Dr. Delmas is a full Professor and the Chair of Geotechnics in Cnam, Paris, France. After his PhD Thesis on geotextiles in LIRIGM, Grenoble, France, he began to work at Laboratoire central des Ponts et Chaussées France for 13 years. His main area of interest was Slope stabilities and Geosynthetics. He worked 15 years as Vice President in Polyfelt Group Geotechnics, Research & Development. He attended many commitees as Chairman and worked in the organising committees. He also has been the Chairman of the French Chapter of Geosynthetics (CFG) between the years 1996 - 1998. His current research area is Geotextiles and related products requirement.