The DZ type floor is an example of a "strong" block-rib floor made of concrete blocks. Concrete blocks are heavier, have poorer sound insulation, but they allow you to make a more durable ceiling, of a greater span. This type of ceiling is used in residential construction.
The construction of the DZ floor consists of prefabricated reinforced concrete beams with a height 20 cm (plus a protruding stirrup of reinforcement), laid in axial spacing co 60 cm, between which concrete hollow bricks are placed and the upper concrete slab poured on the construction site (B-20 class concrete) of thickness 3 cm nad pustakami. The axial spacing of the beams in all types of the DZ ceiling is: 60 cm. If the partition walls are made of brick, they are placed parallel to the ceiling beams, that below them – to strengthen the structure – double stacked beams are recommended.