Montana approves use of 3D-printing to build walls
Montana has become the first state to approve broad regulatory use of 3D-printing for walls instead of concrete masonry units or cored concrete blocks, a potentially cheaper way to build homes. Single-family homes planned by Billings contractor Tim Stark won approval after he filed documents and testing reports developed by Florida’s Apis Cor, a construction technology company, the company said in a statement. Apis says it’s the only such company to have designed 3D-printed walls
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