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Country Discussion Topics
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Pole Barn Advice in Sand Soil/Beach Area?
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GW    Posted 09-08-2004 at 23:01:30       [Reply]  [No Email]
I'm debating whether I should build a pole barn or a pour a footing/poured solid wall and frame the garage. The problem is my county requires the poles to be embedded 8' down...something out of my range. Its a beach area in NC. 130 mph wind zone. If I go with a poured footing/solid wall will be very expensive...10"x24"W footing, with a 8"w x 36"h formed and poured wall. The garage size is 28' x 40'. Code requires 2-#5 rebar in footing and verticle dowel embedded from footing up wall face every 72", terminating in 1/2" bolt anchor for bottom plate(s). The other consideration with a pole barn is...if I pour a slab within the boundries of the pole skirting it may get undermined by tide. During hurricanes the area floods...sometimes taking any loose soil with the outgoing tide. I think a pole barn would be the overall stronger and cheaper solution but feel that a deep footing foundation of concrete and poured walls would be better for the tide problem. I'm planning on filling the lot 2' from the original grade either most situations this would alleviate the tide problem form reaching the slab, however it may still undermine the grade enough to get to the slab in the pole barn situation. Anyone out there that can offer advice?

Willy-N    Posted 09-09-2004 at 07:16:44       [Reply]  [No Email]
My Pole Barn Building Poles are set at 4 ft with concrete under and the holes were dug all most 3 ft accross and filled to 6 inches of concrete from the top for up lift reasons along with giving them strength. I also have 12- 8X8s 70% Retention Pressure Treated to suport the 48 X 60 Building. I have hard soil and it has a lot of rock in it too. Going 8 ft for your problem would be cheaper than a Concrete Footing another 4 ft on the hole wold not be that much in cost compaired to concrete costs. It would also make a strong suport for wind and wash out reasons. Mark H.

Steve from TN    Posted 09-09-2004 at 04:42:50       [Reply]  [No Email]
Hi GW, Someone asked a similiar question on another board a few days ago about pole barns. They were asking for an alternative to digging the holes with a posthole digger. Someone answered with a detailed plan for digging the holes using water. This person said to make a wand to fasten your water hose(with nozzle) to. Set your post up in the verticle position and have it secured. Use the water to undermine the post. As you wash the sand out, the post will be lowered into the hole. I think they had a nozzle that shot water out side ways under the post. This person said that this method is quite popular in sandy areas. It sounded good to me. You might do a search on Yesterday's Tractors on the Tool board or the Tractor Talk board. I believe this information was on one of those two boards. I hope this helps.

paul    Posted 09-09-2004 at 06:02:26       [Reply]  [Send Email]
if your worried about it being undermined(pole barn) you can pour a retaining wall about four feet off the tide side to keep that from happening additional cost but well worth the piece of mind

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