266 MECHANICS 



MOMENTS OF INERTIA, ETC. 



Name of Section. 



Solid 

 circular 



Hollow 

 circular 



Solid square 



Hollow 

 square 



Solid 

 rectangular 



Hollow 

 rectangular 



Solid 

 triangular 



Solid 

 elliptical 



Hollow 

 elliptical 



I-beam 



Cross with 

 equal arms 

 (approxi- 

 mate) 



Angle with 

 equal arms 

 (approxi- 

 mate) 



&f 



12 



12 



12 



bd? 

 36 



12 



&<* Mi 3 



24 



32 



