TABLE V.— AVERAGE RESULTS OBTAINED FROM TESTING 

 THREE CONCRETE BEAMS, Reinforced with three steel rods 

 I inch diameter, span 120 inches ; cross section 10 x 10 inches. 

 Composition 1 cement, 2 sand, 3 of f inch shivers. Length 11 

 feet, weight 1020 pounds. Age 105 days. 







Extension on 



Compression 





Load in Tons. 



Extension on 



20 inches \\ 



on 20 i'lckes \\ Deflection in 



Extreme Fibre. 



inch from top 



inch, from the Inches. 







of Beam. 



bottom of Beam 





•2 



•4 



•0005 



•00016 



•00018 



0038 



•8 



•0013 



•00045 



•00079 



0098 



1-2 



•0022 



•00083 



•00121 



0169 



1-6 



•0033 



•00114 



•00162 



0242 



20 



005 



•00180 



•00199 



0401 



24 



•0068 



•00252 



•00252 



0574 



2-8 



•0084 



•00322 



•00309 



0670 



3 2 



•0102 



•00409 



•00357 



1011 



3*6 



•0120 



•00508 



•00404 



1041 



40 



•0150 



00602 



•00457 



1L50 



4-4 



0174 



•0U708 



•00516 



1432 



4-8 



■0105 



•00779 



•00571 



1590 



52 



•0219 



■00917 



•00621 



1708 



56 



•(•210 



•01043 



•00675 



1952 



60 



•02(34 



01141 



•00734 



2189 



6*4 



•ML^s 



•01256 



•00793 



2398 



6*8 



■0312 



•dli07 



•00897 



2662 



7-2 



0339 



■01550 



•00945 



2814 



7*6 





•01742 



•01016 



3029 



80 



0400 



•01800 



•01094 



3135 



- I 



•0429 



02191 



•01208 



3283 



8-8 





02442 



•01318 1 



3653 



Note — The average load producing the first crack was 8*8 tons, 

 and the breaking load 9 6 tons. 



TABLE V. a. -TRANSVERSE TESTS OF MORTAR BEAMS. 

 Length 4 x 4 inches, containing 1 H>mmoor cement to 3 Emu Plains 

 Band, and 9% water; no bars. Span 40 inches. 





■ 



q 



pet 



ii in 

 ion. 



z : J- 



Modulus of 



T3 



33 



O 









a 



a: ■*■> 

 - I - 



Z. - - 



Elasticity, lbs. 



J 



9 





c 

 tic 



< 



p. 



a 



: i 



c 



t -: - 



_ _ 





per square inch 

 Wl» _ Wxl0 a 

 48 d I " 16 d 



be 



.5 « 

 *| 



« ft 



1- 

 If 



O oo ° 

 00 £) p 



o ^ s 











x 10« 









518 



22 



0000000 



o-oooooo 





448 



Fig. 



443 





45 



•000390 



•000390 







V.a 1 







89 



•001023 



•001378 



3240 











134 



•000866 



•002244 













179 



•000984 



003228 













224 



•001063 



•004291 



2-460 











269 



•001102 



•005393 













314 



001417 



•006811 













358 



•002047 



•008858 













403 



•001456 



•010315 



1-550 











448 















519 



45 



0000000 



000000 





488 



Fig. 



480 





89 



•001220 



•001220 



2640 





V.a 2 







134 



•000944 



•002165 













179 



•000944 



•003110 













224 



•001181 



•004291 



2370 











269 



•001102 



•005393 













314 



•001378 



•006889 













358 



•001141 



•008031 













403 



•001614 



•009645 













448 



•001259 



•010905 



1-944 









