New build

[1234wood]

Any one can help with bents spacing  10x10 bents or 12x12 the building being use for sawmill24x36 or 40ft long i need to get 16 ft logs to mill not sure on bents spaceing  yes I understand and agree  and

[1234wood]

10x 10 timbers or 12x12

[Ljohnsaw]

You need to work from the top down.  Do you have snow?  If so, what's the snow load?  Do you need a permit to build?  Do you have high winds or permit requirements for them?  Then you need to design the roof to meet those requirements.  Once you do that, you will know the loads on beams and posts.  The toolbox on the left will then help you specify the timber sizes.  12x12 is pretty big!

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[1234wood]

Im in lower mi 30lbs yes need permits if i go that way