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  1. M

    What is "Free length" of springs in safety relief vavles??

    If you go back to ASME BPVC.VIII.1-2017 It looks to me like the unclear 2017 wording has been "improved" by a committee that didn't understand the original requirement, nor the English language, very well. Regardless, "preset" or "presetting" contains the prefix "pre", meaning before. That...
  2. M

    How to protect against frequent breakdown of soft starters at a water pumping station?

    Don't try to solve a problem before you understand it. This statement doesn't make sense to me. Where is this fuse? If designed correctly, a fuse should be reacting to a problem, not causing one. That is to say, if a fuse is blowing it's trying to tell you that something's wrong.
  3. M

    WELDING SYMBOL - AWS

    @ShannXXX Both the original drawing excerpt and the updated rendering are ambiguous. So, while we can say that the filet weld callout is likely incorrect, we can't suggest the correct weld and associated callout.
  4. M

    Maximum concrete durability

    Well, since the max amounts add up to 123% I'd say fail.
  5. M

    Stars, upvotes, and likes.

    I think there's actually more that 3. As to why? The new platform has these options, and they're all turned on.
  6. M

    Semitrailer Chassis construction

    Sure. If you want the rear to be weak or heavy.
  7. M

    what's mine is mine, what's yours is mine ?

    Shorts and DHC are both part of Bombardier, "all in the family". Or at least they were, until the Belfast factory was sold to Spirit. Not the designs apparently.
  8. M

    Weld Callout Leader Direction

    No (as it relates to welding gun angle). Yes, as it relates to joint prep. ^^^^ Edited after a quick review of AWS D2.4 as suggested by @gtaw Gun angle is typically neither an essential nor non-essential variable in a WPS.
  9. M

    Looking for a replacement for bronze sil-brazed unions

    Sorry, but the problem that you're trying to solve really isn't clear. When I ask my wife what she wants for dinner and the answer is "not Italian" I still don't know what she wants to eat. In general, fittings can be attached to pipes or tubes by: Threads Welding Brazing/soldering...
  10. M

    Air India 787 crashes on take off

    That in itself is useful data. If big groups is things stop reporting at the same time you have a common point of failure.
  11. M

    Residential- Curved Stud Walls

    Curved structural insulated panels are apparently a thing. https://www.sips.org/high-performance-curved-sip-house-ennis-mt
  12. M

    Risk of through hole on live piping

    Hot tap, bypass and stop.
  13. M

    Smart Garden System

    Google sheets API. If you use microPython there are many libraries that make the integration between Python and the API easy; unfortunately many of them seem a few years old, and might not have caught up with the latest table features that will make the job easier inside Gsheets. It isn't much...
  14. M

    Miscellaneous Heat Load For Industrial machines

    Ok. As an upper limit, about 14kW per machine. Times how many machines? How significant is that as a percentage of your total cooling load? They're shrink wrap machines, so as an essential part of their purpose they'll be converting a bunch of that directly into heat. If the machine...
  15. M

    seasonal above ground water line for farm use

    Pumping untreated well water through 1,600 feet of black pipe laid out on the ground and into a tank seems like a good setup for breeding bacteria. Do some research on water quality control and treatment before you do this.
  16. M

    Miscellaneous Heat Load For Industrial machines

    What did you actually get? Nameplate data? Power measured at some random moment? Power v time for a day? Something else?
  17. M

    Smart Garden System

    Sure. Pick one with enough analog inputs if you're going to use sensors with analog signals. Define what you need to do first, then pick hardware that supports those needs; not the other way around.
  18. M

    Shell forming method with low out of roundness for thin shell

    A hefty log, heavy wooden hammer and a several strong man with skill and patience.
  19. M

    Smart Garden System

    Seems like everything except the soil moisture sensors could be very close to your micro. For the soil moisture sensors, pick one that supports I2C. That will easily get you 10 meters, probably more with twisted pair.
  20. M

    Waterproofing Membrane Strength?

    It's an unanswerable question. At best you could answer "Maybe". There's no possible way to convince the client that there's zero chance of damaging the waterproofing. Also, it's not really the question that the client wants an answer to. What the client really wants to know is if you will...

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