. Electric railway journal . 1 ft. 2 72 ft. I 1-2 in. in over-all dimensions, with a machineryroom 32 ft. wide by 70 ft. long and 18 ft. 9 in. high to thelower side of the concrete roof beams. Crane girders areplaced I 7 ft. above the machinery room floor. The machinery room floor, which is made up of 1 2-in. re-inforced concrete floor slabs, was designed for 800-lb. liveload plus 50,000 lb. concentrated load on the main 18-in. X36-in. girders, which are spaced 14 ft. 1 1-2 in. betweencenters. The roof slab is 5 in. thick and is supported by con-crete girders with 32-ft. span. The side wa
. Electric railway journal . 1 ft. 2 72 ft. I 1-2 in. in over-all dimensions, with a machineryroom 32 ft. wide by 70 ft. long and 18 ft. 9 in. high to thelower side of the concrete roof beams. Crane girders areplaced I 7 ft. above the machinery room floor. The machinery room floor, which is made up of 1 2-in. re-inforced concrete floor slabs, was designed for 800-lb. liveload plus 50,000 lb. concentrated load on the main 18-in. X36-in. girders, which are spaced 14 ft. 1 1-2 in. betweencenters. The roof slab is 5 in. thick and is supported by con-crete girders with 32-ft. span. The side walls are 6 in. thick. As the construction of the Seattle-Everett Interurban lineprogresses the new substation at Ballard will be completedand another station will be built at Everett in which a 400-kwrailway unit will be installed. These stations at Ballard and 540 ELECTRIC RAILWAY JOURNAL. [Vol. XXXIV. No. 14. Everett will supply the ends of the interurban line and amotor-generator substation at Halls Lake, about halfway be-. If ii£ ! ! ! 1 ! ! !^P»i To T T t T T T To 000 V. Rj. Feeders EUotru Ry. Journal Seattle Electric Company—Wiring Diagram of NorthSeattle Substation tween the two cities, will feed the middle section of the caten-ary supported trolley now being erected. ...... TRAFFIC AND TRANSPORTATION FEA-TURES OF THE PUGET SOUNDELECTRIC RAILWAY connects Ta-and most inl-and attractive THE Puget Sound Electric Railwaycoma and Seattle, the two largestportant cities of the fast-growingPuget Sound district. Both termini are seaportswhich are favored with exceptional harbor facilities. Theroute of the interurban line between Tacoma and Seattle fol- ^SpnolngBar if Loops „,f^J< Rod3 Mj 24oirder8 Rods, %Dlam. W»ll-. Section showing Typical 25 Girder and Slab Reinforcement. % Rods$ Wire i. Lbjun sf Peuoltis, 1 Strands 4Spaolne,^U Wire
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