David participated in an inspection of the El Volcan tunnel of the Alto Maipo project in Chile

Advice on ground improvement for tower foundations.

The ElectraNet transmission network had an unusual situation where ground improvement was required to increase the soil strength/density of some historic backfill for some gravity pad transmission line footings

Usually the pad would be excavated with concrete. However, at these sites there were some cultural and environmental access constraints and the client wanted to limit visible disturbance.

Site is located about 40km west of Mannum, South Australia

Ground conditions were sandy clay and silty sand so permeation grouting was not feasible. A soil mixing solution was proposed.

David has been nominated as a finalist in the International Research Awards on Mechanics of Functional Materials and Structures for Excellence in Research

David attended the 6th Mission of the Lesotho Highlands Phase II Engineering Panel of Experts (EPoE) as the Tunnelling and Grouting Expert in July 2025

The dam is now underway and the first TBM is excavating the access adit with the 2nd TBM just arriving on site.

The Tanahu Hydropower Project in Nepal includes two 11.4m diameter diversion tunnels, a 1.4km 7m diameter headrace tunnel, a 60m high coffer dam, a 140m high mass concrete dam, an underground power house and a 33km transmission line.

The project consist of a 140MW hydropower plant with significant water storage facilities.