BCI Prestressed Decking System BCI obtained the expertise of South African Precast Slab manufacturers, KBW Precast and DBL, to enable BCI to supply a proven Rib and Block slab system to our clients countrywide and beyond. Only the highest quality cement, sand, stone and prestressing wires are used. Manufacture is to SABS 0100 Part 2. BCI staff undertake daily quality controls on stressing and test concrete quality and strength. Delivery is done by BCI’s fleet of trucks from its factory in Windhoek | 
