A LEVELLING PARTY
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Description
Identifier: ourironroads00will Title: https://www.flickr.com/photos/internetarchivebookimages/tags/bookidourironroads00will">Our iron roads: their history, construction and administration Year: https://www.flickr.com/photos/internetarchivebookimages/tags/bookyear1883">1883 (https://www.flickr.com/photos/internetarchivebookimages/tags/bookdecade1880">1880s) Authors: https://www.flickr.com/photos/internetarchivebookimages/tags/bookauthorWilliams__Frederick_Smeeton__1829_1886">Williams, Frederick Smeeton, 1829-1886 Subjects: https://www.flickr.com/photos/internetarchivebookimages/tags/booksubjectRailroads____History">Railroads -- History https://www.flickr.com/photos/internetarchivebookimages/tags/booksubjectRailroads____Great_Britain">Railroads -- Great Britain Publisher: https://www.flickr.com/photos/internetarchivebookimages/tags/bookpublisherLondon___Bemrose___sons">London : Bemrose & sons Contributing Library: https://www.flickr.com/photos/internetarchivebookimages/tags/bookcontributorUniversity_of_California_Libraries">University of California Libraries Digitizing Sponsor: https://www.flickr.com/photos/internetarchivebookimages/tags/booksponsorMSN">MSN View Book Page: https://archive.org/stream/ourironroads00will/ourironroads00will#page/n84/mode/1up" rel="noreferrer nofollow">Book Viewer About This Book: https://archive.org/details/ourironroads00will" rel="noreferrer nofollow">Catalog Entry View All Images: https://www.flickr.com/photos/internetarchivebookimages/tags/bookidourironroads00will">All Images From Book Click here to https://archive.org/stream/ourironroads00will/ourironroads00will#page/n84/mode/1up" rel="noreferrer nofollow">view book online to see this illustration in context in a browseable online version of this book. Text Appearing Before Image: ould construct a railway fartherin that direction, and that the project must be abandoned. Inless, however, than two years, a country surveyor producedplans of a line which, without a tunnel, or any other workof special difficulty, except a long climb up and over the hill SURVEYING AND LEVELLING. 6; of Shap, runs to Carlisle and on to Scotland by the westernside of the island. Having completed his observations, and collected the infor-mation of his assistants, the engineer sums up the evidence, andmarks out the route which the line shall take ; and few are theinstances in which the decisions thus arrived at have been opento subsequent impeachment. Rivers and streams are crossedas near their sources as possible ; hills and valleys are skirted ;towns and places where land is expensive are cautiously ap-proached ; pleasure grounds and gentlemens seats are avoided ;and a general estimate is made for setting off the amount ofcuttings or embankments as nearly as possible against oneanother. Text Appearing After Image: A LEVELLING PARTY. The route of the line must now be surveyed and levelled withthe utmost precision. Surveying may be described as the artof determining the form and dimensions of tracts of ground,with any objects that may exist thereupon. A representationon paper is made of all these objects, and also a delineation ofthe slopes of the hills, as the whole would appear if projected ona horizontal plane. The ground has also to be levelled in orderthat it may be ascertained how much higher or lower is anygiven point on the surface of the earth from any other. Theengineer is thus able to adopt measures for reducing the wholeof the new line to a level, or to such gradients as may bedeemed most expedient to adopt. F 66 OUR [RON koads. The wmk o( surveying and levelling for railways has oftenbeen attended with no small difficulty, apart from the naturalobstacles to be encountered. The annoyance felt by the ownersof pleasure grounds at the invasion, or even the immediateproximity, o\ railways Note About Images Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work. -
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Link: https://www.flickr.com/photos/126377022@N07/14759938142/
Resource type: Image
Added by: Simon Cotterill
Last modified: 3 years, 9 months ago
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Picture Taken: 1883-01-01T00:00:00 -
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