STREMMA TOGRAPH. 



107 



Table No. 3. 

 Maximum Fibre Stresses in Base of Rail. 











■ 



Tensil 



e Fibre Stress per 



Compres- 



Rail 











Square Inch 





sive fibre 



Weight 



Ballast. 





-ocoraotive. 











stress per 



per 

 Yard. 



Pilot. 



Drivers. 



Tender. 



square 

 inch. 



Pounds. 











Pounds. 



Pounds. 



Pounds. 



Pounds. 



60 



Gravel. 



Pa5S.,> 



:©. 809, Class Pk. 



6.180 



11.670 



2.750 



1.370 



60 



(( 



Frgt., 



" 557, ' 



' R. 



3-430 



7-550 



3-430 



.690 



60 



vStone. 



Pass., 



" 809, ' 



' Pk. 



11.860 



19-540 



9.770 



3-490 



60 



( < 



I">gt., 



" 557, ' 



' R. 



II. 160 



16.050 



9.770 



1.400 



70 



Cinder. 



Pass., 



' 809, ' 



' Pk. 



10.730 



17.170 



10.020 



4.290 



70 



Gravel. 



(( 



1 ( < ( ( 



( <( 



8.970 



18.620 



8.280 



5-520 



70 



(( 



Frgt., 



' 557, ' 



' R. 



7-590 



13.790 



6.210 



4.830 



70 



Stone. 



Pass., 



- 809, ' 



' Pk. 



10.070 



14-390 



7.910 



6.470 



70 



(( 



Frgt., 



' 557, ' 



' R. 



6.470 



II. 510 



6.470 



2.880 



70 



Bridge. 



Pass., 



- 809, ' 



' Pk. 



9-450 



18.180 



10.910 



2.180 



70 



Splice bar. 



(( 



( ( it ( 



< < ( 



13.840 



22. 140 



9.230 



8.300 



85 



Cinder. 



Pass., 



' 809, ' 



' Pk. 



7.160 



10.030 



5.020 



3-580 



85 



<■<■ 



( i i 



' 1515, ' 



' T. 



5- 730 



12.180 



7.880 



4.300 



85 



< ( 



Frgt., 



' 557, ' 



' R. 



3-580 



10.030 



5.020 



4.300 



85 



Gravel. 



Pass., 



' 809, ' 



' Pk. 



10.750 



12.180 



6.450 



4.300 



85 



(( 



(( < 



' 1515, ' 



' T. 



9.310 



17.120 



9.310 



5.020 



85 



ii 



Frgt., 



' 557, ' 



' R. 



7.160 



10.030 



2.870 



7.880 



85 



Stone. 



Pass., 



- 809, ' 



' Pk. 



7.160 



10.750 



4.300 



4.300 



85 



( < 



Frgt. , 



" 557, ' 



' R. 



4.300 



10.030 



5.020 



3-580 



100 



Stone. 



Pass., 



- 809, ' 



' Pk. 



6.320 



9.840 



5.620 



4.220 



100 



Stone — tie 

 removed. 



(( 



(< (( ( 



( li. 



10.540 



18.970 



8.430 



2.IIO 



100 



Stone. 



Frgt., 



" 557, ' 



' R. 



3-510 



8.430 



4.220 



2.810 



95 



Frozen grav. 

 rail No. i. 



Pass., 



" 209, Bra 



i.R.R. 



6.870 



9.920 



6.870 



3050 



95 



Frozen grav. 

 rail No. 2. 



(( 



U (( 



( <( 



7.630 



11.450 



6.870 



a 7.630 



" a " Taken at different point on the rail. 



