The two most common ways to install a suspended concrete slab are: the conventional cast-in-situ, and the Rib and Block slab system.
With the conventional system, every component is assembled on-site, the entire slab must be shuttered, and all of the concrete must be poured on-site. The advantage of this system is that larger spans of the concrete slab can go unsupported. However, this comes at a significantly higher cost when compared to alternative suspended slab systems.
The Rib and Block system has the lintels and blocks precast and delivered to the site. This makes the installation process simpler, and quicker than conventional methods. And since it uses less concrete, this system can also save you up to 30% in total costs compared to cast-in-situ.