Planning & Design
Jacobs Associates provides a host of design and consulting services for all phases of underground projects, from feasibility studies to innovative design and engineering support through construction. We work directly for government agencies and private sector owners, and as a specialty subconsultant to other engineering firms. Our leading-edge designs consider construction methods ranging from open-beam tunnel boring machines (TBMs) for hard rock tunnels, shielded rock machines, earth pressure balance and slurry machines for soft ground, and New Austrian Tunneling Method (NATM) techniques. We are recognized as one of the world’s acknowledged experts in the design of tunnels, deep shafts, portal and slope stability, building protection measures, and grouting for rock and soft ground tunnels.













































