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Practical Considerations In Determining Timber Pile Depth Using The Sonic Echo Method, Ali F. Jwary
Practical Considerations In Determining Timber Pile Depth Using The Sonic Echo Method, Ali F. Jwary
Civil Engineering ETDs
The Federal Highway Administration indicates that about 85,000 bridges in the United States have no original contract documents with information about the type, depth, geometry and material of their foundations (FHWA, 2010). Furthermore, the National Bridge Inventory (NBI) provides information about 86,133 bridges nationwide that are rated as scour critical because of unknown foundation condition. In New Mexico, there are more than 281 bridges with unknown foundations, which are owned by the New Mexico Department of Transportation; 71 of these are timber bridges. These data indicate a serious problem that needs decisive action to assess the unknown bridge foundation characteristics …