Another set of Pole Barn Questions

[EddieWalker]

Mark has some good advice. Anything that I've said was just in theory and not meant to apply as being the way to build anywhere but where I live.

He also has a good point about the wider the span, the wider that span, the more it will cost. At a certain point it makes a big jump in price. I don't know where that is, but 32 feet sounds like it could be it. When talking to the truss builder, ask them about this. Also ask if they have any trusses that they might have built already and haven't been able to get rid of. I've heard of others who found some awesome deals like this on trusses that the builder never picked up after ordering. He then build his barn to the size of the trusses.

Eddie

 

[bwmarine]

I put up a 50 x 100 commercial pole building a few years ago which is quite a bit more than an agricultural pole building. Found out that for my business it had to meet commercial code.
I purchased my building through Menards... they are great to work with. I basically gave them a drawing of what I wanted, and they figured out a price and the materials needed to construct it. Once I was ok with the plan they had there own engineers draw up a blue print to meet code for my state which is MI. Once I gave them the check they said they could start delivering the materials within 2 weeks including the trusses. My poles had to be set 5ft down and sitting on 3ft round concrete pads. The posts were also treated & laminated instead of just a solid piece.
If interested here is a link of the project from start to finish... Dan

http://www.bluewatermarinesvc.com/html/building.html

 

[yooperdave]

Maybe I should spend the time to read thru all the posts before I jump into this thread.

However, A couple of big concepts with trusses are design loads and spacing.

The further trusses are spaced apart, the more tributary load the truss needs to support.
An attic truss really adds insult to injury because the bottom chord of the truss needs to be designed for bending loads from the attic floor, in addition to axial loads due to typical top chord loading.

If you space the trusses far apart, it would not be unusual to have double or triple trusses located over each post. Sometimes trusses would be composed of LSL or LVL engineered lumber products. In addition, you would need secondary framing to facilitate the attic floor.

If I had true attic trusses, I would build the structure conventially with 2' o.c. truss spacing to facilitate the bottom chords and the attic floor framing.

In summary, you can have attic trusses for a pole building, but you are really pushing the envelope for structural adequacy and economy.

Good Luck,

Yooper Dave