Verification

Values: L = 11' 2''; B = 11' 2''; c = 18''; d = 18"; DL = 400 kips; LL = 270 kips

Outputs:

• Factored net Soil Pressure: 7.31 ksf (Book) = 7.31 (Application)
• New Critical Shear perimeter: 805 ksf (Book) ≈ 804.53 (Application)
• Critical Section for one way Shear: 308 ksf (Book) ≈ 308.26 (Application)
• Moment: 954 kip-ft (Book) ≈ 953.97 (Application)
• Reinforcement: As in both direction = 7.79 in² (Book) ≈ 7.85 in² (Application)
• Development Length inside footing = 54.8 in (Book) ≉ 32.9 (Application)
  • Author of Book used the following Formula: ld = 54.8 db 𝜳e / 𝝀
  • Application used Equation 12-1 Section 12.2.3 - ACI 318-11 which is more accurate
• Area of dowels required: 1.76 in² (Book) = 1.76 in² (Application)
• Development Length in Column: 23 in (Book) ≈ 22.5 in (Application)

Values: L = 12'; B = 10'; c = 16''; d = 16"; DL = 180 kips; LL = 120 kips

Outputs:

• Factored net Soil Pressure: 4.2 ksf max & 2.6 ksf max (Book) = 4.2 ksf max & 2.6 ksf max (Application)
• Critical Shear perimeter: 374 ksf (Book) ≈ 373.68 (Application)
• Critical Section for one way Shear: 147 ksf (Book) ≈ 138.44 ksf (Application)
  • Author of Book used uniform pressure 4.2 ksf below footing which give the maximum Vu value
  • Application took used the exact pressure under footing which give the proper Shear value
• Moment: 563 kip-ft (Book) ≈ 563.62 (Application)
• Reinforcement: As in both direction = 6 in² (Book) ≈ 6.01 in² (L) & 7.82 in² (B) (Application)
• Development Length inside footing = 48 in (Book) ≉ 26.6 (Application)
  • Author of Book used the following Formula: ld = 54.8 db 𝜳e / 𝝀
  • Application used Equation 12-1 Section 12.2.3 - ACI 318-11

Values: L = 6'; B = 6'; c = 12''; d = 12"; Axial Load = 200

Outputs:

• Factored net Soil Pressure: 5.56 ksf (Book) = 5.56 ksf max (Application)
• Critical Shear perimeter: 177.7 ksf (Book) = 177.7 (Application)
• Critical Section for one way Shear: 50 ksf (Book) ≈ 50 ksf (Application)
• Moment: 104.3 kip-ft (Book) ≈ 104.17 (Application)
• Reinforcement: As in both direction = 2 in² (Book) ≈ 2.07 in² (Application)
• Development Length inside footing = 13.2 in (Book) ≈ 13.2 (Application)

Values: L = 10'; B = 12'6"; c = 18''; d = 18"; Axial Load = 1200; Mx = 3000 k-ft; My = 1200 k-ft

Outputs:

• Max Pressure: K x 9.6 ksf = 3 x 9.6 = 28.8 ksf (Graph) ≈ 28.6 ksf (Application)

Values: L = 10'; B = 12'6"; c = 18''; d = 18"; Axial Load = 1200; Mx = 3000 k-ft; My = 4500 k-ft

Outputs:

• Max Pressure: K x 9.6 ksf = 10 x 9.6 = 96 ksf (Graph) ≈ 95.5 ksf (Application)