The following is a 11' diameter emergency shelter built from OSB used as an exterior sheathing, using ripped 2x4s as edge connectors. Total cost was less than $100.
The structure can be disassembled and stacked with a height of less than 18 inches, and a foot print of 4' x 4'.
The cut list:
http://mountaintruss.yolasite.com/resou ... r%2004.zip