. Canadian machinery and metalworking (January-June 1913). otherwork is given in Fig. 3. The position of the power-station isshown in Fig. 1, while details of its con-struction are given in Figs. 4 and 5. Station Arrangement. The general arrangement of the sta-tion, and the passages through whichthe water reaches and leaves the tur-bines, will be clearly seen from Figs. 4and 5. The water enters the wheel-pitsthrough inlets, 16 ft. by 20 ft., whichhave rounded piers between them, andpasses on its way through the screens,45 ft. long and set in a slope as screens are made in 7-ft. bays,
. Canadian machinery and metalworking (January-June 1913). otherwork is given in Fig. 3. The position of the power-station isshown in Fig. 1, while details of its con-struction are given in Figs. 4 and 5. Station Arrangement. The general arrangement of the sta-tion, and the passages through whichthe water reaches and leaves the tur-bines, will be clearly seen from Figs. 4and 5. The water enters the wheel-pitsthrough inlets, 16 ft. by 20 ft., whichhave rounded piers between them, andpasses on its way through the screens,45 ft. long and set in a slope as screens are made in 7-ft. bays, andare supported by sets of three struts,which are attached to a common foot-plate. This arrangement was adoptedas offering the minimum of resistance tothe flowing water. The head-gates aresituated between the racks and thewheel-pits. They are made with a steelframework covered with pine turbine exhaust-passages are 10 15 ft., of oval section at the point ofintersection with the turbine-pit floor,and expand to 13 ft. by 23 ft. at the. FIG. 2. VIEW OF SCREENS. The building, which is constructed al-most entirely of concrete and steel, hasits foundations directly on the naturalgranite which forms the site. On itsnorth side an upward sloping reinforcedconcrete apron has been built on a seriesof supporting walls. This apron, whichis 18 in. thick, serves to control the di-rection of the water in its path into thestation, and in addition acts as a gravitydam. The water screens are carriedabove this apron, as shown in Fig. 5. Aview of these screens is also given in , The apron is tied to the wheel-pitson its south side, and these in turn areconnected up to the tailrace walls. Thewheel-pits, galleries and roofs of thebuilding are made of reinforced con-crete. The main walls are of plain con-crete. point of outlet. As the head underwhich the turbines work is of moderateheight only, a very large- amount ofwater has to be dealt with, and consid-erable attention wa
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectmachinery, bookyear19
