The advantage of pre-stressed concrete hollow core floors over other types of floor structures is their efficient use of materials.
Pre-stressed concrete hollow core slabs require a high grade of concrete and of steel.
Therefore the same load ratings can be achieved with use of less materials than in cast-in-situ concrete slabs. In comparison to the cast-in-situ construction method 45% of concrete can be saved.
Pre-stressing reduces the use of steel by about 30%. This equates to up to 14.4 tons less concrete and 275 kg less steel for the average size of dwelling - a decisive step towards sustainability.
Precast pre-stressed hollow core floors offer exceptional efficiency to the user. Their slenderness and long span capacities allow the available building space to be exploited to the best advantage.
With precast pre-stressed hollow core floors long spans without supports are possible.