CCL supplied 150,000m2 of Post-Tensioned (PT) Slabs to La Marina des Portes Océanes, Ilots A2 & A4 in Casablanca, Morocco. Work undertaken includes the design, supply and the supervision of installation of its XF10 and XF20 flat slab systems.
Previously, CCL supplied and installed a solution using its XF10 and XF20 flat slab systems in the first two Ilots A3 and A5 of the project, an area of approximately 65,000m2. The system was so successful that PT slabs were specified, for the first time in Morocco, for the subsequent Ilots of La Marina project.
The original design featured dropped beams mainly in the upper basement slabs which, because of the proximity of the sea shore and the high underground water level, had to be removed. CCL’s alternative design included flat slabs in the basements which removed the drop beams, reduced the basement height and minimised excavation. The requirement for a high level of concrete durability was also met by the post-tensioned concrete slabs, which are more resistant to cracking than both normal reinforced concrete and slabs using precast mounted slab elements.
CCL’s flat slab system also resulted in a reduction in the amount of reinforcement and concrete used, which produced cost savings. The “easy to install” flat shutters reduced the amount of material to be lifted and installed, and the immediate redeployment of shuttering after the prestressing of the slabs, contributed to an accelerated construction schedule, with a cycle of seven to ten days per pour. The reduced material quantities also decreased the self-weight of the building, which in turn led to a decrease in column section and in foundations.