Showing posts with label rock foundation. Show all posts
Showing posts with label rock foundation. Show all posts

Saturday, September 8, 2012

foundation

      I thought I would take a moment and write a little about our foundation. Many tiny houses are built on trailers thus reducing the foundation issue and in most cases eliminating the need to have the structure inspected by a local code enforcer. In our location there are no building codes. We have a health inspector that would come out to inspect a septic or field lines. We also have an electrical inspector that would come out if we were connecting to the grid.
     Our little house is built on one course of cinder block sitting upon two slabs of four inch cement that is laid over gravel filled mountain stone. Half of the foundation is laid over undisturbed sandy loam and sandstone. The other half was about a foot lower and so we compacted soil and small rocks to bring it up level. All of the rock and mountain stone was pulled out of a low exposed area about fifty feet from the house. Inside the foundation we poured a thin coat of concrete in most of the area to act as a barrier. We will still lay a vapor barrier but felt the extra thermal mass of cement would be nice under the house. All of the block is cement filled and we placed threaded rods into some so as to connect to the wood of the house. Inside the block we placed ridged foam in a hope of insulating the foundation and holding temperature inside better.
     As you can see in the photos we had to shim the bottom boards of our house to make it all level. This is mostly due to my lack of experience with pouring a foundation and making it level. We will  have piers about eight feet out from the house on the East to allow for the deck beams to rest level.

Friday, August 31, 2012

site prep

       This is a retrospective photo. Here I am laying out the house site. We drover rebar into the ground at key points so as to allow us to visualize the size and shape of the house. This picture was taken mid July. We began foundation work shortly after this picture was taken.
      The house foundation now sits to about where I am kneeling. You can see the thick forrest in the background and the field to the South. We have since thinned the forest and trimmed the undergrowth to about seven foot. This Winter we will plant hazelnuts in the protection of that pine forest.
To the left you can see some of the foundation work in progress. We gathered mountain stone from near the house site and placed large rocks in a trench. Some of the rocks were excessively large , we laid these in the corners. in addition to the mountain rock we also took gravel from the old logging trail and filled the foundation with crushed stone in fill.
Following the rock and gravel we poured 4 inches of concrete base layer all around the perimeter. once this was set and cured we poured an additional cap of concrete over and around the first layer. The layering created a wide, firm and well established foundation on which we laid mortar and one corse of eight inch block.

Here is another shot of me working on the forms for the base layer of concrete. The photo shows the East side and the North side of the surrounding area. The East side drops off into the lower meadow and wetland and the North gives way to more dense woods. We cleared 3/4 of the East trees in order to create a healthy managed forest enviroment. We kept the maples, sassafras, a few interesting pine trees and sweet gums. The thinned forest will allow these trees to thrive and become stronger well established specimens. It also allows for more light in the house and a better view.