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habbi_88
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# Posted: 29 May 2012 11:12am
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I am building a cabin on a few acres of granite. The cabin is 16x14 and I am using 4 posts fixed to saddles that are in 1foot square footings pinned to the granite. Beams are white pine trees that I cut down, 12- 7 inch diameter. Two questions, are the footings large
Enough? And are the beams big enough? Everything feels solid now, walls are up but will no go any further. Also, footings are 6
Inches thick.
Thanks, nick
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OwenChristensen
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# Posted: 30 May 2012 02:39pm
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I'd say them posts are big enough, but I don't think you have enough support for the beams.
Owen
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habbi_88
Member
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# Posted: 30 May 2012 03:22pm
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That's what I was thinking. I will put two more posts that will decrease the span of the beams to 8 feet. Do you think 1 x1 x6 is big
Enough footing?
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OwenChristensen
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# Posted: 31 May 2012 12:11am
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I'm not quite sure what you mean. It's seems that the bed rock is your footing. You can't get better than that. If your post is 12'' x 12'' and has rod in it that should be fine. What the 6?
Owen
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habbi_88
Member
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# Posted: 31 May 2012 11:28am
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A little bit of confusion. I drilled into the bedrock, put in rebar and poured a 12x12x6 inch pad where the posts sit. The beams span 15ft. I used 10 inch diameter trees as posts.
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OwenChristensen
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# Posted: 31 May 2012 04:25pm
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Oh yeah those pads and posts are fine. Watch the span. 15' might be pushing it.
Owen
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tex
Member
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# Posted: 31 May 2012 09:42pm - Edited by: tex
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We for our 12' x 16' cabin, we installed 9 supports. Every 8' on three support beams.
We are not pinning them, supports are dug in, gravel filled, patio slabs, and additional smaller slabs and deck supports, and using 2" x 8" - 16' PT boards - (3) supports.
You may wish to put in at least 2 more supports at the 8' of your 16' beam.
May stop a floor bounce.. and better to go a little more now, than less.
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habbi_88
Member
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# Posted: 1 Jun 2012 11:28am
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Thanks for input..I will out in two more posts to break up the 15'
Nick
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