. American engineer and railroad journal . ,., of an excellent quality, the whole of the jointed mass wasremoved until perfectly sound rock was obtained for thefull width of the foundation, which occurred at a depth of50 ft. The founds were stepped up toward the south, andgood rock was met with until close to the junction of thesmall reverse curve with the main curve of the dam, whereit dropped suddenly and was replaced by a soft red had to be excavated for a depth of 30 ft. before a re-liable foundation could be obtained ; from this point tothe end sound rock was found compa
. American engineer and railroad journal . ,., of an excellent quality, the whole of the jointed mass wasremoved until perfectly sound rock was obtained for thefull width of the foundation, which occurred at a depth of50 ft. The founds were stepped up toward the south, andgood rock was met with until close to the junction of thesmall reverse curve with the main curve of the dam, whereit dropped suddenly and was replaced by a soft red had to be excavated for a depth of 30 ft. before a re-liable foundation could be obtained ; from this point tothe end sound rock was found comparatively close to thesurface. In the original design it was proposed to con-struct only one waste weir on the south bank, the lengthextending to the small reverse curve above referred existence, however, of the soft red rock in this por-tion, where the overfall would have been very great, neces-sitated an alteration in the design, which has proved to bealso a great improvement. The south weir was shortenedso as to confine the overf
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
