How is the shrinkage considered in the calculation with RF‑CONCRETE Deflect?

In the analytical deformation analysis with RF‑CONCRETE Deflect, the shrinkage of concrete is considered by means of an additional curvature.

In this case, it should also be noted that the asymmetric distribution of reinforcement on the top and the bottom of the surface leads to the additional curvature because a higher reinforcement area on one of both sides would significantly affect the shrinkage in comparison with the opposite directions. This results in the additional curvature of the surface.

Despite the increased reinforcement, this effect may result – depending on the structure – in no reduction of the deformation from the calculation.

More information for this can be found in the RF‑CONCRETE Surfaces manual in Chapter 2.7.5.2.