Structural Engineering Made Simple - Lesson 22: Composite Beam Design Using Section Plastic Stresses

[@S24KP6]

Thank you so much, 9:10 is exactly what I was looking for. I was confused why there would be a gap between the top flange and concrete.

[@hauinhvan1686]

Thank you sir, I'm from Vietnam and I'm very happy to watch your video. Hope you can share more. Thanks so much !!!

[@ryanthomson7044]

Thank you! Clearly spoken and well-illustrated. Great run through of AISC Composit beam analysis / design. Rare someone checks their own work.

[@jamshid50]

Dear Ryan, Many thanks for the comment. It is very much appreciated. Regards, Jamshid

[@MostafaGuda]

This is the best video to explain the composite beam design ,Really thank you Jamshid for this

[@jamshid50]

Dear Mostafa, Thanks you for your kind words, Best regards, Jamshid

[@DrJQureshi]

Excellent video, keep it up.

[@hauinhvan1686]

Hello Sir ! You can tutorial the design of composite continuous beams (Girder beam).

[@kisskisssnow]

Thank you sir, you help a lots. When I confusing the PNA lied on the steel web what can I do next, and I found your course, many thank.

[@sportclub8529]

Great sir g

[@ibrahem5900]

In example 2: If we compare the value 21.3 for the stud capacity with the limit Rg Rp Ast Fu which is equal to 19.89, which value shall we consider 21.3 or 19.89

[@karinaf9456]

Perfect!

[@lakshminarasimhan9281]

Thank you for explaining about composite beams in detail. I have a doubt, in the case of Cs < Cflange, how Y2 = hf + t/2 ? shouldn't it be hr + t/2 if profile ribs are provided ?

[@jamshid50]

Greetings, Many thanks for the comment, please allow me to look into your point. Best regards, Jamshid

[@mfcaceresp]

What a great video, I suscribe. Please keep going, your guidance is just great. By the way, can you please clarify me something? I don't understand why when considering the compressive force in the concrete we don't compute "a" as "c/b1", just like reinforced concrete design? being "b1" = 0.85 according to Whitney theory and "c" the portion of concrete under compressive stresses? Thank you for your time!

[@TerrySotiropoulos]

I'm not 100% as I am still studying this course. I'm pretty sure the reason that it is 0.85 is that you need to factor and account for the nonlinear nature of the stress block. We are doing plastic analysis but real life is plastic so we need to add the 0.85 factor to convert the non linear to an equivalent rectangular stress block. We don't compute the other factors like "a" because it is not reinforced concrete in this example its just a simple concrete slab. Someone please correct me if I am wrong anywhere.