Column Interaction Diagram Excel !!exclusive!!

c_bal = (ε_cu / (ε_cu + ε_y)) * d Where ε_y = fy / Es . In Excel: = ($B$4*$B$6)/($B$4 + ($B$7/$B$8))

The moment capacity when the axial load is zero. Failure Region: Any load combination ( ) falling outside the curve indicates structural failure. How to Create the Diagram in Excel column interaction diagram excel

Where steel yields exactly as concrete crushes. Pure Tension: c = 0. Step 3: Calculate Strains and Stresses c_bal = (ε_cu / (ε_cu + ε_y)) * d Where ε_y = fy / Es

fs = fy if strain ≥ fy/Es else Es * strain (but ≤ fy, ≥ -fy) Es = 29,000 ksi ≥ -fy) Es = 29