. The Street railway journal . n the downstream side by a pipe. Both the pipes are provided with valves, andthat of the 60-in. pipe is water-operated. The 60-in. pen-stock is 8000 ft. in length, and it terminates in the cases ofthe turbines at the power house. The thickness of the pipesheets varies from J4 in. at the upper to y% in. at the lowerend, and both inside and out are coated with tar and lower part of the penstock is coated with cement, onthe inside, and the entire penstock is covered by an earthtrench which has a minimum depth of 15 ins. The pipe lineis lap weld
. The Street railway journal . n the downstream side by a pipe. Both the pipes are provided with valves, andthat of the 60-in. pipe is water-operated. The 60-in. pen-stock is 8000 ft. in length, and it terminates in the cases ofthe turbines at the power house. The thickness of the pipesheets varies from J4 in. at the upper to y% in. at the lowerend, and both inside and out are coated with tar and lower part of the penstock is coated with cement, onthe inside, and the entire penstock is covered by an earthtrench which has a minimum depth of 15 ins. The pipe lineis lap welded and double riveted in all seams toward thelatter end of the run, and it is lap welded with a single rowof rivets at the head of the run. An important feature of this plant is the large percentageof the available flow of the area drained which is natural flow of the stream itself is too small to be ofgreat value for all the year round use. The topographyof the country permits the storage of so much of the rainfall. FIG. 2.—RUTLAND RAILWAY, LIGHT & POWER COMPANYSPOWER HOUSE that after due allowance is made for evaporation and seepageenough remains to furnish ample power all the year Jan. 1, 1907, the old steam plant of the Rutland CityElectric Company will probably be thrown entirely out ofcommission. At present the railway load is the principalburden of the Mendon plant. The pipe line is carried along the side of the station,branches being taken in to the wheels. Water hammer is eliminated by the installation of a regulating tower 220 ft high,having a tank of sufficient capacity to relieve the wheels offluctuations of pressure in the pipe line. The tank is supportedby a steel tower mounted on concrete foundations, a standpipebeing carried up from the penstock to the tank. The tank is15 ft. in diameter and 50 ft. high, the riser pipe being 36 ins.
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
