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Calculate Column Spread Footing Steel Depth (d) for 2-Way (Punching) Shear:
 
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)
 
Factored vertical load on the footing (P - lb or N)
Moment on footing around short axis (Ms - in-lb or N-m)
Moment on footing around long axis (Ml - in-lb or N-m)
Applied shear load on footing in short direction (Vfs - lb or N)
Applied shear load on footing in long direction (Vfl - lb or N)
Width of footing (B - in or cm)
Length of footing (L - in or cm)
Concrete compressive strength (f'c - psi or kPa)
Width of Column base (CW - in or cm)
Length of Column base (CL - in or cm)
Trial design depth to steel (d - in or cm)

     
   
   
Output:
 
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Allowable shear stress (short direction), (0.85)Vcs =
Allowable shear stress (long direction), (0.85)Vcl =
Ultimate 2-way shear stress (short direction), Vus =
Ultimate 2-way shear stress (long direction), Vul =
   
 
 
 
 
 



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