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Calculate Column Gross Area for a Short Column With Small Eccentricity:
 
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 load on the column (P - lb or N)
Concrete compressive strength (f'c - psi or kPa)
Steel yield strength (fy - psi or kPa)
Concrete cover over reinforcement (Cvr - in or cm); typically 1.5 in or 3.81 cm
Reinforcement ratio, area of steel/gross area (pg)
Note: Typically pg ranges from 0.01 to 0.08 with starting values approximately 0.02 to 0.025.  

     
   
   
Output:  
   
 
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Gross area, Ag =
Outside Column Diameter, Dg =
Column Core Diameter, Dc =
Area of steel reinforcement, Ast =
   
 
 
 
 



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