Mi-myth <>f <',< te ax Determined by Test* 

 V ule (it W'ntert'nm Arsenal in 1899. 



(7) That the modulus of elasticity of concrete can be 

 taken at 3.000,00^ if a 1:2:4 mivture is considered. See 

 tables on pages 36 and 37. 



(8) That the adhesion between metal and concrete haa 

 run from r.oo to Too Ib. per sq. iu., making a working 

 value of 100 to 140 Ib. 



(9) That when we 



= 15 



we mean that the concrete wih be deformed 15 times as 



much as the st.-.-l if tin- same intensity i'tr square inch 

 of material is obtained. 



