im a student making a i beam from scratch i need to know the weight i can hold them without having deflection dimensions are 1/8" steel
3' in the midddle 3' top and bottom if any one has info they can help plz contact me snipped-for-privacy@aol.com
Zero, zip, nada, none.
Add one extra hydrogen atom to the middle of your beam, and there'll be some infinitesimal amount of bending to go with it.
You need to ask how much load can you put on for a certain amount of deflection. You also need to specify the length of the beam and how the ends are supported. Finally, do you really mean three _feet_, as in almost one meter?
If you are an ENGINEERING student, get off your arse and do some research. Google for " beam deflection" and you should be able to find a plug in formula to do the job for you. You should know that every beam will have some deflection, even if very small. Using computer programmes to do calculations without understanding the basis of the calculation is a recipe for disaster.
What he said, and ....
Learn to use thge shift key!
Use clear, written out measurements, too.
3 feet by 3 feet?Learn to cook. It's likely that, or starve!
Cheers Trevor Jones
He isn't an English major.
Worse, the beam will deflect under its own weight. A thin enough, long enough beam will collapse under its own weight!
Jon
Indeed. There's a difference between deflection and visible deflection, and I imagine it's the latter you're actually concerned about.
Best wishes,
Chris
As someone else pointed out the units are strange, and the length is missing, 1/8 inch plate 3 feet wide? buckling will be a big problem, and simple beam calculations will not be enough. 3 inches might be believable, that would be about 1/2 as thick in the web and 1/3 in the flange as a W4x13 (smallest one in the 9th ed. ASD manual)
Actually, he just said "student", I'm guessing middle school, maybe I'd buy high school if he is not an native English speaker. If he can't communicate with his boss/team members/the people actually building things he designs, he won't be working as an engineer. If he charges a customer for a dozen hamburgers when they order one, he won't be flipping burgers either. While one does not need to be an English major, text message speak is doubleplusungood.
Curmudgeonly; Jay
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