Design of the Base

 

Assume Material for the base : Cast Iron ASTM Class 40

 

1.    Bearing Pressure between the nut and the Base

 

Assume

 

 

 

†† CHECK

 

 

2.    Buckling Analysis of the Base:

 

 

 

 

 

 

 

Check for Johnsonís Column:

 

 

 

 

If it is a Johnsonís Column then find the Critical Load by using equation and check whether Buckling occurs or not:

 

 

 

3.    Compression Stress on the Column:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4.    Checking Stresses on the Base Seat:

 

 

 

Assuming a uniformly distributed load on the entire base seat at a circumference which is in the center of the base seat

 

 

 

 

 

 

5.    Bearing Pressure between the Base and Concrete Surface:

 

 

 

 

 

 

 

 

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