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File:Building and repairing railways - Forming one of the series of the volumes comprised in the Revised and enlarged edition of The science of railways, (1906) (14761027722).jpg

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Identifier: buildingrepairin01kirk (find matches)
Title: Building and repairing railways ... : Forming one of the series of the volumes comprised in the Revised and enlarged edition of The science of railways,
Year: 1906 (1900s)
Authors: Kirkman, Marshall M. (Marshall Monroe), 1842-1921
Subjects: Railroads
Publisher: New York and Chicago : The World railway publishing co.
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress

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ooos* oooss ooo9a ^ OOOSl o H W EH o > I—1 o ooo Q O« o O :?; o w c/:(/)K 640 APPENDIX H. 8 i ^ S S2 % ►H OO
Text Appearing After Image:
«i APPENDIX H. 641 Vertical curves are required on summits at all grade inter-sections not less than 50 feet in length for each charge ofone-tenth in rate of grade. In sags the rate of change should not exceed 0.05 feetper station. In theory, the rate of change should be such asto maintain equality between the rolling resistance and theacceleration of gravity of each car throughout the varyingrates of speed. RULING GRADES. Grades which limit the maximum weights and length oftrains, are termed Ruling Grades. Maximum grades, whichmay be operated by heavier engines, or by assistant engines,are not necessarily ruling grades. The economic value of changes in rates of grades is deter-mined by the relative total cost and number of trains, requiredon each rate of grade to transport the same number of carsand tons. The practical rule is as follows: Multiply the dailynumber of trains saved or added by the ascertained cost pertrain-mile, by the length of the division in miles, and by thenumber

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  • bookid:buildingrepairin01kirk
  • bookyear:1906
  • bookdecade:1900
  • bookcentury:1900
  • bookauthor:Kirkman__Marshall_M___Marshall_Monroe___1842_1921
  • booksubject:Railroads
  • bookpublisher:New_York_and_Chicago___The_World_railway_publishing_co_
  • bookcontributor:The_Library_of_Congress
  • booksponsor:The_Library_of_Congress
  • bookleafnumber:647
  • bookcollection:library_of_congress
  • bookcollection:americana
Flickr posted date
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27 July 2014


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current22:03, 4 December 2017Thumbnail for version as of 22:03, 4 December 20172,048 × 1,668 (549 KB)SteinsplitterBot (talk | contribs)Bot: Image rotated by 90°
17:04, 6 October 2015Thumbnail for version as of 17:04, 6 October 20151,668 × 2,048 (540 KB)Fæ (talk | contribs)== {{int:filedesc}} == {{information |description={{en|1=<br> '''Identifier''': buildingrepairin01kirk ([https://commons.wikimedia.org/w/index.php?title=Special%3ASearch&profile=default&fulltext=Search&search=insource%3A%2Fbuildingrepairin01kirk%2F fin...

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