Dynamic Foundation Investigation Roi-Namur, Kwajalein Atoll Marshall Islands,
Abstract
Refraction seismic and vibration tests performed at the site of the proposed ALTAIR facility indicate the presence of two velocity zones. The upper zone showed an average compression wave velocity of about 1050 fps, a shear wave velocity of 575 fps, and a Poisson's ratio of 0.29. The water table was at the 6-ft depth. Below the water table, to a depth of 24 ft, the average compression wave velocity, shear wave velocity, and Poisson's ratio were about 4800 fps, 725 fps, and 0.49, respectively. Shear moduli increased normally for nonlayered materials. Seismic and vibration tests performed at the site of a proposed 48-in.-telescope foundation also indicated two velocity zones. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1966
- Accession Number
- AD0737771
Entities
People
- D. R. Casagrande
- R. F. Ballard Jr.