Simple beam calculation

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Patricia
Posts: 18
Joined: Mon Feb 20, 2017 1:59 pm

Simple beam calculation

Post by Patricia » Fri Mar 10, 2017 11:42 am

Uniform load of a total of 50 lbs even distribution on a 12 foot span with fixed supports.

Square steel tube
1.5 inches square
14 gauge steel (wall thickness of .078")
E = 30000000 psi
I = 0.1502
W = 50lb
L = 12 ft

My deflection calculation differs from "Beam Boy" software and I can't find the error. I get
0.0863 inches of deflection.

I used this formula:

WL^3/384EI

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