The geometry of the model tested was not within these limits of applica- 

 bility. 



Considering the allowable shear through to be one-half of the tensile yi^ld 

 strength, the allowable pressure on the plexiglass window from the stand- 

 point of shear stress was: 



2tT t(T 1.00(7000) ,. nnn 



Po = = = ^ = 13, 000 psi 



^° r r 0. 537 ^ 



