In projects with shorter spans, SL-decks can be produced as double-long or tripple-long slabs. This is a very efficient solution ensuring a significantly faster and cheaper installation by reducing the number of crane lifts by 50-66%
E.g. in a project with spans of 6 meter, double-long SL-decks are delivered as 12-meter long elements spanning over 2 apartment units. The slab is supported by a load-bearing wall on the middle.
For double-long and tripple-long SL-decks, the lightweight concrete is omitted in the cross-section over the middle support member, which is instead casted with solid concrete. In that way, forces can pass through the slab.
The solid zone at the same time works as a traditional (prefabricated) joint and thereby prevents soundtransmission between apartment units.