Shallow Rectangular Footing Calculator

Force Dead Load (P_DL)

Force Live Load (P_LL)

Moment Dead Load (M_DL)

kN-m

Moment Live Load (M_LL)

kN-m

Direction of Moment (from the center)

Orientation of Moment Type

Footing Dimension (L)

Footing Dimension (B)

Column Dimension (C_L)

Column Dimension (C_B)

Center Distance b/w Column and Footing

Soil Unit Weight (γ)

kN/m³

Concrete Unit Weight (γ_c)

kN/m³

Depth of Footing (D_f)

Thickness of Footing (t)

Output Values

Max Soil Net Pressure (q_n,max)

kPa

Min Soil Net Pressure (q_n,min)

kPa

Max Soil Gross Pressure (q_g,max)

kPa

Min Soil Gross Pressure (q_g,min)

kPa

Force Dead Load (P_DL)

Force Live Load (P_LL)

Moment Dead Load (M_DL)

kN-m

Moment Live Load (M_LL)

kN-m

Direction of Moment

Orientation of Moment Type

Footing Dimension (L)

Footing Dimension (B)

Column Dimension (C_L)

Column Dimension (C_B)

Load Eccentricity (e_load)

Soil Unit Weight (γ_soil)

kN/m³

Concrete Unit Weight (γ_c)

kN/m³

Depth of Footing (D_f)

Thickness of Footing (t)

Concrete Strength (f'_c)

MPa

Steel Yield Strength (f_y)

MPa

Concrete Cover (cc)

Rebar Diameter (d_b)

Wide Beam Shear Distance from Edge

Output Values

Demand Load (V_u)

Capacity of the Footing (φV_c)

Remarks

Force Dead Load (P_DL)

Force Live Load (P_LL)

Moment Dead Load (M_DL)

kN-m

Moment Live Load (M_LL)

kN-m

Direction of Moment

Orientation of Moment

Footing Dimension (L)

Footing Dimension (B)

Column Dimension (C_L)

Column Dimension (C_B)

Center Distance b/w Column & Footing

Soil Unit Weight (γ)

kN/m³

Concrete Unit Weight (γ_c)

kN/m³

Depth of Footing (D_f)

Thickness of Footing (t)

Concrete Strength (fc')

MPa

Steel Yield Strength (f_y)

MPa

Concrete Cover (cc)

Reinforcing Bar Diameter (Ø)

Distance (x)

Step 1: Moment of Footing

Ultimate Load (Forces)

Ultimate Load (Moment)

kN-m

Footing Moment (Mf)

kN-m

Step 2: Determine If No Uplift

Eccentricity (e_u)

Max Eccentricity w/o Uplift

Result

Step 3: Soil Net Pressure

Max Ultimate Soil Net Pressure (qu1)

kPa

Min Ultimate Soil Net Pressure (qu2)

kPa

Step 4: Effective Depths

Effective Depth on Long Direction (dB)

Bars on Short Direction (Top Bars)

Step 5: Solve q_u4

Ultimate Soil Pressure at edge of Column (qu₄)

kPa

Step 6: Ultimate Moment

Design Moment (M_u)

kN-m

Step 7: Minimum Steel Ratio

Minimum Steel Ratio (ρ_min)

Step 8: Number of Top Bars and Bottom Bars

Bars on Long Direction (Bottom Bars)

bars

Bars on Short Direction (Top Bars)

bars

Design Summary (Minimum Steel)

Min. Bottom Bars (Long Dir)

Min. Top Bars (Short Dir)

Shallow Rectangular Footing Calculator

Output Values

Output Values

Step 1: Moment of Footing

Step 2: Determine If No Uplift

Step 3: Soil Net Pressure

Step 4: Effective Depths

Step 5: Solve qu4

Step 6: Ultimate Moment

Step 7: Minimum Steel Ratio

Step 8: Number of Top Bars and Bottom Bars

Design Summary (Minimum Steel)

Step 5: Solve q_u4