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Pole barn -post distance

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Randy

11-18-2002 14:49:38




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Building a 36x48 pole barn with loft.The plans I have call for 6'x6'on 6' center.Is it possible to go 9'between post?I'm not crazy about all the poles in the shop area but want to be sure I have enough to support the loft.thanks for any input.




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DAVE S.

11-19-2002 19:06:26




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 Re: pole barn -post distance in reply to Randy , 11-18-2002 14:49:38  
I would go with 8' centers so every other truss sets on a post on a 4' center. Unless they are to be set on 3' centers, wich I think is over kill.6x6's are very expensive!



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PatM

11-19-2002 11:02:33




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 Re: pole barn -post distance in reply to Randy , 11-18-2002 14:49:38  
Are you talking about 6 foot centers on the sides only? I hope so!

My shop is 24x40, with the posts on 10' centers on the side walls, one post in the center on the ends. If you want to increase the distance between the posts you'll need to beef up the trusses to carry the additional weight.

Here's a link to Midwest Plan Services (free download, but ya gotta make sure they conform to local code!) MidWest Plan Services Utility Buildings

Another good place to look is in Canada! Canada Plan Service

Lots of good info on both sites, good starting places to plan a building.

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Scott Green

11-19-2002 16:31:59




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 Re: Re: pole barn -post distance in reply to PatM, 11-19-2002 11:02:33  
I always put poles 10 foot apart also. Built some pole barns over the years , along with two for my self. ten foot is fine.



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Randy

11-19-2002 18:27:19




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 Re: Re: Re: pole barn -post distance in reply to Scott Green, 11-19-2002 16:31:59  
Thanks for all your advice, I've decided to make them 9 ft. apart. No snow load in this area, so I think I'll be fine.
Thanks again,
Randy



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RobertTX

11-19-2002 07:21:22




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 Re: pole barn -post distance in reply to Randy , 11-18-2002 14:49:38  
There are some pretty good books out on pole barn construction. They have info that puts you in the ballpark for wind and snow loads in your area, and tables that suggest support spacing based on the tables. Check that and go look at some professionally constructed buildings to get scoped in on what you need to do. As the other guys said, don't try to second guess the people that do it for a business. A barn collapse is pretty sad, and insurance may balk at reimbursing for something that was built below area standard.

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MarkB

11-19-2002 03:15:52




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 Re: pole barn -post distance in reply to Randy , 11-18-2002 14:49:38  
The post spacing is based on a number of factors, including wind load, type of the roof and snow load. If your plans were engineered for your location, then I wouldn't mess with them. On the other hand, 6' OC is pretty close.

My guess is that the pole spacing for your barn is due to the weight of the loft and roof. If you decide to increase the spacing, you should probably beef up the girders to handle the wider spacing. For example, if your plans say the headers should be doubled 2x12's, make them triple 2 x 12's. Also, make sure you have nice big (18" dia.) footings under your poles to support the extra weight.

Personally, I wouldn't recommend second-guessing the engineer.

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Steve

11-19-2002 03:30:58




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 Re: Re: pole barn -post distance in reply to MarkB, 11-19-2002 03:15:52  
What he said!!!! Do NOT second guess the engineer!



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Fred P...........

11-18-2002 14:57:38




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 Re: pole barn -post distance in reply to Randy , 11-18-2002 14:49:38  
6x6 post on 12x12 centers two 2x8 between post for rafters and 2x6 perlings on two foot centers is the way most of the pole buildings are built in this part of the woods. With post on 6x6 I think you could use 2x4 rafters. You may be in an area with a large snow load.



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Burrhead

11-18-2002 16:45:25




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 Re: Re: pole barn -post distance in reply to Fred P..........., 11-18-2002 14:57:38  
I have a 36X48. If you go any closer together than 12' on center for the poles it's hard to get equipment in & out and to work around equipment in the barn.

When I built mine we put used power line poles on 12' centers with 2X8 for joist sleepers then put 2X6 on 2' centers for my loft floor joist.

I floored the loft with mill run 2X6X12 and some 2X4X12.

I don't know what the load limit is but I can stack 50-60 lbs square bales 10-12 high and no problems.

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