
The project, located on the site of the former Anfa airport (Casablanca), consists of a 25-floor tower with six underground parking levels (down to 20 m deep). The geology consists of loose formations some ten metres thick, underlain by a schistsubstratum. The phreatic level is expected at 8 m
below the groundlevel. The temporary retaining walls consist of:
– a soil-nailed wall for the upper part, its stability checked with Talren calculations,
– a wall with rock bolts for the lower part, its stability checked with block calculations.