Shallow Square Footing Calculator

Dead Load (DL)

Live Load (LL)

Size of Column (c)

Size of Footing (B)

Thickness of Footing (t)

Main Bar Diameter (Ø)

Solid Unit Weight(γ)

kN/m³

Concrete Unit Weight(γ_c)

kN/m³

Concrete Compressive Strength (fc')

MPa

Steel Yield Strength (fy)

MPa

Depth of Footing (Df)

Concrete Cover (cc)

Output Values

Demand Load (V_u)

Capacity of Footing (Ø_c)

Remarks

Dead Load (DL)

Live Load (LL)

Size of Column (c)

Size of Footing (B)

Thickness of Footing (t)

Main Bar Diameter (Ø)

Solid Unit Weight(γ)

kN/m³

Concrete Unit Weight(γ_c)

kN/m³

Concrete Compressive Strength (fc')

MPa

Steel Yield Strength (fy)

MPa

Depth of Footing (df)

Concrete Cover (cc)

Output Values

Demand Load (V_u)

Capacity of Footing (Ø_c)

Remarks

Dead Load (DL)

Live Load (LL)

Size of Column (c)

Thickness of Footing (t)

Allowable Soil Pressure (q_a)

kPa

Slab Pressure (s)

kPa

Soil Unit Weight (γ)

kN/m³

Concrete Unit Weight (γ_c)

kN/m³

Concrete Compressive Strength (fc')

MPa

Steel Yield Strength (fy)

MPa

Depth of Footing Base (Df)

Concrete Cover (cc)

Main Bar Diameter (Ø)

Number of Steel Bars (n)

Step 1: Initial Effective Depth

Effective Depth (d)

Step 2: Solving for Effective Soil Pressure

Net Soil Pressure (q_eff)

kPa

Step 3: Solving Dimension of Footing

Required Footing Dimension (B)

Step 4: Ultimate Upward Soil Pressure

Ultimate Upward Pressure (q_u)

kPa

Step 5: Check if Safe in Beam Shear (One-Way Shear)

Effective Dimension (x)

Beam Shear Capacity (V_u)

Required d for Beam Shear (d₁)

Check if Safe (d ≥ d₁)

Step 6: Check if Safe in Punching Shear (Two-Way Shear)

Punching Shear Dimension (c + d)

Punching Shear Capacity (V_u)

Effective Depth (d₂)

Check if Safe (d ≥ d₂)

Step 7: Reinforcement of Square Footing

Required Number of Steel Bars (n)

bars

Output Values (Final Answer)

Summary of Results

Final Dimension

Footing Dimensions

Number of Bars on Both Ways