There seems to be a push by a good number of PC veterans to give this product a more main-stream traction in regards to getting it approved with local building inspectors. This website has a lot of information on it:

Papercreter's Building Codes » only problem: it appears a bit stale at the moment. Last entry was 7/31/2007.
Make The Building Code Work For Cob » Building code struggle by a cob person.

Unless otherwise stated, the content of this page is licensed under Creative Commons Attribution-ShareAlike 3.0 License