Date: May 2017- September 2017


Tehran Engineering and Technical Consulting Organization (TETCO) has recently purposed to utilize and take benefit of Japanese road cavity investigation technic in Tehran City and plan to implement the road cavity inspection using Japanese Consultant. Thus, all survey and consultancy services, investigation and inspection of the road cavity by one leading- edge GPR device and two handy GPR devices and also related coring and borehole equipment is assigned to the Japanese Company called, CTI Engineering International Co. as a Consultant for 200 kilometers Tehran highways and street networks with an average width of 20 meters under the supervision of RCUWM. Worth noting that, Japan has been dealing with similar kind of issues for a long time and improving the methodology for the road cavity inspection with GPR devices.