. Electric railway journal . Luzerne Carhouse—Pit Construction of overhead wires and poles in front of many carhouseshas been greatly simplified in this instance by the erectionat each end of the building of two steel towers which carrya transverse catenary for the suspension of the overheadwires. Despite the great length of the span, only two inter-mediate poles have been required at the front and but onepole at the rear. The special work at the entrance consistsof two ladders from the main line for thirty tracks, each ladder feeding five bays. Untidiness on the ground hasbeen minimized by pa
. Electric railway journal . Luzerne Carhouse—Pit Construction of overhead wires and poles in front of many carhouseshas been greatly simplified in this instance by the erectionat each end of the building of two steel towers which carrya transverse catenary for the suspension of the overheadwires. Despite the great length of the span, only two inter-mediate poles have been required at the front and but onepole at the rear. The special work at the entrance consistsof two ladders from the main line for thirty tracks, each ladder feeding five bays. Untidiness on the ground hasbeen minimized by paving all track entrances and exitswith hard-burned brick. Arc lamps which are suspendedfrom brackets over the track entrances maintain the at-tractiveness of the building at night, insure greater safetyin operation and keep prowlers off as well. METHOD OF CONSTRUCTION The carhouse was built in record time through the use ofthe Unit-Bilt reinforced concrete system of the Unit. Luzerne Carhouse—Detail, Showing Part of Arches andColumn; Also Top of Sand Outlet Construction Company, St. Louis, Mo. The superior speedof this form of concrete construction is due to the factthat the members can be cast on the ground long before theexcavations and footings are finished. As the quantitieshandled are comparatively small, the concrete may alsobe poured under ideal circumstances and the individualgirders, columns and floor slabs allowed to season forweeks before they become part of the building. Thus thepossibility of failure due to the premature removal offorms is avoided. The Philadelphia Rapid Transit Com-
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