Wood Slab on Grade Detail
Inspired by Mike Guertin here: (https://www.greenbuildingadvisor.com/article/planning-for-a-permanent-wood-foundation)
and Joe Lstiburek here: (https://www.buildingscience.com/documents/building-science-insights/bsi-020-wood-foundations-picasso-does-foundations)
I want to build a slab-on-grade foundation, with the minimum amount of concrete and grading possible. I am in a hot and arid Southern California climate zone 3B, in a rural area with well draining sandy soil. We don’t use slab insulation in our area, and extreme water management is often overkill here. I decided to design a perimeter concrete grade beam, poured in a simple trench, combined with a pressure treated floating wooden “slab”.
Is this a realistic option for a small 2-story home? Feedback welcome
I have a 3D solidworks drawing with annotations attached: https://drive.google.com/file/d/14iQaE-oKH7MS8dg_iSmP-Ag2V5dz5ux8/view?usp=sharing
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