seeing and level floors are not high priority. Generally, if the bathrooms have running water and lights come on, you won the battle. Most of us here tend to...
  15. 1503-44

    Channel beam for Suspended ceiling

    Right. Loads come in all varieties. The important thing is to get the roof strong enough to hold the total load. I was never particularly worried about hpw a ceiling might be suspended below it. I guess I just trusted that the ceiling contractor had many tricks in his bag. --Einstein gave...
  16. 1503-44

    Contract Clause Question

    First option. Rest is overthought storm in a teacup, which will probably result in more unnecessary inconvenience for you and just irritate the client when he has to devote time to addressing even more nonspecific conditions and details. If you want to change it, let your lawyer tell you why...
  17. 1503-44

    Channel beam for Suspended ceiling

    Higher roof live loads might require the channels. Doubtful that they were placed there for a suspended ceilings benefit. Ceilings generally have to use an attachment system based on whatever is appropriate for whatever is available to attach to. --Einstein gave the same test to students...
  18. 1503-44

    Looking for threads relating to best practice/calcs for building temporary supports for mobile struc

    Something other than a skid mount sitting on gravel? I can't even recall ever building a concrete slab for these, although you often find them set on existing slabs, or actually an existing parking lot pavement. Gravel, oyster shell, etc. padding is the best I've ever used. Set on wood blocks...
  19. 1503-44

    Boeing again pt2.

    At 22,000 mile altitude, are they not well above the bulk of the debrie field? --Einstein gave the same test to students every year. When asked why he would do something like that, "Because the answers had changed."
  20. 1503-44

    FEMA's Outdated Flood Zone Maps

    Claudette https://en.m.wikipedia.org/wiki/Tropical_Storm_Claudette_(1979) I was in Houston in 79 and 83 (Camile). Both were very wet storms. Alicia (also 83) washed out a number of my Galveston to Port Lavaca fishing spots. I was living behind Barker Flood Control Dam then wondering how high...

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