COMPRESSIVE AND TRANSVERSE STRENGTHS OF BRICKWORK. LXXXI. 







ottom up to 

 n back side, 

 p to 98 tons, 

 til fracture 

 top courses 



rl <° M 



of an hour. 



ned out until 

 s after which 

 ng fractured. 



in any way 



14 days. 





09 



CO 



CO 







43 pCl 





i-l 



•* 



rH 







ended un 

 minutes t 

 every bri 





O 

 ■43 



8 



rH 



ba 





QD 







»H.-.fH 3- a 00 



-H 7 







<D 



Ol 





1 



ks occurred from 

 ide and 3 courses 

 dually increased 

 ually opening u 

 ricks except the 



actured. 



cracks which gradually ex 

 s was supported. After 5 

 broke with a loud report- 



st three-quarters 



surred which ope 

 ported, 25 minute 

 — every brick bei 

 was not affected 

 ch it carried for 





2 



a 

 



U 



c3 

 ^2 



g 



u 

 43 

 ra 



43 



O 



a 



s 



OS 







B 



43 

 OS 



a4 

 < 





hair-crac 

 3s in top s 

 d was gra 

 cks grad 

 d. All b 



ctured. 

 tion of te 



cracks oc 

 s was sup 

 mn broke 

 column 

 tons, whi 



itto 



itto 



a 



'o 







lours, 

 ding fore 

 ast 65 to 







09 



5 



as 

 c 



R 





Fine 

 7 cours 

 The loa 

 the era 

 occurre 

 were fr 



Fine 

 100 ton 

 column 



was tra 

 Dura 



Fine 

 100 ton 

 the colu 



This 

 by 100 



r& rtf 



This 

 for H 1 



Crus 

 tons, le 



SZ5 



Ratio of 

 strength 

 of pier to 

 a single 

 brick (295 

 tons sq.ft. 





CO 







S* 3* ^ 



O <N O 



CO VO CO 



600% 

 60-0% 





 6 



CO 







rH 

 <* 



: 



O 



|g»a"« 

















5 





5 



CO 



CO CO 





. 



<N 





Ulti 



load 

 per f 



-t> 



J> 



<N £^ 







"# 







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1— 1 



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as 



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°> a^ 



9 in. 

 men 

 er 



.2§p.2§^.2§£ 



BS& ajo ns 



9 in 

 men 

 ter 

 sand 





S + 

 5 a? 71 



n, 1 



15% 

 icity 







,0 £ 



m 





rick pier, 56 in. by 

 by 9 in.; mortar Ice 

 + 2 sand + 15% wa 

 itto, 1 cement + 4 s 

 + 15% water 

















rick pier, 56£ in 

 by 9 in.; mortar 

 + 2 sand + 15% 



rick pier, 56£ in 

 by 9 in.; mortar 

 + 2 sand + 15% 



rick pier, 55*6 in 

 by 9 in.; mortar 

 + 4 sand + 15% 

 rick pier, 56 in. 

 by 9 in.; mortar 

 + 4 sand + 15% 

 rick pier, 56 in. 

 by 9 in.; mortar 

 + 2 sand + 15% 



O 

 -r3 







4 in. by 9 in. colt 

 in. long, 4 in. ecc 

 mortar 1 cemenl 

 + 15% water 

 I in. by 9 in. co 

 cement + 4 san 

 water, 4 in. eccn 







ffl 



pq 



cq cq pq 



pq « 



S 



rH 



rH 





It 



Q 



d 



d 6 «sj 



-*3 < 



^' 



< 



<«i 





iH 



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CO Tf< 50 



«* *> 



00 



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6- Dec. 19, 1900. 



