Sir, Is there any standard formulae for finding the fixed end moment calculation of a beam with trapezoidal load( 2-way trapezoidal load from slab) distribution? could you please share any link?
Hey, thanks for the comment buddy. I know what you're referring to, the trapezoidal tributary area for 2 way slab distribution to beams. In this case you'd need to break the load up into different cases and use superposition. You'd have a UDL in the centre, and two triangular loads on the right and left. I'll take a look and see if I can find the FEM formula for this loading.
I couldn't find any deflection tables for what you mentioned. For this case you'll have to either solve for the moments by hand or use some software to generate them for you.
Good question, thanks for the comment man! You can derive these equations using deflection by integration. We did a four part video on it here: th-cam.com/video/39zdlzwDvgI/w-d-xo.html
Learn moment distribution method (Non sway) th-cam.com/video/rI9qaseL1rs/w-d-xo.html Learn moment distribution method with sway th-cam.com/video/RljSGJHvt3A/w-d-xo.html
Learn moment distribution method (Non sway) th-cam.com/video/rI9qaseL1rs/w-d-xo.html Learn moment distribution method with sway th-cam.com/video/RljSGJHvt3A/w-d-xo.html
Hey man quick question, what do we do when we have 2 different loads in the same span. For example let’s say in the span AB is 15m and you have 1 load of 15kn at 5m from A and 12kn at 10m from A. I know you can use the formula 2PL/9 but in this case the P are not the same value. How would you handle that?
@@Kashmirhouseplans Jumping on even later, so I need to do FEM calc, shear and bending diagram for each load on a span then superpostion the diagrams to get FEMab & FEMba that I can plug into the 3 moment equation? Sorry not an engineering student but it is relevant to my job.
You cannot simply assume the internal support to be fixed unless you're using moment distribution method.. In that case i would suggest moment distribution method or three-moment equation method.
AF Math & Engineering yes but Pab²/L² is only applicable to fixed end beams without internal supports. I thought what you did there was moment distribution method since you have the same assumption with the moment distribution method for fixed/propped beams.
@@benjiealviar1137when we find the FEM moments of any span, we assume the ends are fixed end moments. Hence the name 'fixed end moments'. I'd suggest reading your structural analysis book from school for a more in depth theoretical explanation of the concept.
AF Math & Engineering i mastered the solutions to any kinds of loading in restrained beams. However when it comes to that kind of beam, none of my answers were correct. It's because it is analyzed as continuous beam.
@@benjiealviar1137 this example was taken directly from a very reputable structural analysis textbook. This is a common and well known technique that's used in solving a number of structural analysis problems for indeterminate beams. Please consult structural analysis by kassalami for more examples and an explanation.
Learn moment distribution method (Non sway) th-cam.com/video/rI9qaseL1rs/w-d-xo.html Learn moment distribution method with sway th-cam.com/video/RljSGJHvt3A/w-d-xo.html
Learn moment distribution method (Non sway) th-cam.com/video/rI9qaseL1rs/w-d-xo.html Learn moment distribution method with sway th-cam.com/video/RljSGJHvt3A/w-d-xo.html
Click here to see this beam solved using the slope-deflection method! th-cam.com/video/6XoTWs2AmC8/w-d-xo.html
Is the actual Moment Reaction at point E would equal to -375?
thank guy, I have tried to find the way to solve eq. for 2 weeks untill watch your video.
Great glad to hear! Thanks for the feedback
Hi sir, do you have a video that shows proving the formula for the fixed end moment?
hi, what is the formula for getting the fixed end moment of a cantilever with uniformly distributed load?
Sir, Is there any standard formulae for finding the fixed end moment calculation of a beam with trapezoidal load( 2-way trapezoidal load from slab) distribution? could you please share any link?
Hey, thanks for the comment buddy. I know what you're referring to, the trapezoidal tributary area for 2 way slab distribution to beams. In this case you'd need to break the load up into different cases and use superposition. You'd have a UDL in the centre, and two triangular loads on the right and left. I'll take a look and see if I can find the FEM formula for this loading.
