Dear Rhino/Karamba team,

For a project I am working with the ‘Optimize Reinforcement’ tool. My problem now is that the quantities of needed reinforcement given by this tool are around 3 times higher than the reinforcement calculated by hand. After comparing both models it turns out that the bending moments and internal forces are the same in hand calculations and in Karamba, but the ‘Shell line Results’ tool shows that the stress diagram is still linear, even though the tension strength of Concrete has long be surpassed. It would be expected that the concrete stress then becomes zero and the reinforcement takes over. This does however not show anywhere and stresses just keep increasing linearly.

My questions now are: 1) Is there an explanation for the high amount of reinforcement, and 2) how come the stress diagram is linear even after the concrete should have cracked?

SlabTest.gh (39.5 KB)

Thank you for your help.

Kind regards,

Victor