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NAME:-Design of rectangular column with Calculation of Interaction Diagram Excel Sheet based on ACI Code

1 COLUMN INPUT DATA AND OUTPUT DATA

Compressive strength of concrete,

Yield strength of rebars,  

Column width,   

Column breadth,  

Clear cover to rebar centroid, 

Amount of rebars,   

Diameter of rebars,   

2 CALCULATION OF INTERACTION DIAGRAM INPUT AND OUTPUT DATA

Modulus of elasticity,

 β₁ = 0.85   

β₁ = 0.85 - 0.05(fc' - 28)/7

Stress distribution factor, 

Total area of rebars, 

Distance between reinforcement,

Reinforcement ratio, 

Strength reduction factor,

f = 0.65 for P_n ≥ 0.1 * fc' * b * h 

f = 0.90 for P_n = 0   

3 CALCULATION    

 Internal forces in each layer of reinforcement :  

Total internal force of reinforcement :   

Moment due to internal force in each layer of reinforcement :

Total internal moment of reinforcement : 

 Depth of stress block in concrete :   

Compressive forces in the concrete :  

 Moment due to internal force in concrete 

 Nominal axial capacity    

 Nominal moment capacity  

   Ultimate axial capacity   

  Ultimate moment capacity   

4 COLUMN INTERACTION WITH CHART ANALYSIS