# Bending moment of square tubing

by Brian Simpson
Tags: bending, moment, square, tubing
 Share this thread:
 P: 4 I have some square tubing 3x3x1/4" A36 that will be fixed on one end and free on the other the material 9' long how was I find the bending moment?
 P: 841 Are you hanging stuff off of it? Bending from what? You need the moment of inertia for that cross section, you need the distance from the stress plane to the central axis. and you need the forces that contribute to the bending. An understanding of the method by which the beam is joined at one end would make it more accurate, or you could assume it is rigid.
 P: 4 yes I am just hanging "stuff" from the end of the beam. the actual beam is going to be 9' long lets just say rigid on one end we are going to suspend the load on the end of the beam
 P: 841 Bending moment of square tubing For deflection: http://www.engineeringtoolbox.com/ca...ms-d_1848.html Here's a good reference: http://www.advancepipeliner.com/Reso...n_Formulae.pdf Maybe this too: http://www.me.berkeley.edu/~lwlin/me...Deflection.pdf
Emeritus
Sci Advisor
HW Helper
Thanks
PF Gold
P: 6,481
 Quote by Brian Simpson I have some square tubing 3x3x14" A36 that will be fixed on one end and free on the other the material 9' long how was I find the bending moment?
It's not clear what you mean by 3x3x14" tubing. Perhaps you meant 3x3x1/4" tubing?
 P: 4 Yes sorry 3x3x1/4"

 Related Discussions Mechanical Engineering 1 Engineering Systems & Design 1 Mechanical Engineering 10 Mechanical Engineering 2 Mechanical Engineering 16