<br><p><b>Identifier</b>: americanengineer68newy (<a class="external text" href="https://commons.wikimedia.org/w/index.php?title=Special%3ASearch&amp;profile=default&amp;fulltext=Search&amp;search=insource%3A%2Famericanengineer68newy%2F">find matches</a>)<br><b>Title</b>: <a rel="nofollow" class="external text" href="https://www.flickr.com/photos/internetarchivebookimages/tags/bookidamericanengineer68newy">American engineer and railroad journal</a><br><b>Year</b>: <a rel="nofollow" class="external text" href="https://www.flickr.com/photos/internetarchivebookimages/tags/bookyear1893">1893</a> (<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/internetarchivebookimages/tags/bookdecade1890">1890s</a>)<br><b>Authors</b>: <br><b>Subjects</b>:  <a rel="nofollow" class="external text" href="https://www.flickr.com/photos/internetarchivebookimages/tags/booksubjectRailroad_engineering">Railroad engineering</a> <a rel="nofollow" class="external text" href="https://www.flickr.com/photos/internetarchivebookimages/tags/booksubjectEngineering">Engineering</a> <a rel="nofollow" class="external text" href="https://www.flickr.com/photos/internetarchivebookimages/tags/booksubjectRailroads">Railroads</a> <a rel="nofollow" class="external text" href="https://www.flickr.com/photos/internetarchivebookimages/tags/booksubjectRailroad_cars">Railroad cars</a><br><b>Publisher</b>:  <a rel="nofollow" class="external text" href="https://www.flickr.com/photos/internetarchivebookimages/tags/bookpublisherNew_York___M_N__Forney">New York : M.N. Forney</a><br><b>Contributing Library</b>:  <a rel="nofollow" class="external text" href="https://www.flickr.com/photos/internetarchivebookimages/tags/bookcontributorCarnegie_Library_of_Pittsburgh">Carnegie Library of Pittsburgh</a><br><b>Digitizing Sponsor</b>:  <a rel="nofollow" class="external text" href="https://www.flickr.com/photos/internetarchivebookimages/tags/booksponsorLyrasis_Members_and_Sloan_Foundation">Lyrasis Members and Sloan Foundation</a><br><br><b>View Book Page</b>: <a rel="nofollow" class="external text" href="https://archive.org/stream/americanengineer68newy/americanengineer68newy#page/n42/mode/1up">Book Viewer</a><br><b>About This Book</b>: <a rel="nofollow" class="external text" href="https://archive.org/details/americanengineer68newy">Catalog Entry</a><br><b>View All Images</b>: <a rel="nofollow" class="external text" href="https://www.flickr.com/photos/internetarchivebookimages/tags/bookidamericanengineer68newy">All Images From Book</a><br>
Click here to <a rel="nofollow" class="external text" href="https://archive.org/stream/americanengineer68newy/americanengineer68newy#page/n42/mode/1up"><b>view book online</b></a> to see this illustration in context in a browseable online version of this book.<br><br><b>Text Appearing Before Image:</b><br><i>made only by means of The main tunnel is designed for double track ; it will re-quire 1,272,000 cub. yards of cutting and 352,600 cub. yardsof masonry. The motive power for the air compressors, ven-tilators, etc.—about 1.000 H.P.—can be got from mountainrivers, which on the southern side give a minimum discharge of100 cub. ft. per second, and on the northern side 170 cub. ft.per second. This discharge, combined with the slope of theserivers. 5 to 7 per cent., can furnish the required molive poweron each side. The northern mountain section, from the northern portal tothe ICambilavka station, is 35 miles long, and its maximumgrade is 3.8 per cent. From the northern portal of the maintunnel the line descends the canon of the river Assa, the slopeof which, on its first 7 miles, considerably surpasses the maxi-mum grade f the line. Therefore the same must be length-ened by 22,603 ft. ; and as the cation is very narrow and tortu-ous there, many deep cuttings, tunnels and retaining walls</i><br><b>Text Appearing After Image:</b><br><i>z o oEdZZ O o « &lt;! P&lt;O «&lt; CO &lt;:o 1 toZ E-iO az 3 6.O I 30 THE AMERICAN ENGINEER (January, 1894. have been designed. The neighboring mountains consist ofmore strong paleozoic argillous slate (schist), crossed bymany crystalline layers. From the estuary of Nelka River (inAssa) the valley of Assa becomes larger, ami its slope is less111.111 the maximum grade of the line, so that the location islaid on the bottom of the valley. Near Targim station theregion of Touraic limestones begins, and is crossed by AssaRiver, which has nil a narrow for itself. From the followingStation (Falkii the line was studied in many directions, fromwhich that going through Tarska was selected. This line begins with Tarska tunnel, 4.05 miles long, with amiddle level and two grades—1.1 per cent, to the eastern portal(3,192 ft high) and 0.5 per cent, to the western portal (3,255ft. high). The height of the middle level is 3,306 ft., and thatof the summit 1,925 ft. From this tunnel the line enters</i><br><br><b>Note About Images</b><br></p>
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<ul><li>Source book page: <a rel="nofollow" class="external free" href="https://archive.org/stream/americanengineer68newy/americanengineer68newy#page/n42/mode/1up">https://archive.org/stream/americanengineer68newy/americanengineer68newy#page/n42/mode/1up</a></li></ul>