Verification of rectangular RC cross-section under N, M, V
Verification of rectangular RC cross-section under N, M, V
The cross-section is rectangular, unilaterally reinforced and loaded by the bending moment and normal compression force. The program verifies a reinforced concrete section using the method of limit deformation. The maximum allowable strain of concrete in compression is 0,003. Compression reinforcement is not taken into account.
The computed degree of reinforcement is checked using the following expressions:
Shear
where:
First, the program computes the ultimate shear strength of concrete Vc.
for cross-sections with height smaller than 200mm
vc is computed acording to following formulas for cross-sections with height greater than 400mm, intermediate values are obtained using linear interpolation method.
where ρw is degree of reinforcement and fc' is limited to value 50MPa.
If the ultimate shear strength of concrete is exceeded, the ultimate shear strength Vmax is checked.
Next, the necessary reinforcement area is given by:
