. The railroad and engineering journal . opresent driving shaft. The pump situated on the 500-ft. levelwill be driven by an 80 H. P. Pelton wheel directly entire plant has been planned to connect with the machineryalready in use and now operated by steam. It is expected that the operating expenses of the company will be reduced fully50 per cent., when the new power station is in running order.—Industry, San Francisco. A Tall Chimney.—The accompanying illustrations, fromLe Genie Civil, show one of the tallest chimneys in the world,its height being exceeded only by six others now in e
. The railroad and engineering journal . opresent driving shaft. The pump situated on the 500-ft. levelwill be driven by an 80 H. P. Pelton wheel directly entire plant has been planned to connect with the machineryalready in use and now operated by steam. It is expected that the operating expenses of the company will be reduced fully50 per cent., when the new power station is in running order.—Industry, San Francisco. A Tall Chimney.—The accompanying illustrations, fromLe Genie Civil, show one of the tallest chimneys in the world,its height being exceeded only by six others now in is a central chimney prcvided for the forges at the NavalSteel Works, at St. Chamond, France. This chimney has theadvantage of being founded upon a rocky base which is therefound at only a short distance below the surface. Its heightabove the surface of the ground is 100 m. (32S ft.). The generaldesign and the division into sections are shown in the illustra-tions in which the dimensions are given in meters. Fig. i is an. elevation ; fig. 2 a section ; fig. 3 a cross-section on the lineA B, fig. I ; fig. 4 is a plan of the foundation, and fig. 5 a planof the top or coping. Figs. 3, 4 and 5 are on a larger scalethan figs. I and 2. The chimney is octagonal in shape, asshown in the drawings. The general dimensions are as fol-lows ; Height from the surface of the ground 100 m. (328 ft.) ;exterior diameter at the base m. ( ft.) ; at the m. ( ft.) ; interior diameter at the base m. () ; at the summit m. (8 86 ft.) ; thickness of wall at thebase m. ( ft.) ; at the summit m. ( ft.). Theratio of the diameter to the height is i to 135. The calculatedstability for the highest wind pressure which can be expected inthat region is , the normal stability just sufl^cient to resistthe wind being assumed at I. This chimney has been builtwith great care as to material and construction, and is certainlyvery gracefu
Size: 984px × 2540px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, booksubjectrailroa, bookyear1887
