The Construction of Mill Dams: Comprising Also the Building of Race and Reservoir Embankments and Head Gates, the Measurement of Streams, Gauging of Water Supply, &cJames Leffel & Company, 1874 - 336 páginas |
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The Construction of Mill Dams: Comprising Also the Building of Race and ... Leffel James [and] Co Sin vista previa disponible - 2013 |
Términos y frases comunes
12 feet 12 inches square abutments angle apron bank base beveled bolted braces brush builder built canal cap-sill CHAPTER clay coffer construction course covering crest crib cross-sills depth described distance driven durability eight feet embankment engraving extending face feet high feet long feet wide filling firmly foot foundation sills FRAME DAM freshet front gates gauge give gravel head-gate hight illustrated inches in diameter inches thick iron JAMES LEFFEL KANSAS RIVER laid layer lengthwise loam lower end manner MANUFACTURERS material mill mortised notch pinned placed planks plate posts present protection quicksand race rafters reliable structure render resting rip-rap river rock bottom sand secured sheet piling shown six feet slope solid spiked spiling stone stream-sills strength structure sufficient surface tier TIMBER DAM timbers tion up-stream mud-sill up-stream side upper end upper side wall washing water power water wheel weir width wing
Pasajes populares
Página 320 - QC A New, Revised, and considerably Enlarged Edition (the 6th), with very numerous Illustrations. 4s. 6d. cloth limp; 5s. 6d. cloth boards, gilt. 82. THE POWER OF WATER, as applied to drive Flour Mills, and to give motion to Turbines and other Hydrostatic Engines.
Página 326 - EDITION. Entirely rewritten by the ablest writers on every subject. Printed from new type, and illustrated with Several Thousand Engravings and Maps. THE work originally published under the title of THE NEW...
Página 143 - ... (the periodical wind which blows half the year in one direction and the other half in the opposite, and which in the Indian Ocean blows from the southwest from April to October, bringing heavy rains, after which it changes to the northeast for the rest of the year) was nearly ten feet lower than usual.
Página 281 - ... subject to variation according to circumstances ; but the rule ordinarily adopted is to make the crown from 3 to 5 feet above high-water mark. The breadth of crown is still more variable, ranging in different localities from 3 feet to 12 feet or more, the latter being an exceptional figure. CHAPTER XLV. RACE AND RESERVOIR EMBANKMENTS— (Continued). The necessity of adapting the slope of an embankment, especially on the water side, to the disturbing causes which will operate upon it, and the...
Página 312 - ... may be accurately gauged by their flow through the same notch. The reason of this is obvious, from considering that in the triangular notch, when the quantity flowing is very small, the flow is confined to a small space admitting of accurate measurement ; and that the space for the flow of water increases as the quantity to be measured increases, but still continues such as to admit of accurate measurement.
Página 304 - ... at each end. Cut a notch in the board sufficient in depth to pass all the water to be measured, and not more than two-thirds of the width of the stream in length. The bottom of notch B in the...
Página 320 - Translated from the fourth augmented and improved German edition, by ECKLEY B. COXE, AM, Mining Engineer. Vol.
Página 312 - They are, however, but ill adapted for the measurement of very variable quantities of water, such as commonly occur to the engineer to be gauged in rivers and streams. If the rectangular notch is to be made wide enough to allow the water to pass in flood times, it must be so wide that for long periods, in moderately dry weather, the water flows so shallow over its crest, that its indications cannot be relied on. To remove in some degree this objection, gauges for...
Página 122 - ... rubble" or small boulders underneath the flags. Live moss is packed between the flag stones to prevent the silt being driven through. At the foot of the dam is another row of sheet piling, similarly supported, and protected by a fir plank at top from the action of the water. Over the layer of rubble is placed a row of regular stones, laid endwise and leaning, so as to be perfectly secure from derangement by floods. In the up-stream direction from the crest of the dam is also placed a layer of...
Página 308 - E, 5£ inches deep ; in the first or last column find the figure 5, follow the horizontal column, until the perpendicular column is reached containing ^ at the top. In the square where these two columns meet will be found (5.18) five and eighteen hundredths cubic feet ; this is the quantity of water that...