CAMBBIA STEEL. 



167 



VALUES OF MOMENTS OF INERTIA FOR STAND- 

 ARD AND CAMBRIA SECTIONS. 



A - [b + 2 (a - t)] t. 



, (bt-t*) (a-at) 



i-r 



I. Axis 1 - 1 = 



-2 - 



ab-a'(b-2t) 

 12 



-2a'b'-6a'an>' 



V Minimum. Axis 3 - 3 = 



3s*(b-ti)+2b's' (s'+3s)+3tid-l (ti-t) (3d-l) 



6A 



[.Axisl-l^^^r-^'-ACx- 





n') 



, sb'-fs^iH-lt* ^b r [2b / H-(2b^+3ti)^] 

 I,Axis2-2^ ^2 + - 36~ 



144 



e Area of head. 

 A - e + t (d - k) + (b - t) (a + -|) 



2A 



= e Li6+V a - -*2~;j1 



+ W32bs._ A(x _ s)2> 



i^-f+**g**4 



36 



