284 



TKSTINt; OF STRUTS. 



Here P is the collapsing or buckling load, E is the modu- 

 lus of elasticity of the material, / is the moment of inertia 

 of the section, and / the length of the strut. The mean- 

 ing of the equation is that if P is greater than 



the strut will collapse. 



In the above form, it refers to a pillar which is rounded 

 or hinged at the ends. (See Figs. 146 and 147.) 