Thank you very much sir,it would be so helpful if you do so. And your videos are very helpful. Please keep posting.
Arun dinesh thanks man!
I couldn't find any deflection tables for what you mentioned. For this case you'll have to either solve for the moments by hand or use some software to generate them for you.
Sure sir, I got the values from software.Actually I was looking to solve in by manually too. Ok, thanks for your response sir. :-)
i get confused by diagram on concentrated moment in the table. all the reactions and the load are ccw
Why can you assume the roller support to be a fixed end?
how to derrive the formula
for FEM????
Good question, thanks for the comment man! You can derive these equations using deflection by integration. We did a four part video on it here: th-cam.com/video/39zdlzwDvgI/w-d-xo.html
You can derive it easily by Area-Moment Diagram by parts.
Where will you know the location where you are allowed to cut specially if theres no rollers
Regardless if there isnt a roller, we're just taking the fixed end moments of each span of our beam. This is independent of the end conditions.
Why is sign convention CCW positive?
Learn moment distribution method (Non sway)
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what if the right end is pin supported? can it have FEM?
Learn moment distribution method (Non sway)
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Learn moment distribution method with sway
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Excellent
Hey man quick question, what do we do when we have 2 different loads in the same span. For example let’s say in the span AB is 15m and you have 1 load of 15kn at 5m from A and 12kn at 10m from A. I know you can use the formula 2PL/9 but in this case the P are not the same value. How would you handle that?
Use superposition theorem
I think i am late
But it will help future generations 😅
@@Kashmirhouseplans Jumping on even later, so I need to do FEM calc, shear and bending diagram for each load on a span then superpostion the diagrams to get FEMab & FEMba that I can plug into the 3 moment equation? Sorry not an engineering student but it is relevant to my job.
You cannot simply assume the internal support to be fixed unless you're using moment distribution method.. In that case i would suggest moment distribution method or three-moment equation method.
They're called fixed end moments for exactly that reason: It's assuming that both ends are fixed.
AF Math & Engineering yes but Pab²/L² is only applicable to fixed end beams without internal supports. I thought what you did there was moment distribution method since you have the same assumption with the moment distribution method for fixed/propped beams.
@@benjiealviar1137when we find the FEM moments of any span, we assume the ends are fixed end moments. Hence the name 'fixed end moments'. I'd suggest reading your structural analysis book from school for a more in depth theoretical explanation of the concept.
AF Math & Engineering i mastered the solutions to any kinds of loading in restrained beams. However when it comes to that kind of beam, none of my answers were correct. It's because it is analyzed as continuous beam.
@@benjiealviar1137 this example was taken directly from a very reputable structural analysis textbook. This is a common and well known technique that's used in solving a number of structural analysis problems for indeterminate beams. Please consult structural analysis by kassalami for more examples and an explanation.
0:16 "Cement your knowledge"
any book?
Are you asking what book we used?
@@AFMathandEngineering yup / also any other book with fixed end moment questions?
@@AFMathandEngineering or notes
Structural analysis by kassimali is a great book.
@@AFMathandEngineering Chap no?
thanx sir
+VEGETA SAMA no problem!
AF Math & Engineering sir make video on kinematics of machine - explain velocity diagram and acceleration diagram
thks guys keep it up!!!
Jimenez Pablo thanks bro!
Ra=5.729
Mc=26.875
Rc=3.937
Rb=18.333
Nice! I'll release a video with this beam being solved with the slope-deflection method. Stay tuned!
so wrong
Learn moment distribution method (Non sway)
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Learn moment distribution method with sway
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Ma=50.625
Learn moment distribution method (Non sway)
th-cam.com/video/rI9qaseL1rs/w-d-xo.html
Learn moment distribution method with sway
th-cam.com/video/RljSGJHvt3A/w-d-xo.html