Charles Dowding, Professor and coordinator of Geotechnical Engineering in the Department of Civil and Environmental Engineering, is developing and commercializing Autonomous Crack Measurement (ACM) devices and systems. ACM systems autonomously record changes in building cracks from construction and traffic vibrations for comparison with changes produced by long term environmental effects such as temperature and humidity. He is also completing commercialization of Time Domain Reflectometry (TDR) devices. TDR is radar in a coaxial cable. Signals are pulsed along a cable grouted into rock or soil. Locations and reflections of these pulses describe movements within the earth such as sink holes, between foundations and underlying rocks and soils such as bridge piers and abutments, and of large complicated structures.