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Validate 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)
 
 
Trial design footing area (A - sf or sm)
Thickness design of footing (t - in or cm)
Thickness of concrete floor adjacent to footing (tf - in or cm)
Depth of footing below grade (Df - ft or m)
Allowable pressure or soil bearing capacity (pa - tsf or kPa)
Soil density (d - pcf or kg/m^3)
Load on footing (P- tons or kN)

     
   
   
Output:
 
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Footing Press. (pf) =
Pressure from floor (pq) =
Pressure under footing (p) =
Total pressure (ptotal) =
Soil surcharge pressure (ps) =
Actual pressure (pactual) =
 
 
 
 
 



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