The Project in Bouchrieh consists of a 14 storey concrete Tower with 1 basement. The lot is surrounded by residential buildings on 2 sides and roads on the others. The first soil layer (about 7.5m) consists of saturated Sand & silty sand material underlain by a deep layer of gray clay (~ 14m). This stratigraphy represents liquefaction hazard should shallow foundations be used. Int’l IGM proposed and constructed a pile system to replace the solution of a very thick mat by a CPRF System (Combined Pile-Raft Foundation). The piles were 60cm in diameter embedded deeply into the clay layer.