You explained every part of structural analysis in a detailed and simple way! the best Structural tutorial on KZfaq!

Thank you from Brazil! I have watched a great deal of your videos through a Master's degree in structural engineering. They are very helpful!!!

For determinacy check use this equation (3m+r)-(3j+c) Where m=member, r=Number of reaction, J=Number of joints C=Number of internal hinge, for Statically determinate (Ns)=(3m+r)-(3j+c) for externally determinancy (Ne)=r-3-c for internally determinancy (Ni)=Ns-Ni

Yes, that is what was done in the video at 18:05. Ma = 5KN/m * 10m * 10m/2.

Do you have any video on deriving the geometric stiffness matrix?

Thank you Sir I was searching for the exact frames with support but different loading. I was trying to solve it using moment distribution method without first considering its determinacy. This post save my time in doing so.

GOOD JOB! Wonderful explanations except i still dont know Statically determinancy method. Is it with, | Unknowns = Equations x Members | , or | Reactions = Number of Equilibriums + Number of Supports | ... I know it is shown differently even in Hibbeler's book but it should be something... @structurefree

Yea I loved how he tried to call every single member member CD. He corrected himself on the last one but two out of three aint bad

@structurefree why aint we using a point load for member AB when solving the sum of forces in the horizontal direction

Love watching your videos... they helped me through a lot during my degree courses.

Internal moments are zero at the hinge. As long as equilibrium is maintained for each individual element, you are good to go.

u r genius.....just made it reaaalllll simple

Thanks a lot. A stupid question; I got that we have 5 reactions but how did you reach that we have 3 equilibrium equations?

A could never be a roller, check the representation.. Great explanations!

Thank you. Could you please organize your calculation on the screen to get a screen shot for future reference to have a look.

Do we have to assume the direction of reaction forces whatever we do by our own and just balance the other?

Can you make a video for Force Method for Frames? Thanks.

Can anyone explain why there is no horizontal force at Bx? Maybe I'm just misunderstanding hinges but I would assume the uniform load is spread over Ax and Bx.

Amazing and Simple videos

thank u so much bro for dis perfect explnation and good work. just cant find composite structures.

y didn't u do 5*15 in member BC?

with the hinge joint, what happen to the moment Ma... to maintain equilibrium of member AB?... ( i get that hinge doesnt transfer moment... but how would you draw the "blow" of structure and why do we not draw this moment??)

a question, if say the determinancy for this case was 0, as in 3 unkowns and 3 formulas, can you solve this without separating the frame into pieces?

If the pin connection at point D is also fixed, meaning, both A and D are fixed supports, how am I going to draw its shear and moment diagram? Thank you.

Great example and explanations! Thank you.

Great job

if the frame is rigid then its statically indeterminate, if it is pin joined then it is statically determinate. right?

Beat teacher ever

Is there any difference in pin and hinge joint?

when calculating the vertical forces at member Ma, why did you not say (5kn)(10m)(5)?

Thank You. Your video is very helpful.

Bro Love your Videos.Found it to be quite helpful..am currently doing structural Priciples and this is what we are basically doing when studying portal frames(Frames) Cheers bro.. Keep Posting..!!!

Ay should not equal Dy. The loading and boundary conditions are not symmetric.

very nice!

@structurefree hi when we calculate the By and Cy in the member CD, you missed to add the total load in the equation which is 75kn isnt it? can you please check this

* like what you done in Frame Analysis Example 2 (Part 1) about the joint

The number equations on the top and right part of the structure why is it 3?

MrFishhunter That's because we have Sum of Fx, Sum of Fy and Sum of M(moment) you might have got your answer since you asked 6 months ago, but still:)

if it is not a hinge, cant we make free-body-diagram?

@ 6:10 "for each drawing here, I have per drawing" ?

How would I draw this on Space Gass? Well how would i put the hinge in? i.e what is the fixity code?

isnt your support A a roller? how can it take force in X direction

I would like to see the same example with fixed supports in points B and C.

This is awesome....!Thanks

What text book do you recommend?

can you add a video about frames and machines (structural analysis) that is slightly more difficult. Meaning with angles and all.

structurefree ! nice. Are you an engeer ? or ?

very nice example

structurefree Do you have a video of calculation reactions (the reaction of a redundant element) of a frame that is structurally indeterminate?

i love you mate, legit!

A is a fixed connection.

Brilliant

Ma why teken 10 m you have 50 k.n you should be take half 10 not 10 yes or no ?

Ugh. I did the left side member second.... Take moment about A trying to figure out what Bx is..... Idk why you can't do this gives the wrong answer for Bx 😩😔😔😔

in third step for horizontal member calculation, its not member CD its member BC...

thanks sir..

isnt it number of parts and not equations?

Thanks a lot

Ma = 5kn/m * 10 m * 5m.

Member CD,why cx=0

Just since we have 3 beams :S?

Thank you

why ?

Lol you'd make a cool professor

i want from you more exampel about frimes i have exam after 4 days and my doctoer so bad he give me hard exam and bad graeds XD

Thnx alot

It sucks majorly that none of the examples are just a simple frame and point load. I just want to see how it's done, and this doesn't do it.

really helpful keep it up.

the shape semetric so Ya equl Yd

By is +37.5 ryt???

I don't understand at all ...

the solution is wrong. there should be transfer of moment at B and C too...u r transfering only the loads...what about the moment...even it should be transfered from A to B and B to C... And when u check dis sum in frame design app..the value of Ma comes out to be 144.5 KNm pls correct this

Very bad

Can I have your email bro?