. Railway maintenance engineering, with notes on construction . preferred fora cross-erecting shop in connection with a hght overhead crane,but at large shops the engines in most cases are transferredinside the building by a heavy overhead travehng crane. Recentpractice, both in this country and abroad, appears to favor thecross shop rather than the longitudinal. In the power house are located the boilers for heating theshops, the air compressors and the generators for supplying theelectric current used for Hghting and to operate the machineryin the different shops. The most modern practice is


. Railway maintenance engineering, with notes on construction . preferred fora cross-erecting shop in connection with a hght overhead crane,but at large shops the engines in most cases are transferredinside the building by a heavy overhead travehng crane. Recentpractice, both in this country and abroad, appears to favor thecross shop rather than the longitudinal. In the power house are located the boilers for heating theshops, the air compressors and the generators for supplying theelectric current used for Hghting and to operate the machineryin the different shops. The most modern practice is to use groupdrive, except in case of large machines, which are pro\4dedwith separate motors. * American Railway Shop Systems, W. G. Berg, 1904. The RailroadGazette, New York, pp. 120, 142. SHOPS AND ENGINE HOUSES 283 The shop buildings are one-story structures and may be builtof either mill construction, structural steel or concrete. In theirdesign careful attention should be given to the question of pro- 20 stall Round Hquse Depressed P/f. Machine 8c Erecfing Truck. Tank CtBoileir A. New York Central Shops, Oak Grove, Pa.


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Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyo, bookyear1915