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2019-08-02

[EN] FAQ 003404 | In RF-CONCRETE Surfaces, I obtain a high amount of reinforcement in relation to a ...

Question:
In RF‑CONCRETE Surfaces, I obtain a high amount of reinforcement in relation to a lever arm that is almost zero. How is such a small lever arm of internal forces created?

Answer:
The situation could be caused by the following conditions:

The reinforcement layers are virtually adjacent to each other in the neutral axis of the surface.
You have selected a smaller rebar diameter.
The cross-section is completely drawn, that is, there is no neutral axis depth.

In this case, the smallest distance between the reinforcement layers is applied as a lever arm. If it is close to zero, the lever arm is also set as close to zero.