. Electric railway journal . ric railway facilities in this important man-ufacturing city. The first two extensions installed are those to Miri steel poles. Throughout the city, villages and at turnoutsthe poles are of the Mannessmann tubular design, capableof supporting a load of 800 kg (1760 lb) at the , and particularly on short curves, a double T-beam 160 mm ( in.) wide is employed. The resultsgiven by the latter type of pole have been very pole spacing on tangents varies from 35 m to 54 m(115 ft. to 177 ft). All poles are set in concrete and have a
. Electric railway journal . ric railway facilities in this important man-ufacturing city. The first two extensions installed are those to Miri steel poles. Throughout the city, villages and at turnoutsthe poles are of the Mannessmann tubular design, capableof supporting a load of 800 kg (1760 lb) at the , and particularly on short curves, a double T-beam 160 mm ( in.) wide is employed. The resultsgiven by the latter type of pole have been very pole spacing on tangents varies from 35 m to 54 m(115 ft. to 177 ft). All poles are set in concrete and have aground connection to the rails. In general, the line con-struction is of the bracket design, with the bracket tubinginterchangeable with the topmost member of the Mannese-mann poles. Span wires are used at stations and sidings,but in a few cases the catenary is carried from light steelchannels, as illustrated. The messenger insulators are triple-petticoat porcelain,and before installation were subjected to a test with ^0,000. Lyons Single-Phase Tramways—Separator Constructionat Siding and Jons, and as the cars are operated through thecity, the equipment had to be designed for operationat 600 volts as well as for the potential of 6000 Miribel line is 12 km ( miles) long, of which 5 km( miles) are operated with direct current. It will be ex-tended eventually to Montlucl, which will give a totallength of 20 km ( miles), all on the highway. TheJons line is 21 km (13 miles) long, of which 6 km () are operated with direct current. This road is tobe extended to Saint-Bremaz, a town 60 km ( miles)from Lyons. Both of these lines are standard gage, singletrack and bonded with Chicago bonds of 50 sq. mm section. LINE CONSTRUCTION The overhead construction is carried from two types of Lyons Single-Phase Tramways—Passing from Sections volts. The messenger cable is of steel and the trolley offigure 8 copper of 50 sq. mm (100,000
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