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Old 03-30-2010, 11:25 AM   #16
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Building a pole barn, need help


As a farmer I have made many pole sheds and barns ....It is true many people burry the posts but they place the post on a concreate pad with a piece of rubber tubing under it and fill the hole with Gravel and sand mix for drainage.Making sure the bottom slab is is sloped before setting. They also make sure the surrounding land is sloped away from the post...This practice is good for the Midwest and the praires ...it never hurts to pour the Tube with concreat and ancor the post on the surface although tricky if one day a post needs replacing it will be a two man job.

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Old 11-04-2011, 06:26 PM   #17
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The plans for my pole barn (36' x 40' with 19' walls) calls for all posts to be set in 30" dia. x 30" tall concrete, and I live in a VERY wet area on Lake Erie. We are just below lake level and the ground gets regularly saturated. This is indeed how pole barns are typically done, although I have seen them built with the posts attached to the surface as well.

As added insurance, even though it is not shown in the plans or apparently required by code, I am coating the bottom 4 feet or so of each post with a waterproofing mastic typically used in basement/crawl space waterproofing. My plans call for them to be sunk into the concrete 24" and topped with 10" of native soil. When the slab is poured later, that will total around 40" or so of the post that will be buried.

Even though they are pressure treated and the plans or code do not require it....I'm not taking chances.
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Old 11-04-2011, 06:43 PM   #18
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Building a pole barn, need help


90# snow load. Where on earth do you live to get 90 psf snow load? That sounds like Upper Peninsula Michigan. Regardless, I am surprised you ordered a pole barn kit from a manufacturer and got no plans. How did they expect you to put it together? And how do you know it is designed for 90 psf snow load, that is exceptionally heavy, and would generally require extra strong trusses, closer spacing, and special support brackets.
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Old 11-04-2011, 07:18 PM   #19
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Yes indeed....90# snow load sounds way too high. Here in Northern Ohio, my plans show a flat roof design load of 20 psf on a 36x40 barn with typical 4/12 pitch roof.
Was meant to say 9.0 psf?
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Old 11-04-2012, 07:17 AM   #20
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Quote:
Originally Posted by GeneralTJWillys View Post
Yes indeed....90# snow load sounds way too high. Here in Northern Ohio, my plans show a flat roof design load of 20 psf on a 36x40 barn with typical 4/12 pitch roof.
Was meant to say 9.0 psf?

do you still have your plans for your pole barn that you built im wanting to build one myself if anybody has one please email me at john.bolesjr@yahoo.com thanks for looking
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Old 11-04-2012, 09:53 AM   #21
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^ Hi, might want to remove your email form the post. A personal message works better

Last edited by hand drive; 11-04-2012 at 10:22 AM.
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Old 11-04-2012, 10:02 AM   #22
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I've built a few pole sheds.
Around here we use 8' OC posts, and 4'OC rafters. (Some use 4'OC posts under each rafter.) every 2nd rafter sits centered on a post.


We put our posts in the ground leaving them a little tall. Tack 2x10 to inside and out at the top height. Bolt through with double bolts. Cap the top with another 2x10.
No headers are needed (unless you call the 2x10's at the top the header.) Doors in gable end with last rafter doubled up.

With 6'OC posts and rafters I would notch the top side of the posts so the rafter sits in the notch.
Use the 2x6 as the top band. BTW you want treated 2x6 around the bottom for the strapping for the metal to attach to. Leave it so about 1.5" of wood below the metal.
What width is your building? What headers are used in your area for 16' garage doors on a regular garage?
Your going to need support under the ends of your headers. This can be accomplished by - notching the top of the posts if the header is at the top. - using a doubled post and cutting the one under the header to the right length.

Last edited by mae-ling; 11-04-2012 at 10:24 AM.
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Old 11-04-2012, 04:37 PM   #23
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Building a pole barn, need help


if anyone wants to learn more about post-frame buildings (pole barns) check out this link. It will provide with information concerning design, construction and code compliance.

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