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Finding maximal span moment

Finding maximal span moment

Finding maximal span moment

(OP)
I calculated the structure using Cross method. I compared it to computer results and they where fine!
I know all the joint moments, transfersal/axial forces, reactions...but I dont know how to find maximal span momants.
I have also determined the position of the max span moment using transfersal forces diagram, but I cannot get the right results for itsad
Can you help me please. Thanx!

Heres the link to the picture:
http://img230.imageshack.us/img230/8792/momww5.jpg

RE: Finding maximal span moment

Are you a student?

RE: Finding maximal span moment

Depending on the computer program you are using, you should be able to have the program give you interim values of shear, moment, and maybe deflection along the length of each beam if you tell it to.

Otherwise, you will have to combine the fixed end moments with the beam simple beam moments, either graphically, or by equation to find your answer.

Mike McCann
McCann Engineering

RE: Finding maximal span moment

(OP)
So theres no way to do it like I posted in the picture before, by cuting the frame verticaly at egsact position where the max bending moment is....but it seemed so logical?! sad

RE: Finding maximal span moment

If you can write the equations for that point, yes you can solve for it directly.  Good luck.  It can be done.  The computer does it.

Mike McCann
McCann Engineering

RE: Finding maximal span moment

(OP)
Lets say that the height of a story is 3,00m , x=2,50 meters and that uniform linear load is 20kN/m and also in the upper beam N=-40kn...I would have this
Mmax= 145,68*2,50 + 14,23 - 14,12*3,00 - (20*2,50*1,25)*2 - 40*3,00 correct?!

RE: Finding maximal span moment

(OP)
Just look at the picture before.

RE: Finding maximal span moment

(OP)
o.k. I found the EASY waywinky smile

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