. The Street railway journal . SOME TYPICAL OVERHEAD CONSTRUCTION, PORTSMOUTH. TRACK WORK IN FRONT OF TOWN HALL, PORTSMOUTH 36 [Vol. XIX. No. i. the tracks. In a few cases, however, such as in front ofthe town hall, center poles have been used with a very ef-fective result. Over noo poles have been employed,weighing respectively 800 lbs., 1200 lbs., and 1600 lbs. A No. 00 B. & S. trolley wire is used, divided up in sec-tions not exceeding one-half mile. The system is fed bymeans of fourteen feeders, the longest being 14,000 ft. andthe shortest about 400 ft. For the most part they aredrawn in c
. The Street railway journal . SOME TYPICAL OVERHEAD CONSTRUCTION, PORTSMOUTH. TRACK WORK IN FRONT OF TOWN HALL, PORTSMOUTH 36 [Vol. XIX. No. i. the tracks. In a few cases, however, such as in front ofthe town hall, center poles have been used with a very ef-fective result. Over noo poles have been employed,weighing respectively 800 lbs., 1200 lbs., and 1600 lbs. A No. 00 B. & S. trolley wire is used, divided up in sec-tions not exceeding one-half mile. The system is fed bymeans of fourteen feeders, the longest being 14,000 ft. andthe shortest about 400 ft. For the most part they aredrawn in conduits, a small portion, however, being laid onthe solid system. THE STEAM PLANT AND AUXILIARY APPARATUS The steam plant comprises three boilers of the water-tube type, each of which is capable of evaporating, under normal conditions, with an overload capacity of 450 ihprunning under the same conditions as the larger machine. The following are the principal dimensions of the en-gines : In the two larger sizes the diameter of high-pres-sure cylinder is 18 ins., low pres
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
