1. Tipi manufacturers can be found in ads in Native American - oriented magazines, newspapers, and mail-order catalogs.
4. Geodesic dome manufacturers put ads in housing-oriented magazines, and may have websites.
5. Log home companies can be located through magazines on log homes; ask manufacturer about connecting rods, and what's needed to secure roofs.
6. "Pioneering Construction Ideas..." in Architectural Forum , January 1950, pp. 80-81, about rowlock brickwork with reinforced concrete filling. Recent research indicates more closely-spaced rebar is advisable.
9. FEMA 320 "Taking Shelter From the Storm: Building a Safe Room Inside Your House" (888) 565-3896 http://www.fema.gov/pdf/fima/fema320.pdf
FEMA 342 "Building Performance Assessment Report: Oklahoma and Kansas Tornadoes of May 3, 1999 - Observations, Recommendations, and Technical Guidance" (800) 480-2520 http://www.fema.gov/mit/bpat/bpat012.htm
10. Domical earth lodges were built (using log inner frame and shell) by several indigenous nations including Pawnee, Mandan, Hidatsa, and Arikara; and has as much as 3' of soil covering the exterior. A car-drop test will verify the specifications of he reinforced concrete inner shell needed for a modernized version of the earth lodge.
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