. American engineer and railroad journal . radius, draw the arc CE intersecting the given circle AB at thepoint E. Then the arc AE equals the line AC. The error in each of the above methods is about 1/900 whenthe arcs AB and AE in Figs. 1 and 2 respectively are 60°, andvaries as the fourth power of the angle so that the error at 30° / equals the length of the jib from the mast to the extreme end is about 1/14400, the line being shorter than the arc. 11 12 AMERICAN ENGINEER AND RAILROAD ALL-STEEL SUBURBAN CAR—LONG ISLAND RAILROAD. ALL-STEEL SUBURBAN CARS. Long Island Railroad. The Lon
. American engineer and railroad journal . radius, draw the arc CE intersecting the given circle AB at thepoint E. Then the arc AE equals the line AC. The error in each of the above methods is about 1/900 whenthe arcs AB and AE in Figs. 1 and 2 respectively are 60°, andvaries as the fourth power of the angle so that the error at 30° / equals the length of the jib from the mast to the extreme end is about 1/14400, the line being shorter than the arc. 11 12 AMERICAN ENGINEER AND RAILROAD ALL-STEEL SUBURBAN CAR—LONG ISLAND RAILROAD. ALL-STEEL SUBURBAN CARS. Long Island Railroad. The Long Island Railroad is putting into service the order offifty all-steel suburban cars, which it recently received fromthe American Car and Foundry Company. These cars representthe latest development in equipment of this class and are excel-lent in every particular. While they were designed for and caneasily be adapted to electric service, they are for the present tobe used in steam service and are being operated out of the LongIsland City terminal. As can be seen by the illustrations, they are of the standarddesign for all-steel passenger equipment adopted about a yearand a half ago by the Pennsylvania Railroad, which was de-scribed and illustrated in the June and July, 1907, numbers of thisjournal. Reference can be made to those issues for drawingsand photographs of all details. The theory on which the de- signs were based has been fully treated in the series of articlesmi Steel Passeng
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
