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