Jon graduated with a Bachelor's degree in Geology and a Master of Science Degree in Engineering Science with a specialty in Geological Engineering from the University of California, Berkeley in 1980 and 1981, respectively. He is a licensed Geotechnical Engineer in California and was registered in over 13 states as a Professional Engineer. From 1981 to 1985 and 1989, he worked for Tudor Engineering Company, specializing in tunnel design. From 1985 to 1993, he worked at Earth Sciences Associates and Geomatrix Consultants in a similar capacity. In 1993, he joined Parsons Corporation in San Diego and from 2000 to 2019 he was the Technology Leader for Tunnels where he specialized in the planning, investigation, design, and construction of tunnels. He retired from Parsons in 2019 and presently works part-time as an independent geological engineering consultant. He was Vice-Animateur for the International Tunnelling Association Working Group 15, Tunnelling and Environment.
This talk will provide 1. an introduction to tunneling; 2. an introduction to liner design including geotechnical, and liner type considerations; and 3. some other design considerations of liners and cylinders including design innovations. The introduction to the tunneling topic will provide a brief overview of types of tunneling and ground supports. The liner design topic will provide some practical design considerations in terms of loading as well as implications for ground settlement. The third topic on other considerations will discuss some practical approaches to liner design including ring compression theory, buckling, special liner applications for internal pressure, innovations in liner materials for corrosion, and other practical uses of materials for other civil infrastructure besides tunnels.