Method of Joints Example Calculation - Truss Analysis - External and Internal Forces on a Truss

[@nil981]

Thank you very much. You just helped me with my studying for my quiz.

[@Eurocoded]

😃 I’m glad to hear that. Good luck with your quiz.

[@sameersalihy7546]

Hi dear teacher! Your videos is very helpful .

[@Eurocoded]

I am glad that you found the video helpful.

[@strattino]

Thank you!

[@Eurocoded]

You are welcome

[@jacobsinger5118]

You have AC cos(45) = 10. But which 10 kN force are you referring too, the horizontal 10 kN force or the external 10 kN force pointing downward?

[@Eurocoded]

Horizontal 10kN

[@jacobsinger5118]

@@Eurocoded thankyou sir, absolutely excellent tutorial!

[@Eurocoded]

@@jacobsinger5118 my pleasure and thank you.

[@sulaimansamatar4459]

Thank you like your explanations

[@Eurocoded]

You are most welcome.

[@amitdebbarma5343]

How to calculate having cross truss diagram.. means 3 unknown member having difficulty

[@butter4774]

Should we always assume that joints BC n AD are Zero ? If there are no forces acting on Fx?

[@Eurocoded]

Yes, that is correct for this truss arrangement (no external horizontal forces are acting on joints B and D). It is a good way to speed up your calculations.

[@butter4774]

Eurocoded what if the arrangement of F. F. F. F orces down truss is like this |/|\|/|\| ^ ^ Hinge. Roller Upon getting the value of Hinge and roller, can we assum that he force Fx at the top is zero using method of joints??

[@butter4774]

Eurocoded your response is very much appreciated. THANK YOU !

[@Eurocoded]

xxshinrielxx If I am following your truss diagram correctly then you can determine the zero force members connected to the top outer two joints just because there are no externally applied horizontal forces. But you will have to calculate internal forces of the rest of the top members. Does that answer your question?

[@Eurocoded]

xxshinrielxx You are most welcome. Happy to help you resolve your truss problem :)

[@gametricks9409]

Sir, how to calculate compression load, (Ned)?

[@Eurocoded]

Zbhh Arfn N.Ed is the design value of the applied axial force. I need context to answer your question. What are you designing? What are the loading arrangements? Etc.

[@utibeukobo4366]

The 10 from the AC=cos45....where did it come from

[@cowboyengineer9227]

did you find the answer to this? that confused me too

[@Eurocoded]

@@cowboyengineer9227 10kN is the externally applied force