File:NNSA-NSO-545.jpg

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Description PLUMBBOB - 1957 - NEVADA TEST SITE -- Dome structure, third in line, was located to stand up to side-on overpressure of about 20 pounds per square inch. Designed by American Machine and Foundry Company, the structure was tested by a recent atomic test. AM&F proposes the steel-reinforced concrete dome as basic design for a national shelter program. These structures are 50 feet in diameter, but could be expanded to 150 feet diameter, or more, to provide mass shelter. Construction of the six-inch constant thickness shell is relatively simple. Mounds of earth of the required size are formed and the surface hardened by the shotcrete method to form the inside surface. The foundation is installed and a webbing of reinforcing rods is formed over the shell. This surface then is covered with a constant six-inch thickness of concrete. After the concrete has hardened, the earth is removed, leaving shelter space under the dome. A temporary steel hatch covered the entrance (to the rear, out of view), but a prototype full-scale door for a dome shelter of about 150-feet diameter was tested independently by AM&F. A final test report on the three structures will be prepared for CETG and FCDA by AM&F.
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This image is available from the National Nuclear Security Administration Nevada Site Office Photo Library under number PLU-57-165.

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Author National Nuclear Security Administration / Nevada Site Office
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Public domain This image is a work of a United States Department of Energy (or predecessor organization) employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, the image is in the public domain.

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current00:47, 3 September 2012Thumbnail for version as of 00:47, 3 September 20121,435 × 1,153 (274 KB)Bomazi (talk | contribs){{Information |Description=PLUMBBOB - 1957 - NEVADA TEST SITE -- Dome structure, third in line, was located to stand up to side-on overpressure of about 20 pounds per square inch. Designed by American Machine and Foundry Company, the structure was t...

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