The great advantage of Elascon's timber+concrete composite structure is its ability to incorporate more mass (concrete) into the static building structure. The high modulus of elasticity of concrete and the corresponding increase in thickness produced by the concrete layer increases load bearing strength of V-HB-S zone (the concrete pressure zone resting on the timber beam) by a factor of 3. Here we speak of the net load bearing capacity.
To give you an example: a timber ceiling without timber+concrete composite has a load bearing capacity of the 200 kg per square metre. A finished composite ceiling has a load bearing capacity of as much as 600 kg per square metre (and that with the added mass of concrete of 150 kg per square metre).
In the composite structure, the layer thickness of the concrete enters the calculation process with the factor 4, so that significant additional load bearing reserves of the composite structure are generated here. With the Elascon V-HB-F variant, with which the concrete is introduced so that it finishes flush with the upper edge of the timber beam in the open floor area, the load bearing strength can be doubled as a rule. However, there is no transverse distribution here. Each field must be considered as an individual link in static terms.
It is obvious that the timber beams of the timbered ceiling and the ends of the beams need to be serviceable. They constitute the tensile bands of the composite structure. Also, all load dissipating structural parts must be checked for adequate stiffness. Our Easycon static calculation program version 1.6 and later outputs an exact listing of those superimposed loads that are transmitted to the load dissipating structural members, such as walls, foundations and supporting beams. These values then allow planning and verification of the further load dissipation right down to the foundation.