. Electric railway journal . portions of the machineshop, such as the wheel room and the smith shop, which are struction of the roof covering proper, the details of gutters,flashings and leader connections. Leaky roofs are mostannoying. For any railway structure, where the roof isreasonably flat and simple, a built-up covering of felt, pitchand gravel—taking first cost and up-keep cost into considera-tion—is the most satisfactory. Fig. 5 shows the general arrangement of an approved car-house roof. The gutters are all formed by parapet walls. Asthe trusses pitch in one direction, only one gutte
. Electric railway journal . portions of the machineshop, such as the wheel room and the smith shop, which are struction of the roof covering proper, the details of gutters,flashings and leader connections. Leaky roofs are mostannoying. For any railway structure, where the roof isreasonably flat and simple, a built-up covering of felt, pitchand gravel—taking first cost and up-keep cost into considera-tion—is the most satisfactory. Fig. 5 shows the general arrangement of an approved car-house roof. The gutters are all formed by parapet walls. Asthe trusses pitch in one direction, only one gutter isrequired per bay and only one leader connection occurs every40 ft. along the length of the building. All flashings aroundthe skylights, gutters and conductors are 16-oz. copper. Thecap flashing laps over the base flashing not less than 6 order to bring the edge of the cap flashing to within 2 roof line. The base flashing, in all cases, laps not lessthan G in. on the roof. The cap flashing extends into the. Fig. 6—Buildings and Structures—Wooden SwingingDoors for Carhouse brick work not less than 1V2 in.; the back edges are turnedout at least % in., and are held with lead wedges not over 8in. on centers and joints between the metal and the walls,and are thoroughly cemented with elastic slaters cement. ENTRANCE DOORS FOR CAR HOUSES The maintenance of carhouse doors has always been abugbear to the operator, and the repairing of doors is aconstant source of expense and annoyance. At present twotypes of doors are mostly used—the ordinary wooden door, of October 13, 1911.] ELECTRIC RAILWAY JOURNAL. 825 wither swinging or sliding design, and the rolling steel is practicable satisfactorily to take care of the trolley wirefor either type by introducing a wooden circuit breaker atthe door opening. Pig. 6 illustrates a type of swinging door with a frame hungon cast-iron eyelets built into the wall. The doors showncost per opening 10 ft. by 16 ft., complet
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