File:The railroad and engineering journal (1887) (14758578505).jpg

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Identifier: railroadengineer63newy (find matches)
Title: The railroad and engineering journal
Year: 1887 (1880s)
Authors:
Subjects: Railroad engineering Engineering Railroads
Publisher: New York : M.N. Forney
Contributing Library: Carnegie Library of Pittsburgh
Digitizing Sponsor: Lyrasis Members and Sloan Foundation

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butment : 10 spans of 50 ft. clear = 500 ft. 4 ■■ 94i = 378 •■ 38 50 = 1,900 Total water-way = 2,778 ft. 10^ in thick = 43 ft. loj in thick on brick wells 12 ft. diam- eter = 1,0 0 \o\ in thick = 180 ■■ A\ Total space between abutments = 3,032 ft. 3 in. In this case the piers occupy a little more than 8 percent, of the total space between the abutments. Lastly, for the road bridge over the River Tone at Mae-bashi,* which I constructed with my friend, Mr. K.Shibuya, the following are the dimensions, measuring fromthe east abutment, the road level being 40 ft. aboveordinary water level: 2 spans of Howe truss, each 90 ft. = 180 ft.10 beam bridge 42 = 420 Total water-way = 600 ft. 2 cast-iron piers, 3 ft. diameter, with bracing of r ft. thick = 8 ft.10 wooden piers, 1.5 ft. diameter, with bracing of 7 ft. thick = 22 Total space between abutments =: 630 ft. * For a description of this bridge, see Railroad and Englmebring Jour-nal, April, 1887. Z6 THE RAILROADAND (January, l88g.
Text Appearing After Image:
Vol. LXIII, No. I.) ENGINEERING JOURNAL. 17 Thus the piers in this case occupy about 5 per cent,of the total space between abutments. As has been explained in the previous paragraphs, inobstructing a certain portion of water-way by piers, theriver has a tendency to compensate for its lost area by un-dermining the bed, so that it is often necessary to buildsome form of protection through the whole width of thebottom ; then every part shares the uniform resistance andthe current does not damage any one pier more than an-other. For this purpose 1 have constructed crib-works,fascine-works, stone pitchings, jakago (basket-works ofbamboo filled with stones), etc., round the pier and alsothrough the width of the river, which answered the pur-pose well. ♦ TWENTY-TON HYDRAULIC CRANE. (From Industries.) We illustrate herewith a hydraulic crane, constructedby Messrs. Stothert & Pitt, Limited, engineers, Bath, forthe State of Kattywar, India, which is capable of lifting 20tons through a hei

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  • bookid:railroadengineer63newy
  • bookyear:1887
  • bookdecade:1880
  • bookcentury:1800
  • booksubject:Railroad_engineering
  • booksubject:Engineering
  • booksubject:Railroads
  • bookpublisher:New_York___M_N__Forney
  • bookcontributor:Carnegie_Library_of_Pittsburgh
  • booksponsor:Lyrasis_Members_and_Sloan_Foundation
  • bookleafnumber:35
  • bookcollection:carnegie_lib_pittsburgh
  • bookcollection:americana
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27 July 2014
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