. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . STEEL rNDERFR.\ME E(1K S.^.iXXI & Hudson Co. the hoppers, which brought it at the cen-ter of the car. The bolsters are set 27 ft. 5^1 in. apartfrom center to center for the car and the whole framing is 37ft 1154 in. long. The bolsters for the nels weighing 30 lbs. to the foot, with a54 in. cover plate. This gives a sectionalarea through the sills of sq. in., or alittle below the M. C. B. requirements forcars. As a matter of fact, these si
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . STEEL rNDERFR.\ME E(1K S.^.iXXI & Hudson Co. the hoppers, which brought it at the cen-ter of the car. The bolsters are set 27 ft. 5^1 in. apartfrom center to center for the car and the whole framing is 37ft 1154 in. long. The bolsters for the nels weighing 30 lbs. to the foot, with a54 in. cover plate. This gives a sectionalarea through the sills of sq. in., or alittle below the M. C. B. requirements forcars. As a matter of fact, these sills arestronger in proportion to the work they through the car. This is considered Iqrthe designers a better method of locatingthese braces than to run them from thecorners of the car to the connection ofthe center sills with the bolster, a matterthat will he more fullv discussed in an-. STEEL UNDERFR.^ME FOR ST.\NDARD & Hudson Co. 60,(K)t) lbs. capacity cars are 23 ft. 10 bolster centers and the frame is34 ft. long over the end sills. This shorterlength serves to stiffen the frame some-what under the vertical loads as comparedwith the higher capacity cars and partially have to do than are the car sills. Thecar sills are called upon to withstand notonly the rough treatment of the yards, buthe shocks due to the closing of the trainswhen brakes are released; while the ca-boose sills have simply to stand up against other articles published at an early will also be seen that the caboosebolsters are given considerably morelongitudinal strength in a line with thebuffing stresses than the car bolsters. Inthe latter the cover plates are straight September, 1919 RAILWAY AND LOCOMOTIVE ENGINEERING 269 from end to end and are 12 in. wide, whileon the caboose they are 18 in. wide for thefull width of the center sills and taperdown to 12 in.
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