Geotechnical Cartographic Synthesis of Bejaia City,North East of Algeria

Geotechnics has a significant contribution in the construction engineering and natural risks, by providing for many useful data to direct the regional planning and prevent catastrophes. The geotechnical cartography became imperative to satisfy the intensive requirement of data concerning the soil and the basement, which initiated the urban development, often anarchistic. Indeed the cartography in geotechnics is a very complex task, because information concerning the soil and the basement are diverse. Due to its coastal and touristic position, Bejaia is one of the promising cities of Algeria. The site, on which the city is erected, is as an amphitheater where the sea is the scene. Indeed, Bejaia is located on a site surrounded by mountains on the three sides, north-south -west and it faces the sea on the east, its extension requires the use of lands with broken topography, and lead to appearance of new urban zones. These were built without consulting the experts in the field of the civil engineering, particularly geotechnics. This article presents the geotechnical cartography of Bejaia city; which shows the preliminary results of the zone of study, based on existing geotechnical, geological and topographic data.