Axial capacity of short column

Output:

Definitions
• ϕ_c = Resistance factor for concrete
• ϕ_s = Resistance factor for reinforcing steel
• f_c = Specified concrete strength (psi)
• f_y = Specified reinforcing steel yield strength (ksi)
• b = Effective width of cross section (in)
• h = Overall depth of cross section (in)
• n_b = Quantity of reinforcing bars
Axial capacity
• Pr = 0.80 Pro = 0.80 [ α1 ϕc fc (Ag - As) + ϕs As fy]
• α1 = 0.85 - 0.0015*fc = 0.8 (fc in MPa)
• Ag = b d = (12) (12) = 144 in2
• As = nb Ab = (6) (0.775) = 4.65 in2
• Pr = 0.80 [ (0.8) (0.65) (5) (144 - 4.65) + (0.85) (4.65) (60)]
• Pr = 479.57 kip
User Notes:
User notes