Accession Number : AD0694030
Title : MOVABLE SHIELD FOR FALLOUT PROTECTION OF ABOVE-GROUND STRUCTURES: DURABILITY STUDY.
Descriptive Note : Final rept. Feb 64-Jun 69,
Corporate Author : NAVAL CIVIL ENGINEERING LAB PORT HUENEME CALIF
Personal Author(s) : Scott,A. L.
Report Date : SEP 1969
Pagination or Media Count : 13
Abstract : A movable protective shield, consisting of a number of heavy vertical concrete louvers, was evaluated to determine its operation, weather resistance, and maintenance requirements. A test stand consisting of three panels, or louvers, was erected and exposed to wind, sun, sand, rain, and salt air for 4-1/2 years. Periodic measurements were made of the torque required to turn the panels after periods of immobility of up to 1 year. No increase was noted in the torque required to turn the panels during the test periods. On disassembly, the bearings were found to be in excellent condition. (Author)
Descriptors : (*FALLOUT, *SHIELDING), (*BUILDINGS, SHIELDING), WALLS, CONCRETE, OPERATION, METEOROLOGICAL PHENOMENA, MAINTENANCE, ASSEMBLY, BEARINGS, PHYSICAL PROPERTIES
Subject Categories : Structural Engineering and Building Technology
Distribution Statement : APPROVED FOR PUBLIC RELEASE