The idea
The two-axis load-bearing reinforced concrete flat ceiling is simple, safe and economical. The flat underside without joists or mushroom heads makes it easier to install the building services. Ceiling overhangs and any bearings on columns and walls are possible.
The BEEPLATE hollow core ceiling now enables this successful solution to also be used for ceiling panels with a large span.
Honeycomb arrangement is crucial
The BEEPLATE hollow-core ceiling is a solid panel with hollow bodies. The hollow bodies are only arranged in undisturbed areas of the ceiling. The ceiling is solid in the area of supports, recesses or built-in parts. In the remaining area, the hollow bodies are installed in a honeycomb arrangement. As a result, the BEEPLATE has a robust load-bearing behavior, the webs between the hollow bodies have sufficient torsional rigidity and load redistribution in the transverse direction is possible.
Despite the reduced bending stiffness in the hollow body area, dimensioning and execution according to EC2 and approval analogous to a solid panel is permissible. The sag of the plate may have to be limited by raising the ceiling.
Simple, safe, economical
The dimensionally stable and stackable hollow bodies, which are installed as spacers between the upper and lower reinforcement layers with the help of red and black spacer brackets, have proven themselves on the construction site. The hollow bodies, which are open at the bottom and have ventilation holes, cannot float during concreting. In addition, concreting can be checked through the ventilation holes using the "dipstick method". The execution is simple and safe.
Role model in nature
Following the example of nature, the hollow bodies are installed in a honeycomb arrangement. The mathematician Joseph-Louis-Lagrange provided evidence of this densest packing of circles in a surface as early as 1773.
With the honeycomb arrangement of the hollow bodies, a concrete and thus weight reduction of up to 35% is achieved.
Foundation slabs
The BEEPLATE can also be used to create foundation slabs. Elaborate plate thickening under the supports and walls can be omitted.
CO2 savings
The saving in concrete reduces the consumption of CO2. For the production of concrete, 0.20 tons / m³ of CO21 are used. In addition, structural steel is saved through the weight reduction.
1) Source: Sustainability Report 2006/2007 of the Austrian cement industry. Assumption: 320 kg / m³ cement content C35 / 45
Sand is already becoming scarce worldwide. A reduction in concrete consumption is therefore necessary. This saves important resources and also energy.