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Use of prestressed concrete in floor slab production

• Fig. 1 SCD floor unit.

• Fig. 2 Strands.

• Fig. 3 Slipformer.

• Fig. 4 Concrete aspirator.

• Fig. 5 Saw.

• Fig. 6 VSD.

• Fig. 7 VMD.

• Fig. 8 EPD.

• Fig. 9 SCD.

• Fig. 10 VSD in the storage yard at Echo-Elbe.

• Fig. 11 Climate floor.

• Fig. 12 EPD 50.

• Fig. 13 Industrial building.

• Figs. 14 and 15 Residential building.

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• Dipl. Ing. (FH)
  Thomas Münzberg
  Bauingenieurwesen, 40 Jahre, Studium Bauingenieurwesen FH Erfurt,...

Reinforced-concrete floor slabs are regarded in Germany as the classic variety of floor constructions for new structures. All reinforced-concrete floor constructions have one thing in common: whether partly precast or in-situ concrete, at least 80% of the floors must be cast in place. In addition, complex support systems are required during the construction phase on site. Precast prestressed floor slabs from Echo-Elbe need no supports – all the way from installation on site until the building is taken into service.  

Precast prestressed floors slabs from Echo-Elbe consist of a lower and upper concrete layer connected to each other via the webs.

The prestressed strands and/or wires in sizes 5.7, 9.3 mm and 12.5 mm, are located in the lower webs. The structural design of the precast prestressed floors is completed in the in-plant engineering office in accordance with their spans and loads in cross-section, strand arrangement and floor thicknesses. Compared to conventional reinforced-concrete floors, precast prestressed floors are characterized by approx. 30% savings in weight, permitting materials savings in...