Foundation question - Small Cabin Forum

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Small Cabin Forum / Cabin Construction / Foundation question


Author	Message
Oldgoat Member	# Posted: 14 Jun 2015 09:58 Reply Hello, I purchased a property that had a mobile home site already on it. I want to build a cabin on the that site. There are several poured concrete posts/pillars that are level with the ground. I would like to use deck blocks on the posts/pillars and place 4x6 or 6x6 beams on the deck blocks as my foundation, I will also add sono tubes to the existing pillars. The mobile home anchors are still there to help tie the cabin down. The sewer line is there and water line also. The electrical lines are underground and will come through the bottom of the floor up to the breaker box. Do you folks think my idea is sound? Thanks for your help.

Don_P Member	# Posted: 14 Jun 2015 10:53 Reply Piers have unknown horizontal strength, resistance to wind or seismic loads. Generally it is safer to assume they have no lateral strength. Part of why trailers go rolling across the plains in wind. The size of the beams (girders are beams that carry other beams, these beams carry the floor joists, which are beams, so these are girders) depends on the load and the span between supports. There are girder tables in chapter 5 of the codebook. They will be larger than 4x6 or 6x6.