ABSTRACT
The geological sequence and some main aspects of the stratigraphic subdivision of the Rupelian clay is discussed. It allows a subdivision into three main geotechnical units. Particular features of this clay deserve some special attention with regard to foundation engineering. They are the clay fissures, the clay diapirs and the septaria. The past burial depth and the inherited preconsolidation pressure may generate irregularities in the stresses field and the fissure pattern affecting the parameters commonly used for geotechnical design.
