Presentation Topic: Geophysical Methods for Void Detection and Assessing Bedrock Conditions
Abstract: Detecting voids in the subsurface and accurately assessing bedrock conditions can be especially challenging, but with the availability of numerous geophysical methods to apply to different scenarios, the ability to detect and characterize voids and bedrock conditions is ever increasing. Different geophysical methods are capable of detecting subsurface voids and the bedrock surface at differing depth limits, levels or resolution, and with different levels of confidence. This presentation will cover the usage of electrical resistivity (ER) imaging, ground penetrating radar (GPR), multi-channel analysis of surface waves (MASW), and seismic refraction and will provide numerous examples of the successful identification of voids and characterization of bedrock conditions in challenging settings.
Presenters: Joel Daniel, PG and Chris Printz, PG
Speaker Bios: Chris has been with Draper Aden Associates for 5 years and has 26 years specializing in geophysical evaluations. Joel has 12 years with Draper Aden Associates and has 16 years specializing in geophysical evaluations. Both have extensive experience in the Mid-Atlantic region, with experience as far west as the Nebraska & Alaska, and some oversea projects. Both are highly experience with Karst topography issues.
When: Thursday, November 18th, 2021 at 12:00 PM
Registration: Registration for this event is closed.
A free lunch will be provided to 10 random ASCE members who sign up prior to Nov 12!