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  1. M

    Pulley & Winch Reaction Loads

    You're lacking: Reactions at the "ground". Internal forces and moments at the connection between horizontal and vertical members. Dimensions. With proper free body diagrams of each member, as hinted by @3DDave this is a simple hand calculation, really no need for a "program". Your arrangement...
  2. M

    Looking the section of sprinklers

    Try https://www.eng-tips.com/forums/nfpa-fire-code-issues.184/
  3. M

    Drawing helical internal gear

    Looks like the face you're applying the helix to isn't perpendicular to the bore.
  4. M

    Lift Station Troubleshooting

    There, I fixed that part. What triggers an alarm? What's happened since?
  5. M

    Mathcad If Else Error

    At any rate, MathCAD has a MIN() function that directly returns the smallest value. There's really no need to complicate things with an IF...THEN...ELSE statement.
  6. M

    results of tests as per SA-480

    Seems like you don't trust your metal supplier. There's no amount of paper that can fix that.
  7. M

    Titanium-Stainless Steel Galvanic corrosion

    Unfortunately it's a blind hole, so there is no push. 3DDave beat me to the suggestion of EDM. Or maybe it's time to give up on this case and salvage the movement, bezel etc. for another project.
  8. M

    Corrosion on cable trays.

    I see what look to be HDG bolts and nuts on pipe flanges and conduit clamps in your pictures without corrosion. That suggests the problem is with the specific hardware from the cable tray contractor.
  9. 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...
  10. 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.
  11. 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.
  12. M

    Maximum concrete durability

    Well, since the max amounts add up to 123% I'd say fail.
  13. 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.
  14. M

    Semitrailer Chassis construction

    Sure. If you want the rear to be weak or heavy.
  15. 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.
  16. 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.
  17. 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...
  18. 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.
  19. M

    Residential- Curved Stud Walls

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

    Risk of through hole on live piping

    Hot tap, bypass and stop.

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