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Thanks for the correction, Prometheus. It was more than fifty years ago, and I have never touched an oxy-torch since then. A good thing I haven't, since I remembered it totally wrongly.

Regarding dtimberlake's comment #14 above, the use of LH and RH threads in gas fittings is for an entirely different purpose. When I was learning oxy-acetylene welding, it was explained to me that (after both gas cylinders had been attached to the welding torch) you turned on the oxygen first...

I can only talk for bicycle threads. These differ between sides so that if there is any friction between the rotating part of the pedal and the fixed part (the part you screw into the crank arm), then on BOTH sides that friction will tend to drive the pedal further INTO the shank rather than...

Your questions are fairly basic. I will reply with a suggestion rather than an answer. Rather than thinking about a problem involving rotational motion, think about a mathematically identical problem involving linear motion. Linear speed instead of rotational speed. Mass instead of...

Unfortunately a lot of "writing contexts" do not support the   "feature", and do not provide equivalent functionality by other means. Similar problems arise if you like to use non-breaking hyphens.

I don't know what the various codes might say, but surely anything that moves is POTENTIALLY dynamic.

I have never been a SAP user, so I cannot offer any specific comments. But if you genuinely have a symmetrical model and you genuinely apply a symmetrical load to it, then all aspects of the analysis results should exhibit the same symmetry. If your results do not show symmetry then your...

' ' This is all way above my pay grade, but an unmatched single quote usually introduces ' some comment text, even if it occurs after some earlier executable code in the line. '

My apologies, Jon. I have not been monitoring things adequately over the last few weeks. Yes! I have had posting rights to that group pretty much since I lodged my request. Thanks for your rapid actioning.

Agreed, LP. Even more ideally, Excel's chart-defining mechanism would include a switch allowing a spreadsheet's author to enforce equal scales. (I use Excel-2010 — maybe later versions do have such a feature.)

Thanks, IR. That page did have a Join Group button, which morphed into a Leave Group button after I clicked upon it. I do not yet actually have write-access to the site of course. This hopefully follows once the box is examined for any black balls. https://en.wikipedia.org/wiki/Blackballing

Obviously you will need to include the beam's self-weight if you "release the supports that have an uplift".

There is a question that has been bugging me since the recent new-format Eng-Tips landed on me with an unexpected THUMP. Under the old Eng-Tips, we could include a non-breaking space in our text using "[ ]". Under the new system that text string is uninterpreted, and appears as its raw...

I struck this message for the first time a couple of days ago, trying to contribute a question to the Engineering Language/Grammar Skills forum. How does one "engineer" an invitation to such a forum?

Apparently I have "insufficient privileges" to participate in the Language/Grammar forum. I can think of some language to describe that state of affairs, but it might be a bit ungrammatical.

Thanks, Eufalconimorph. I meant my post for the "Engineering Language/Grammar Skills" forum.

This forum might be able to answer a question that has been bugging me since the recent new-format Eng-Tips landed on us with an unexpected THUMP. Under the old system, we could include a non-breaking space in our text using "[ ]". Under the new system that text string in uninterpreted...

Thanks, Greg. Dramatically informative material. [My website (https:/rmniall.com) has a spreadsheet for two-degree-of-freedom dynamic systems, which includes a facility for sensitivity analysis. But nothing comparable to what you have presented.]

I have never used PATRAN, and I am probably misunderstanding your question, but ... If ALL your translations are fixed, your axially directed load "never reaches" your column because it goes directly into the support: you need to release that axial restraint.

I suspect that at this stage the simplest and quickest way for you to obtain the scale-equalising VBA code is for you to extract it from one of the downloadable spreadsheets on my website. » Go to, for example, https://rmniall.com/downloads/software-downloads/#ESOEF » Download the ESOEF...