 | 1909 - 834 Seiten
...plans, is not to be merely superposed upon the surface as originally proposed in 1905. Embedded in its earthy mass there is to be a puddled core, and a trench...+90; that is to say, 5 feet above the level of the lake, which is to be 85 feet above sea. The crest of the dam will be +135 feet, ie 50 feet above the... | |
 | 1909 - 822 Seiten
...sheet-piling, made of 4-inch timbers, is to be driven down for another 40 feet, so that sheet- piling and puddled core together will form an impervious...+90; that is to say, 5 feet above the level of the lake, which is to be 85 feet above sea. The crest of the dam will be +185 feet, ie 50 feet above the... | |
 | Vaughan Cornish - 1909 - 268 Seiten
...sheet piling, made of 4-inch timbers, is to be driven down for another 40 feet, so that sheet piling and puddled core together will form an impervious...90, that is to say, 5 feet above the level of the lake, which is to be 85 feet above sea. The crest of the dam will be + 135 feet, ie, 50 feet above... | |
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... feet below the sea ( — 40 feet) for the lower part of this core. Nor is this all that is to be done to check seepage beneath the earthen dam. From the bottom of the trench excavated for the puddled core, sheet-piling, made of 4-inch timbers, is... 