"Geotechnical Laboratory (U.S.)" . . "Engineering design Data processing." . . "United States. Army. Corps of Engineers." . . "Excavation." . . "Structural engineering." . . "Tunnels Design and construction Data processing." . . "Joints (Geology)" . . . . . "Rational design of tunnel supports : an interactive graphics based analysis of the support requirements of excavations in jointed rock masses"@en . . . . "Rational design of tunnel supports an interactive graphics based analysis of the support requirements of excavations in jointed rock masses"@en . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "Rocks." . . "Engineering graphics." . .