CLAYS OF XEW YOEK 



649 



obtained mostly from the World's Columbian exposition, some of 

 tbese being made to show the strength of the sanae kind of bricks 

 when tested in different positions. (Tests of metals^ 1894, United 

 States war department) 



Tests made to show relative strength of bricks according to the 



direction in which tested 



BRICKS TESTED FLATWISE 





Surface 

 area 



Ultimate strength 



Eight 



Total 





Per square 

 jinch 



Inches 



Sq. 'inches 



Pounds 





Pounds 



2.16 



27.63 



308 400 





11162 



2.10 



27.26 



367 800 



y 



13 492 



2.19 



27.77 



298 500 





10 749 



2.21 



27.90 



259 200 





9 290 



Average 



Pounds 



11173 



BRICKS TESTED EDGEWISE 





Surface 

 area 



Ultimate strength 





Hight 



Total ^^'inc'h^''^ 



Average 



Iiichea 



Sq. inches 



Pounds Pounds 



Pounds 



3.58 



16.37 



124 800 7 623^ 





3.60 



17.15 



159 100 9 277 

 114 000 6 714 1 



8 978 



3.57 



16.98 



3.48 



16.54 



203 400 12 297 j 





7.73 

 7.72 

 7.75 

 7.71 



BRICKS TESTED ENDWISE 



7.37 59 200 8 032^ 



7.83 45 700 5 837 I 



7.85 51 600 6 573 \ 



7.54 54 800 7 268 j 



6 927 



