Span for 3x10 pine header?

[cockeyedMFer]

That fractional explanation simplifies it, thanks! I was trying to break it up by how much each beam supports but I always overcomplicate it - that's why I switched majors after a year or mechanical engineering LOL.

So the 16' beams and the ledger boards at the rear wall, which hold the 12' beams, are supporting the entire load. That means the 16' beams are sharing half the load along their entire length, and each 16' section supports 1/4 of the total?

If so, the total load at 40psf would equal (12x32)x40=15360. Divided in fours that's 3840# per 16' beam. That's the same number I came up with using another method. And its within spec according to the tables you provided.

What do you think?

 

[quicksandfarmer]

That fractional explanation simplifies it, thanks! I was trying to break it up by how much each beam supports but I always overcomplicate it - that's why I switched majors after a year or mechanical engineering LOL.

So the 16' beams and the ledger boards at the rear wall, which hold the 12' beams, are supporting the entire load. That means the 16' beams are sharing half the load along their entire length, and each 16' section supports 1/4 of the total?

If so, the total load at 40psf would equal (12x32)x40=15360. Divided in fours that's 3840# per 16' beam. That's the same number I came up with using another method. And its within spec according to the tables you provided.

What do you think?

I accidentally saved my post before it was finished. See if the edited version makes more sense.

 

[cockeyedMFer]

Aha! That's even better. The 6x6 posts are going to sit on 1 foot square 4 or 6" thick quickrete piers, with a rebar pin to prevent lateral movement of the post or pier. The floor is hard pack clay that's seasoned for a couple years. Hopefully this year I'll be doing some concrete floor work and I'll tie it all together eventually.