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Calculate Spiral Reinforcement Ratio For a Short Spiral 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)
 
 
     
Column gross section area (Ag - sq in or sq cm)
Concrete compressive strength (f'c - psi or kPa)
Steel yield strength (fy - psi or kPa)
Area of core (Ac - sq in or sq cm)
   

     
   
   
Output:
 
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Reinforcement ratio, ps =
   
 
 
 
 



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