. The design of the Chicago and Northwestern Railway train shed . rain shed was square foot of the entire area covered, a weight which is aboutforty per cent less than the weight of metal in the ordinary higharch shed. This saving in material represented a large amountof money, when it is considered theit this shed has a roof area oftwo hundred and eight thousand, seven hundred and eighty five squarefeet. There is also a very material saving in the reduced costof erection, as the Lackawanna Train Shed was erected entirely bymeans of an ordinary derrick car, with no false work what
. The design of the Chicago and Northwestern Railway train shed . rain shed was square foot of the entire area covered, a weight which is aboutforty per cent less than the weight of metal in the ordinary higharch shed. This saving in material represented a large amountof money, when it is considered theit this shed has a roof area oftwo hundred and eight thousand, seven hundred and eighty five squarefeet. There is also a very material saving in the reduced costof erection, as the Lackawanna Train Shed was erected entirely bymeans of an ordinary derrick car, with no false work whatever, whilethe old type of shed, with its long high spans, has to be supportedon false work until the truss connections are made. The work oferection was also more easily carried on. In nearly every loca-tion, where a new train shed is built, it has to be erected on asite where passenger traffic is accommodated, and the handling ofstructural material on the high false work necessar?.^ for the oldtype of shed increased materially theliability of accidents to the. traveling public underneath. In erecting the Lackawanna TrainShed, it was necessary to take possession of only two tracks atany time while the work was in progress, and at no time was thesteel work handled over the traveling public The LackawannaTrain Shed also represents a great saving in the maintenance costof the steel work as compared with the old type of train is due to the fact that engine gases are discharged direcly intothe open air and do not come in contact with the steel work at practical advantage of the Bush Train Shed is that it canbe carried up to the face of the railroad station building, withoutinterfering with the light for the offices in the building. The Lackawanna Train Shed at Hoboken is noteworthy for itsexcellent light. On a sunshiny day the shadows of the columnssupporting the roof of the shed can be easily seen on the platforms,a circumstance that shows this shed to b e ve
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