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 0,002 - 0,0035.
The degree of reinforcement is checked using the formula:
- Column - check for dominant compression
ρmax = 0,04
ρmin = 0,0013
- for fy = 460 N/mm2
ρmin = 0,0024
- for fy = 250 N/mm2
- Beam - check for dominant bending
ρmax = 0,06
ρmin = 0,004
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.