MD&M practice problem of the week

[YW55]

 

[Slay the P.E.]

View attachment 12735

LOL.

No. I'm afraid not. There are like 6 or 7 problems in this thread. Did you work them all?

 

[23and1]

That's what it looks like to me.  This would be the simple supported beam in the appendix where R=wl/2. 

I should have used this rather than the moment equation which would have been a bit quicker.  

Whoops...

It only took me 10x looking at that sketch to realize that pinned connection. Another silly mistake to avoid during the real thing this Friday. Thanks for your help @Castaway81

 

[Castaway81]

I am glad you brought it up as I wasn't even paying close attention to the end connections either.   I think my biggest focus going into Friday is making sure I don't make any small mistakes.   Especially since you know that answer will be one of the options.  Best of luck with the rest of your preparation.   

 

[Slay the P.E.]

SPOILER ALERT: Attempt to solve it before scrolling down and reading the responses.

View attachment 10923

Friendly reminder that this thread is still relevant.

Cheers, and good luck

 

[Sam N]

Its asking for normal stress

 

[Slay the P.E.]

Its asking for normal stress

Correct. The normal stress is due to two sources: the axial force normal to the section, and the bending moment due to the external load.

 

[Sam N]

I think its been answered before.

Someone said (C) - 0.5.

Im getting the same.

 

[Slay the P.E.]

Correct, (C)

yes, all problems in the thread have been answered and thoroughly discussed.

 

[Abogos]

Happy Thursday. Here's the problem of the week;

SPOILER ALERT: Try to solve it before scrolling down and reading the discussion.

View attachment 10959

Could you please post the solution to this problem? I am not getting 2 for the factor of safety. 

Edit: I got it, thanks.

 

[Slay the P.E.]

Could you please post the solution to this problem? I am not getting 2 for the factor of safety. 

Edit: I got it, thanks.

Excellent.