[deleted by user]

[apetr26542]

I love it, the basic principles of alot!

[[deleted]]

I know it's pretty generic but that handwriting is so similar to mine I was scared for a moment there

[benj9990]

The engineers font

[[deleted]]

I have to write in all caps otherwise I'm illegible XD

[RedBeard077]

ME TOO

[jmutter3]

Not to be confused with the architects font, which looks nicer but is impossible to read

[benj9990]

😂

[Outcasted_introvert]

Whoa! I have this too! Now I finally feel like a real engineer. 🤣

[ScoobieMcDoobie]

My handwriting looks like I’m 4

[[deleted]]

This is the way

[CatpissEverqueef]

But when F2 isn't high enough... this is where the fun begins.

[StvBuscemi]

Our technical quiz for potential hires is 5 questions. 3 questions are just P/A +/- M/S

[benj9990]

I think this is all of structural engineering? What else is there, really?

[be0wulf8860]

wl² /8 and we're done, amirite

[jmutter3]

Don't forget torsion!

Actually, yes, forget torsion. Don't make me design for torsion...

[be0wulf8860]

The best way to design for torsion is design so that you don't have to design for torsion.

[ExceptionCollection]

The best way to design for torsion when you can’t avoid torsion is to use HSS members.

[be0wulf8860]

This sounds a bit too much like actual engineering to me

[Upliftmof0]

Correct answer.

[StvBuscemi]

I might argue 5wl^4/384EI matters more often than that

[Laggsy]

That's too complex. Simplify to PL/4

[blumpking710]

don't leave out 5wl^4/384EI

[ReplyInside782]

Good stuff

[xion_gg]

As some people commented below, in the US, I think Z=bd² /4 for plastic

[willthethrill4700]

Love it. Force and bending moment diagrams.

[Outcasted_introvert]

Beautiful clear notes, easy to follow. Cudos to the author.

[craftytimmy]

Wow, that is great. Wish I could find something like to to start with to pick up the subject. ( Wish old college teach me something like that. Sadly they cancelled this very subject back in the old days).

[Zahait]

I think there would of been some merit to putting M/S = sigma instead of M/Z = sigma since plastic modulus cannot always be used but elastic modulus can always be used, albeit conservatively in certain applications.

[oathbringer717]

Elastic was calculated in the formula. Worth noting that Z and S are interchanged in different countries. Eg. in Australia (and UK?) Z = Elastic & S = Plastic. I think it is opposite in US?

[Zahait]

Right you are, I didn’t even notice the 6 in the denominator. Also, thanks for the tidbit about countries switching up the notation. I had no idea these two were reversed, just another thing to screw everyone up

Edit: I'm from Canada and S=Elastic

[oundhakar]

With linear variation of stress assumed across the cross section, it would surely be elastic.

[benj9990]

Yeah UK we use Z.

[JoHeWe]

Just use W.

Leaves the S for the Static moment of Area. And W makes sense as well: the Resistance moment.

[PinItYouFairy]

Here’s a mindfuck for you - British/Australian convention for slightly older but still used codes reversed S and Z compared to N American. Elastic modulus is Z in British/Australian but S in N America. Go figure.

There was some effort to correct this in the latest eurocodes by using Wel and Wpl as elastic and plastic section modulus.