Federal Highways Administration- Geophysical Imaging Resource Site

Engineering Applications...

The engineering applications section of the website presents a wide range of transportation problems and the state-of-practice of geophysical imaging and nondestructive test (NDT) methods that can be used to solve the particular problem. The problems are divided into six groups, Bridge System Substructure, Bridge System Superstructure, Pavements, Roadway Subsidence, Subsurface Characterization, and Vibration Measurements.

Bridge System Substructure

• Overview

• Determining The Unknown Depth of Foundations

• Integrity Testing

• Rebar Quality And Bonding To Concrete Within Concrete Elements

• Bridge Foundation Scour

Bridge System Superstructure
• Overview
• Deck Stability Analysis
• QA/AC Of New Decks
• Baseline Condition Assessment
• Condition Evaluation Of Existing Decks

Pavements
• Overview
• QA/AC Of New Pavements
• Condition Evaluation Of Existing Pavement
• Transportation/Geotechnical Methods

Roadway Subsidence

• Overview

• Mapping Voids, Sinkholes, Abandoned Mines, And Other Cavities

• Roadbed Clay Problems

Subsurface Characterization

• Subsurface Geophysical Mapping And Imaging

• Geophysical Methods To Determine Physical Properties

• Geophysical Methods To Image Buried Manmade Features

Vibration Measurements

• Traffic Vibrations

• Blasting Vibrations

• Construction Vibrations

• Vibration Recommendations