“Experimental Modeling of Deformation Induced Anisotropy in Soils,” Lecture Colorado Section ASCE, Geotechnical Division, Denver, April 20, 1983.
“The Strength and Stress-Strain Response Behavior of Steel-Fiber Reinforced Concrete under Combined Tension-Compression Loading,” Engineering Mechanics Division, ASCE Specialty Conference, Purdue University, West Lafayette, Indiana, May 23, 1983.
“Finite Element Modeling of Concrete Failure in Shear,” Engineering Mechanics Division, ASCE Specialty Conference, Purdue University, West Lafayette, Indiana, May 25, 1983.
“Dynamic Behavior of Rock Joints,” with David R. Gillette and Hon-Yim Ko, 24th U.S. Symposium on Rock Mechanics, Texas A&M University, College Station, Texas, June 20, 1983.
“Experimental and Analytical Methods in Geotechnical Engineering,” Det Norski Veritas, Hovik, Norway, July 11, 1983.
“Behaviour of Concrete under Multiaxial States of Stress,” Lecture Series, 10 hrs., Central Soil and Materials Research Station and Central Water Commission, New Delhi, India, July 23-July 30, 1983.
“Recent Advances in Geotechnical Practice,” Central Water Commission, New Delhi, India, August 1, 1983.
“Limited Deformation Problems with Static Loading: Laboratory Experimentalist’s Response,” Workshop on Experimental Research in Soil Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, August 22, 1983.
“Constitutive Properties of Steel Fiber Reinforced Concrete in Multiaxial Compression and Combined Tension and Compression,” RILEM-CEB Int. Conf. on Concrete under Multiaxial Conditions, Toulouse, France, May 23, 1984.
“Centrifugal and Analytical Modeling of Excavations in Sand,” ASCE Engineering Mechanics Division Specialty Conference, University of Wyoming, Laramie, Wyoming, August 1, 1984.
“Continuous Fracture Computations and Strain Localization in Cementitious Solids Subjected to Tension and Shear,” Int. Congress of Theoretical and Applied Mechanics, Technical University of Denmark, Lyngby, Denmark, August 24, 1984.
“Superconducting Super Collider High Energy Physics Facility: Civil Engineering Task,” Briefing lecture, Denver, Colorado, Sept. 21, 1984.
“Properties of Non-associated Plastic Flow Constitutive Models for Cohesionless particulate Materials”, Invited Lecture, Dept. Mechanical Engineering, University of Colorado, Boulder, February, 1984.
“Experimental and Analytical Constitutive Modeling of Soils,” U.S. Navy Civil Eng. Lab., Fac. Com., Port Hueneme, California, Nov. 5, 1984.
“Superconducting Super Collider (SSC) Civil Engineering Activities,” U.S. Bureau of Reclamation, Denver, Colorado, Nov. 14, 1984.