. Steel rails; their history, properties, strength and manufacture, with notes on the principles of rolling stock and track design . 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 0 fO 0 CM CM ■<* ^ ^ ~~ ooo CM Pacific Type, Prairie Type, 262-234. Fig. 31. — Dynamic Wheel Loads of Typical Passenger SteamLocomotives. See Plate XX for static loads and Table XV for relation betweciistatic and dynamic loadinp;. Note.—Total woisht on to be equally dividedbetween the driving axles; if the main wheel is more heavily loaded thedynamic pressure will be increased accordingly. By referring
. Steel rails; their history, properties, strength and manufacture, with notes on the principles of rolling stock and track design . 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 0 fO 0 CM CM ■<* ^ ^ ~~ ooo CM Pacific Type, Prairie Type, 262-234. Fig. 31. — Dynamic Wheel Loads of Typical Passenger SteamLocomotives. See Plate XX for static loads and Table XV for relation betweciistatic and dynamic loadinp;. Note.—Total woisht on to be equally dividedbetween the driving axles; if the main wheel is more heavily loaded thedynamic pressure will be increased accordingly. By referring toFigs. 6 and 7 it is seenthat the excess pres-sure, caused by theangularity of the mainrod and counterbal-ance, is less in amountfor these lighter en-gines. Table XVbshows the dynamicaugment of engineshaving wheel loads lessthan 25,000 pounds. We may now pro-ceed to construct typi-cal load diagiams forthe different classes oflocomotives. PlatesXX and XXI give theprincipal dimensions ofeach type of engineunder discussion, fromwhich, with the aid ofTable XV, the loaddiagrams given in and Fig. 32 havebeen prepared. PRESSURE OF THE WHEEL OX THE RAIL 73
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