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Hoover Dam Bypass Project

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High Tech Survey methods<br />

Crux oriented<br />

Borehole<br />

logging gets<br />

visual images of<br />

the inside of<br />

boreholes. You<br />

can see faults<br />

and cracks and<br />

this information<br />

is crucial for<br />

choosing<br />

foundation and<br />

skewback<br />

placement.<br />

In-Situ testing places<br />

a probe inside the<br />

borehole that<br />

measures deformation<br />

of the borehole as a<br />

function of load. This<br />

information is used to<br />

characterize rock<br />

strengths.

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