. The Street railway journal . trusses. Amonitor built in the boilerroom roof affords properventilation. The floors of the buildingare all of concrete exceptthat under the northern por-tion of the engine room. Thisis temporarily of wood. Theboiler room rests directlyupon the ground. The con-crete floor of the engineroom, which is immediatelyover the basement, is 4 , and is built in between25-lb. 10-in. I-beams, placed 3 ft. 8 ins. apart. The basement floor is also of concrete. Asthe river frequently rises above the floor of the basement, thewalls are all waterproof. Any leakage taking
. The Street railway journal . trusses. Amonitor built in the boilerroom roof affords properventilation. The floors of the buildingare all of concrete exceptthat under the northern por-tion of the engine room. Thisis temporarily of wood. Theboiler room rests directlyupon the ground. The con-crete floor of the engineroom, which is immediatelyover the basement, is 4 , and is built in between25-lb. 10-in. I-beams, placed 3 ft. 8 ins. apart. The basement floor is also of concrete. Asthe river frequently rises above the floor of the basement, thewalls are all waterproof. Any leakage taking place will drainto a sump, from which it will be pumped through the con-denser water return mains to the river. The chimney was built by M. W. Kellogg & Company, of diameter, with walls 2oj4 ins. thick. The walls decrease inthickness by steps, and at the top, 165 ft. above the base, theyare 7^2 ins. thick. The bottom of the flue opening, whichmeasures 5 ft. 6 ins. wide x 9 ft. 3 ins. high, is 21 ft. 6 ins. abovethe
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
