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 Similarly, the denominator becomes 



153 



1 dy 



p) 



2p 



2p-h 



Consequently, 



log. 



which may be written 



(99) d = p - 



2/J + h 

 2 p-h 



log. 



From formula (97), Article 124, the unit stress JP at any point in the 

 cross section, distant y from the mean fiber, is given by the equation 



Replacing dF by bdy, and separating the integral in the denominator 

 into partial integrals by means of division, this integral becomes 



ff y + d **dF= Ctf+ldy + 



J y + p ( J y + p 



2 p + h~\ 



-rt lo g.7 -T 



z p fi \ 



Substituting for d its value from equation (99), this expression 

 finally reduces to 



/(y + dfjv 7-T h 



-dF=l 

 ii -t- p 



2/3 + 



2 p-h 



= bhd. 



