Verification of Circular RC Cross Section
The program verifies a reinforced concrete pile using the method of limit deformation. The maximum allowable strain of concrete in compression is 0.003. Compression reinforcement is not taken into account. Minimum eccentricity is applied: (Art. 4.3.7.5):
The degree of reinforcement is checked using the formula:
Interaction diagram N-M
Usage ratio of concrete cross-section subject to the combination of bending moment and normal force is determined as |0L| / |0R|. Where L is load and R is strength with prescribed eccentricity.
Shear
First, the program computes the ultimate shear strength of concrete VRd,c (Art. 4.3.3.2.1, 4.3.3.4.4).
where (Art. 2.3.2.4):
If the ultimate shear strength of concrete is exceeded, the ultimate shear strength VRd,max (Art. 4.3.3.4.6) and strength of reinforced section VRd,s are checked (Art. 4.3.3.4.3).
