Identifier: streetrailwayjo241904newy (find matches)
Title: The Street railway journal
Year: 1884 (1880s)
Authors:
Subjects: Street-railroads Electric railroads Transportation
Publisher: New York : McGraw Pub. Co.
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
andthe top of each chimney is located 225 ft. above the grate bars.Each chimney will serve the twelve boilers which form thesection of which it is the center. To provide for overloadcapacity which may be demanded by future conditions, a forceddraft system is provided for, as will be described later. As stated elsewhere, the chimneys are all supported on thesteel structure of the building on a platform which is placedat an elevation of 76 ft. above the basement floor and 63 ft.above the grates. The supporting platforms are, in each case,carried on six of the building columns, and each platform iscomposed of single-web plate girders, well braced and sur-mounted by a grillage of 20-in. beams. The grillage is filledsolidly with concrete and flushed smooth on top to receive thebrick work of the chimney. The top of each chimney is 162 ft. above the top of the sup-porting platform, and each weighs 1200 tons. The octagonalbase is of red brick, this being carried to a height of 32 ft. 6 ins.,
Text Appearing After Image:
October 8, 1904.) STREET RAILWAY JOURNAL. 607 at which point the circular section of radial hrick begins. Theoutside diameter of the round shaft at its bottom starting pointis 21 ft. n$i ins., and it tapers to an outside diameter, at thetop, of 16 ft. S/i ins-- tne sides thus having a batter of about2y2 ins. in 10 ft. This large batter was preferred in order toobtain as much stability as possible in connection with themethod of supporting the chimney. The thickness of the radialbrick work at the bottom is 24 ins., decreasing in eight verticalsections, to a thickness of 8^ ins. at the top. Above the roofof the boiler house the exposed face brick on the chimney isof a light gray color, corresponding in color to the facades ofthe building. The octagonal base of the chimney is of hard-burned redbrick 3 ft. in thickness between the side of the octagon and theinterior circular section. The brick work is started from thetop of the grillage platform within a steel channel curb. 3 ft. indepth,

Note About Images