Chicago : Engineering and Contracting Pub. Co. · leaf 183
rinkled over each box for the purpose ofwetting the ballast and roadbed materials toinduce settlement and possibly to producepumping track, but the latter never developed.A careful record was kept showing when thewater was applied and of the amount in itsequivalent in inches of rainfall. While the… … Sketch Showing Arrangement for TestingNecessary Depth of Ballast. upon the two ties in each of the three boxes. A series of five tests has been completed;the first one beginning on Sept. 2, 1908, andthe last one ending on Aug. 2, 1910. TEST NO. 1. In filling the boxes for the first test it…
Buildings
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
