Zone 2 (Rowan) - Construction Progress - September 18, 2011 (View Gallery) D+16 Concreting of slab at Basement 1 completed. Concreting of columns from Basement 1 to Ground Flr, 100% completed. Concreting of retaining walls at Basement 1, 100% completed. D+17 Concreting of slab at Basement 1 completed. Concreting of retaining walls at Basement 1, 100% completed. E15 Concreting of slab at Basement 1 completed. Concreting of columns from Basement 1 to Ground Flr, 100% completed. Concreting of retaining walls at Basement 1, 98% completed.  E18 Concreting of slab at Basement 1 completed. Concreting of columns & core walls from Basement 1 to  Ground Flr,   95% completed. Concreting of retaining walls at Basement 1, 100% completed.