Accession Number:

ADA995263

Title:

OPERATION HARDTACK. Project 1.9. Loading on Buried Simulated Structures in High-Overpressure Regions.

Descriptive Note:

Rept. for Apr-Oct 58,

Corporate Author:

KAMAN TEMPO SANTA BARBARA CA

Personal Author(s):

• Bultmann,E. H.
• McDonough,G. F.
• Sinnamon,G. K.

Report Date:

1984-10-31

Pagination or Media Count:

60.0

Abstract:

The objective of this project was to study some of the factors affecting the transmission of air-blast-induced pressure through soil and the loading produced on buried structures by such pressures in the high-pressure region approximately 250 psi. Factors studied were 1 the attenuation of pressure in a sand deposit when the water table is a few feet below the ground surface 2 the effect of duration of positive phase of blast on the pressure transmitted through such a soil 3 the effect of structure flexibility on the pressure acting on structures buried in such a soil and 4 the relationship between horizontal and vertical pressures in such a soil. The project employed 43 devices, each a rigid cylinder having one rigid end and one deformable-diaphragm end. The devices were buried at depths ranging from 0 to 20 feet at each of two locations at the Eniwetok Proving Ground. The locations were chosen to give a predicted ground surface overpressure of about 250 psi from each of two shots, Cactus and Koa. keywords NTPRNuclear Test personnel Review.

Descriptors:

• *BLAST LOADS
• *NUCLEAR EXPLOSION TESTING
• *UNDERGROUND STRUCTURES
• ENEWETOK ATOLL
• PRESSURE MEASUREMENT

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE