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paulz
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# Posted: 6 May 2014 10:53pm
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300 sq. ft. limit, what are the advantages of one over the other in construction, utility and feeling?
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MtnDon
Member
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# Posted: 6 May 2014 11:24pm - Edited by: MtnDon
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Some people will fret over the waste of materials if you build something 15 feet wide. I don't. Lots of the cut offs find uses along the way.
I look at what I want to put into the space. Some dimensions will work better for some uses. The building will be used for many years; one of the most important parts of planning is to be sure it will be a happy fit to your uses.
12' 6" x 24 ??
I am curious though, who or what is setting the limit?
I built on a 15 foot 9 1/2" x 30 foot platform rather than 16 feet for specific structural reasons; T&G sub floor sheets made a more solid floor at that size than if the floor had been exactly 16 feet wide.
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BaconCreek
Member
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# Posted: 7 May 2014 08:03am
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We built 12x24. We originally were going to build 12x20 because of the terrain but I am grateful for the extra footage. Now I wish we had built 16x24.
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paulz
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# Posted: 7 May 2014 09:31am - Edited by: paulz
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Thanks for the replies. My local zoning allows 300 ft. accessory structures without permit.
Yes I suppose 12' 6" x 24 would be worth the extra couple hundred bucks in the long run.
At that size I can use two girders for post and beam, at 15 width I'd likely need 3?
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MtnDon
Member
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# Posted: 7 May 2014 09:59am
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16 feet width is possible with only two girders for a one story.
You mention accessory building as per local zoning. So this is not a stand alone cabin but something like a storage shed?
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paulz
Member
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# Posted: 7 May 2014 10:31am
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It's to be a cabin I'd like to live in while I build a house, then use it as a mother in law/storage facility.
What's your suggestion for 15 feet on two girders, size and spread? Thanks !
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MtnDon
Member
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# Posted: 7 May 2014 02:28pm
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2x10 #2 S-P-F can span up to 15' 5" when spaced 16" OC
That's with 40 psf LL and 10 psf DL
There is a helpful joist and rafter calculator on an AWC site
Choose species, grade, spacing, size, etc and it gives maximum span.
If it is to be used for storage determine what max loads (PSF) is needed. For lots of heavy stuff the load could be greater than 40 PSF. Also check the foundation loads.
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MtnDon
Member
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# Posted: 7 May 2014 02:57pm - Edited by: MtnDon
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I forgot to add... Zoning rules I am familiar with state the accessory building can be built after the main structure is permitted and built. Not before. Could be an exception to that but you should probably make sure of that is you have not already.
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paulz
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# Posted: 7 May 2014 03:10pm - Edited by: paulz
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I believe you are correct, and I will be going into this knowing that if I cannot obtain a permit I may have to move it or tear it down.
Thanks for the link to the AWC page, that is really helpful.
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Scott G
Member
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# Posted: 8 May 2014 10:41am
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I just contacted the local planning dept here in Kent County New Brunswick, Canada.
I simply asked; I am considering building a shed/baby barn and wondering what the codes are as far as maximum size for an accessory building without requiring a permit?"
The reply: "You will need a building permit for the shed even if it's 8 x 8."
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CabinBuilder
Admin
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# Posted: 8 May 2014 11:37am - Edited by: CabinBuilder
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As always, and noted before: building permits, requirements and size limitations vary from one local jurisdiction (township, county, etc.) to another - find out what is applicable in your case. 
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creeky
Member
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# Posted: 9 May 2014 09:53am
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Some areas will let you build an accessory building and permit it with the main building. Knowing it will need to be inspected eventually has certainly kept me on my toes.
Tho, in my area there is a certain amount of... As a man named Schultz said, "I see nuttink."
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