Shelter Entranceways and Openings
STANFORD RESEARCH INST MENLO PARK CA MENLO PARK United States
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The objective of the investigation was to develop, test, and evaluate low cost shelter entranceways and openings for providing protection against the effects of nuclear weapons in the overpressure regions up to 20 psi. The approach adopted was 1 to identify as many factors as possible that influence, limit, or constrain the entranceway design 2 to attempt to identify the multitude of interacting situations and 3 to establish the situations most important to the design of entranceways for civil defense shelters. From an examination of the numerous influencing factors, parameters were selected as the basis for performing cost analyses for various entranceway configurations. Cost estimates were then prepared for 36 individual entranceways and 2 escape exits. From these data, it was possible to develop the total construction cost of shelter entranceways for loading capacities up to 1,000 personsmin for six general types of entranceways applicable for civil defense fallout and blast shelters. Since the loading capacity required for a specific entranceway system cannot be determined in a general manner beforehand as explained in the body of the report, the cost data are presented on the basis of the entranceway costperson for shelter capacities up to 10,000 persons for the six entranceway types and for entranceway loading capacities between 67 and 1,000 personsmin.