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Calculate the Flexural Steel Area For A Spread Footing Design:
 
               
Calculation:
Designer/Checker:
   
Input:  
   
 
 
(Note: All input Metric units are converted to English units for the equations below and then the output English units are converted back to Metric)
 
 
Total factored vertical load on footing (P - kips or kN)
Moment on footing around short axis (Ms - in-lb or N-m)
Moment on footing around long axis (Ml - in-lb or N-m)
Width of footing (B - in or cm)
Length of footing (L - in or cm)
Thickness of footing (T - in or cm)
Depth to steel reinforcement (d - in or cm)
Concrete compressive strength (f'c - psi or kPa)
Steel yield strength (fy - psi or kPa)
Width of column base (CW - in or cm)
Length of column base (CL - in or cm)
Width of steel column base plate (CPW - in or cm)
Length of steel column base (CPL - in or cm)

     
   
   
Output:
 
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Bending moment at critical section short axis, Mus =
Bending moment at critical section long axis, Mul =
Required area of steel in the short direction, Assh =
Required area of steel in the long direction, Aslng =
Reinforcement ratio short direction, ps = Assh/(BT) =
Reinforcement ratio long direction, pl = Aslng/(LT) =
 
 
 
 
 



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