Quick Answer
Cordwood cabins do not require special foundations, but a well-designed and properly constructed foundation is crucial to ensure the cabin's stability and longevity.
Foundation Design and Requirements
Cordwood masonry cabins can be built on a variety of foundations, including a full basement, crawl space, or a slab on grade. However, a key consideration is the cabin’s weight and the pressure exerted on the foundation by the cordwood walls, which can be substantial. To mitigate this, the foundation should be designed to distribute the weight evenly and provide adequate drainage.
Foundation Construction Techniques
A common foundation technique for cordwood cabins is a full basement with a footing depth of 12 inches below grade and a wall thickness of 8 inches. The wall should be constructed using a reinforced concrete stem wall, with a poured concrete slab for the floor. Another option is a crawl space foundation with a 6-inch thick slab and a 2-inch thick insulated floor joist system.
Considerations for Cordwood Masonry
When building a cordwood masonry cabin, it’s essential to ensure that the foundation is compatible with the cordwood construction method. The foundation should be designed to allow for the natural movement and settling of the cordwood walls, which can be affected by temperature and humidity changes. Additionally, the foundation should be able to withstand the weight of the cordwood walls, which can be up to 12 inches thick in some cases. To achieve this, a well-designed and well-constructed foundation is crucial, and it’s recommended to consult with a structural engineer or a experienced builder to ensure that the foundation meets the specific needs of the cordwood cabin.
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