Best Practices for Road Weather Management On average, there are over 6,301,000 vehicle crashes each year, and 24 percent are weather-related, resulting in 7,130 fatalities and 629,000 injuries. In spite of these statistics, there is a perception that transportation managers can do little about weather. However, three types of mitigation measures may be employed in…
Groundwater Investigations This course presents the general state of the practice of groundwater investigations and focuses on the scope and specific elements of typical geotechnical investigation programs for design and construction of highways and related transportation facilities. It presents the latest methodologies in the planning, execution, and interpretation of the various exploratory investigation methods, and…
Subsurface Drilling and Sampling This course provides an overview of the equipment and procedures commonly used for the drilling and sampling of soil and rock as part of a geotechnical site investigation. The methods addressed in this course are used to retrieve soil samples and rock cores for visual examination and laboratory testing. The planning,…
Seismic Considerations for Road Tunnels Tunnels, in general, have performed better during earthquakes than have above ground structures such as bridges and buildings. Adequate design and construction of seismic resistant tunnel structures, however, should never be overlooked, as moderate to major damage has been experienced by many tunnels during earthquakes. This course provides general procedures…
Tunneling in Difficult Ground Engineers like to work with materials having defined characteristics that do not change from one location or application to another. However, in many cases special approaches or arrangements must be made to safely and efficiently drive and stabilize the tunnel as it passes through this “Difficult Ground”. The factors that make…
Geotechnical and Structural Instrumentation for Road Tunnels The primary purpose of geotechnical and structural instrumentation is to monitor the performance of the underground construction process in order to avoid or mitigate problems. Advanced and refined types of instrumentation abound, and electronics coupled with computers have made remote monitoring, even from half a world away, practically…