Results of an in situ investigation of the shear moduli at the Mixed Company site near Grand Junction, Colorado, are presented. Shear moduli were determined from crosshole S-wave velocity and Menard pressuremeter tests in the sandstones of the Kayenta and Wingate Formations at the site. In addition to the data from these tests, rock quality designation data and electrical, caliper, neutron, and gamma logs for three borings at the site are presented. (Author).

This report documents the development of a closed form solution to the idealized borehole pressuremeter problem in linear elastic transverse isotropic media. The borehole was assumed to be infinitely long and pressurized by a static pressure. The mathematical equations for the distribution of stresses and displacements anywhere around the borehole are derived and incorporated into the computer program BOREHOLE. The solution is relevant to the field determination of constitutive properties for use in ground shock calculations. It shows that, in theory, the pressure versus borehole volume change relations from a series of borehole pressuremeter tests inclined at different angles can be used to deduce an appropriate set of linear elastic transverse-isotropic constitutive properties for a given medium and provide an index to the degree of anisotropy of the material. (Author).