Question:
In RF‑CONCRETE Surfaces, I get non-designable situations with a note saying that the shear resistance cannot be checked (cross-section entirely cracked). What is the reason for this message?
Answer:
A non-designable situation like this is displayed if the shear resistance without shear reinforcement V-Rd,c is arithmetically smaller than zero.
The value for V-Rd,c of less than zero is caused by large tensile axial forces. In this context, the cross-section is completely under tension or completely cracked, and no shear force resistance can be created.
For coated cross-sections with planned shear reinforcement, the following situation results:
In RF-CONCRETE Surfaces, if V-Rd,c