span Thanks brian A simple answer would have been nice …………..
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How much dead load will 2x6 hold under 4 foot span
M=sigma *z = P*l/4, for concentrated load in center of beam.
2x6 section modulus, z, = 1.5*5.25^2/6
sigma for a mobile home 2x6, extreme fiber strength in bendin, =1.5ksi in most handbooks.
Run those numbers solving for P with l=48", and you have your answer.
just a word of caution.
He didn't use one period in the original post.
Your formula has a couple........
I'll donate a couple more in case there's a shortage...........
Brian
No need changing your original post-just hit a reply button under the post you are addressing.
Now your original message is lost.............................................