106 



DUDLEY. 



in order to obtain the maximum fibre stresses, on the further 

 assumption that the strains were proportional to their distances 

 from the neutral axis of the rail. 



Table No. i. 

 Railroad Track Experiments — General Dimensions of Rails. 















Moment 



Distance Neutral 



Weight 





Width 



Width 



Thickness 



Moment 



of resis- 



Axis to Outside 



per 



Height. 



of 



of 



of 



of 



tance. 



Fibre. 



Yard 





Base. 



Head. 



Web. 



Inertia 



/ 















/. 



R=~, 

















n 



Head n 



Base «' 



Pounds. 



Inches. 



Inches. 



Inches. 



Inch. 







Inches. 



Inches. 



60 



4i 



A\ 



2| 



1 



14.222 



6.693 



2.125 



2.125 



70 



4i 



M 



2tV 



1 



2 



18.055 



8.282 



2.32 



2.18 



85 



5 



5 



9 

 2t6 



\l 



26.374 



10.853 



2.57 



2.43 



100 



51 



51 



ol3 



2 re 



5 

 8 



38-957 



14.812 



2.87 



2.63 



95 



53V 



51 



3 



5 

 8 



32.280 



13-563 



2.65 



2.38 



Table No. 2. 

 Weight of Locomotives. 





Total, 

 Pounds. 



Engine. 



Tender, 

 Pounds. 



Weight per wheel. 



Locomotive. 



Pilot, 

 Pounds. 



Drivers, 

 Pounds. 



Wheel. 



Pounds. 



Tons. 



Passenger No. 809, 

 Class Pk. 



Passenger No. 15 15, 

 Class T. 



Freight No. 557, 

 Class R. 



Passenger No. 209, 

 B. & A. R. R. 



197.050 

 222.500 



188.600 

 199.700 



39- 750 

 50.300 



11.000 

 40.700 



87.300 

 95.200 



113.800 

 75.000 



70.000 - 

 77.000 - 



63.800 -1 

 1 

 1 

 I 



84.000 - 



Pilot. 



Driver, first. 

 Driver, second. 

 Tender. 

 Pilot. 



Driver, first. 

 Driver, second. 

 Tender. 

 Pilot. 



Driver, first. 

 Driver,, second. 

 Driver, third. 

 Driver, fourth. 

 Tender. 

 Pilot. 



Driver, first. 

 Driver, second. 

 Tender. 

 First truck. 

 Second truck. 



9-937 

 21.750 

 21.900 



8.750 



12.575 

 24.250 



23-350 

 12.833 

 5-500 

 13-250 

 13-750 

 15-650 

 14.250 



7-975 

 10.175 

 18.750 

 18.750 



9.250 

 11.750 



4.968 

 10.875 

 10.950 



4.375 

 6.287 

 12.125 

 11.675 

 6.416 

 2.750 

 6.625 



6.875 

 7.825 



7-125. 



3-987 

 5.087 



9-375 

 9-375 



4.625 

 5.875. 



