The SL-Deck combines the strength of reinforced concrete with the low weight of lightweight concrete which makes it possible to produce a strong lightweight construction that will handle heavy loads and long spans.
For a 10 meter span hollow-core slabs typically need to be 265 mm thick, where the SL-Deck can cope with the same load with only 215 mm. As can be seen below a Hollow-Core Slab is 23 % heavier than a SL-Deck.