The bedrock and surficial geologic map of the Satan Butte and Greasewood 7.5' quadrangles was completed in a cooperative effort of the U.S. Geological Survey (USGS) and the Navajo Nation to provide regional geologic information for management and planning ...

<p>The deformation of retained soil is of importance for the design of a deep excavation in soft soil. The influence of bedrock underlying the soils on the behavior of the retaining wall needs proper evaluation. This contribution shows a case study on deep ...

Since 1857 more than 600 rock falls, rock slides, debris slides, and debris flows have been documented in Yosemite National Park, with rock falls in Yosemite Valley representing the majority of the events.We investigatedthe geologic and hydrologic factors contributing ...

Damaging compressive stresses can develop at the pile toe when piles are driven to bedrock or in bouldery conditions. High-strain testing methods using the Pile Driving Analyzer (PDA) have been used successfully to detect pile damage along the pile.

Extraction for visual inspection showed that the failed piles were bent and had deformed pile shoes. In areas of steeply sloping bedrock and for replacement piles, an alternative shoe, the Scanpile Herkules rock shoe, was employed. This pile shoe proved to ...