[Cob] More Foundation Thoughts

[Peters Michael]

HI Everyone,

I found this reference on www.greenhomebuilding.com. It was a question and answer on gravel/rock filled bag foundations and seismic considerations, with the answerer being Michael G. Smith of Cob Cottage Co. fame. I was not so interested in the seismic considerations, but Michael Smith mentioned the following as part of his answer: 
   
  "It may be that a cement-stabilized soil mix in the above-ground bags would be more earthquake resistant than rock-filled bags. However, the rock-filled bags have the advantage of not wicking water vertically through capillary action. I would recommend at least 1 course of rock-filled bags above grade, then you could switch to soil-cement."
   
  The implication being that soil-cement bags DO wick water through capillary action? Thoughts/experiences from anyone?
   
  Michael
   

       
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