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  1. 1503-44

    Deflection of plastic pipe

    Deflection should be limited to 0.5" with full loading to limit pooling Note that draining to that level will usually reduce load of the contents and pipe will straighten up, provided there are no external loads. Plastics might not (permanent creep). When complete draining is required, a slope...
  2. 1503-44

    ChatGPT - Nice!

    Careful. I've found that when there is not a lot of information about a subject on the internet, it gets weak. And if there is a lot of information on the internet, but that information is not very accurate, AI often thinks it is. It's only as good as the information it was trained on...
  3. 1503-44

    Elon's Roman Candles

    I thought it needs to go to the Moon Base, then on to Mars.
  4. 1503-44

    Elon's Roman Candles

    Hardly make the news anymore. Whats the problem at SpaceX? It's quite rediculous now. The only way they're going to Mars is if a real accident happens.
  5. 1503-44

    Air India 787 crashes on take off

    ADSB shows they reached 575 to 625 ft altitude over the end of the runway.
  6. 1503-44

    Subject: Dyke Wall Capacity Criteria as per NFPA/OGRA – Class-wise Tank Scenarios in General Plot Plan

    Companies tend to group tanks by similar contents. Only makes sense. But there is no hard rule that I ever heard of.
  7. 1503-44

    Subject: Dyke Wall Capacity Criteria as per NFPA/OGRA – Class-wise Tank Scenarios in General Plot Plan

    I have always used total volume +10. Mostly because large tanks were always individually diked and the ones that were grouped, were usually small tanks and the total volume wasn't a lot anyway.
  8. 1503-44

    What influences GOR?

    Sticky or viscous oils may also get held up more disproportionately to gas flow as pressure decreases. More dissolved gas escapes which may increase the relative viscosity of the oil. As pressure drops, the oil becomes progressively more viscous due to the loss of gas that previously acted as...
  9. 1503-44

    Pipe wall thickness calculation method for t≥D/6 or for P/SE>0.385

  10. 1503-44

    Air India 787 crashes on take off

    I just saw that Captain Steve's latest video has amended his opinion to the same.
  11. 1503-44

    Air India 787 crashes on take off

    I have run videos above, the one with AI flight passing above to the left and another one I found of a flying 787 with with the RAT deployed, for testing purposes, through a sound analysis app called Spectroid. Spectroid makes a waterfall plot of all frequencies and amplitude. I think I see...
  12. 1503-44

    US REFINERIES CANNOT PROCESS LITE OIL

    I think the smaller refineries make those higher octane additives and speciality oils, so they have a better margin. From what I've found out, larger refineries might have a break even year or two, then they get a pretty damn good one. Surprisingly enough that's when the oil prices are going...
  13. 1503-44

    Air India 787 crashes on take off

    Runway is 3500m (11500ft) and the dust cloud after rotation seems to say they used every inch of it. FlightRadar24 corrected their initial position to show they used the full runway. There appears to be a missing ADSB transmission before receiving a position much farther down the runway...
  14. 1503-44

    Air India 787 crashes on take off

    Anybody have a flight track file? FlightRadar24 Initial ADS-B data from flight #AI171 shows that the aircraft reached a maximum barometric altitude of 625 feet (airport altitude is about 200 feet) and then it started to descend with an vertical speed of -475 feet per minute.
  15. 1503-44

    I asked my AI

    Makes sense. I guess. Kind of a good thing for engineers and accountants.
  16. 1503-44

    Single Line on Piping

    JUST DRAW A SINGLE LINE DOWN THE CENTER OF THE PIPE
  17. 1503-44

    advice on construction of a gantry crane frame for a portable demountable hoist

    Post this in the Structural engineering forum. Not much traffic here.
  18. 1503-44

    I asked my AI

    They'll have to walk around with their little Casios. Why can't LLMs hand off their calculations to XL? I checked with https://checalc.com/solved/gasPipeSizing.html The General, or AGA equation should be used. This pipe is too small and short to use other equations. That gives flows 4x the...
  19. 1503-44

    Question on V-Loops

    No, although I think conversing with AI for long periods of time has had a significant effect on my writing style. Why do V-Loops have lower allowable pressures as size increases? Is "Because size increases." not a perfectly logical, if not obvious, answer to the question asked? I am...
  20. 1503-44

    Struggling to Bridge Academic Success & Practical Experience in Aero Eng. Help

    Like drilling dry oil wells. In the quarterly report appears, "We are successfully delineating the reservoir. "

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