I am having similar thoughts. Building a pier and beam in Texas and have convinced myself rammed earth tire walls(as beams) are the way to avoid the concrete usage. I kicked around the idea of piers from stacked tires but a couple of engineers have steered me away from that. I would love to hear if you find any other info and or an engineer firm that would be willing to sign off on a design. Either way I am going for it, breaking ground in the 27th!
