Girt Questions- Closing in 24x48

[CunningStunt]

24'x48'
12' eave
6x6 posts 12' OC

I am being told conflicting methods of running girts to attach the tin to.

Half of the barn will be horse stalls and the other half my workshop and a fully finished mother-in-law type setup for a small stove tv and maybe wall hung bed.

Method 1 - 2x6x12 36'' OC on the outside of my 6x6 posts, and then put metal siding on. Then I can pour concrete later eventually frame w/ 2x4's for the half i intend on finishing. My only concern here is the fact that they are 12' spans...if it were 10' oc poles I would have already ran all my girts.

Method 2 - bury 16ft 4x4's in between my 6x6 posts and then continue with method 1 - will cost me over 200 bucks for the 4x4's

Method 3 - 2x6x12's 36" OC but bookshelf orientation using either cut blocks to brace or maybe even joist clamps. the 2x6's would be flush on inner and outside of 6x6 posts.

Method 4 - pull my hair out while researching conflicting ideologies and not actually get any work done.

I am in the southeast and the worst wind i have seen was when michael blew through we had 100mph gust's with no damage.

Any advice is greatly appreciated! Keep in mind i need to be able to insulate at a later date for the shop side and will consider spray in poly foam.

 

[OneOfEm]

I'm in northwest Florida. I'm building a pole barn with 12' eaves, 6x6 posts 12' OC. My local permitting office required engineer-stamped plans. The engineer drew my plans based on the 140 MPH wind load requirements.

My girts are 12' 2x6, attached to the outsides of the posts.

More importantly, the posts are set in concrete in 36" deep 36" diameter holes with six pieces of #5 rebar run horizontally through the post bottoms, 3 each direction, to anchor them in the concrete. Also, there is a continuous footer run around the perimeter, and the rebar in that footer also runs through the outside post anchors.

He also specced Simpson or equivalent connectors for all wood-to-wood connections (except for the girts).

 

[CunningStunt]

Great info. I do not have requirements for pole barns outside city limits, and other than another super rare storm, tornadoes are my only other concern in regards to wind.

my posts are 48" below and set in quickcrete but no rebar. I will however later be laying down concrete which will also go around the posts.

based on what you said about your Girts being outside 12' OC i should be good to go without 4x4's between the 6x6 posts

 

[larry_g]

Common in this country to use 12' post pitch. Either flat or bookshelf per your desire. Mine is a combination of both. One thing to consider on the bookshelf girts. You bottom rim board is on the outside of the posts and used to form concrete. If you use flush bookshelf girts then you will have to kick out the bottom of the metal or have a step or.... I have a 2x6 bookshelf in part of the building and they are offset 1 1/2" to the outside to keep the metal straight and over the rim. Looking back I wish I'd have used a 2x8 for the book shelf girts.

lg
no neat sig line

 

[kbs2244]

The easy way to get the MIL set up would br to pull in a small RV trailer.
Let her do the shopping.