Geofoam under foundations
Geofoam under foundations
(OP)
I've heard of using geofoam under roadways and embankments, but can they be used under building foundations?
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Geofoam under foundations
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RE: Geofoam under foundations
RE: Geofoam under foundations
RE: Geofoam under foundations
RE: Geofoam under foundations
I have used the stuff under the basement floors of two houses that I have had built and no problems. Makes for a comfortable basement.
If you look at the crushing strength of the stuff and then go well below that pressure, it would seem it would work, but why be the first to do it?
I did that very thing for a cellar door area way wall foundations for my present house. So far so good, but we will see if the winter changes things. The purpose was to avoid going below that mystical thing called "frost depth".
RE: Geofoam under foundations
RE: Geofoam under foundations
I would have the same question...filling with this material, even though it might have a higher modulus than typical soil, won't help if you have poor soil conditions below....though it will likely reduce the loading on the poor soils if used to replace some of the existing overburden.
I would look at overexcavating the site to remove the soils or consider deep foundations.
RE: Geofoam under foundations
RE: Geofoam under foundations
RE: Geofoam under foundations
Moe: We are considering doing what you described under a process building and some tanks for a small water treatment plant on a site with deep compressible clays. I am concerned about contact settlement due to imperfect bedding of the geofoam on the soil and between layers of the foam. Did you do anything special to address this issue?
RE: Geofoam under foundations