Find Forces in TRUSSES and CRANES: Simple Tips from IStructE Structural Behaviour Course!

[@DrJQureshi]

Correction 1: At 09:26, I mistakenly said "compression at the top and tension at the bottom" of the crane's cantilever arm. It should be "tension at the top and compression at the bottom."
Correction 2: At 5:35, I should have used sin60 instead of cos60.

[@atiqueahmed8201]

INFORMATIVE TAHNK YOU❣

[@DrJQureshi]

Thank you

[@КольоМамата-ш8г]

I can use the "finite element method with deformation formulation in structural mechanics" to solve it. But it is too complicated :D Great job, Dr Qureshi! :)

[@DrJQureshi]

Thanks a lot. I appreciate your kind comment.

[@rishirathi2012]

at 5.35 while calculating diagonal force, vertical force is equated with Dcos60? I think it should be sin60. Please correct me if I am wrong.

[@DrJQureshi]

@@rishirathi2012 I think it should be cos30 instead of cos60. Let me double check I’ll get back to you. I’m taking a lecture in next 5 minutes.

[@DrJQureshi]

Yes, my mistake, it should be sin60. Thanks for identifying it. I'm grateful to you. I've issued the correction list in comments.

[@rishirathi2012]

Thank you professor. The video is quite educational.

[@DrJQureshi]

@@rishirathi2012 you’re so kind. Thanks.

[@TheAncientColossus]

10:30 How to tell TOP HORIZONTAL member is Compression and BOTTOM HORIZONTAL member is Tension???
This is NOT SHOWN?

[@DrJQureshi]

Sorry, we have tension at top and compression at bottom. The video says otherwise, but it will not affect the calculations of the diagonal. Thanks for identifying the mistake. I'll issue the amendment in comments.