Principles and Practice of Embanking Lands from River-floods, as Applied to "levees" of the MississippiD. Van Nostrand, 1878 - 171 páginas |
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Página 28
... resistance of a river - bed is higher for higher velocities than for lower ; varying , according to the observations and deduc- tions of M. Eytelwein , as the rate of the square of the velocity . Such are the general facts of fall and ...
... resistance of a river - bed is higher for higher velocities than for lower ; varying , according to the observations and deduc- tions of M. Eytelwein , as the rate of the square of the velocity . Such are the general facts of fall and ...
Página 30
... resistance to flow , involves directly an increase in the rate of flow . This , combined with the mechanical impulse of the tributary volume , must , by accelerating the velocity , make the increase of depth proportionally less than the ...
... resistance to flow , involves directly an increase in the rate of flow . This , combined with the mechanical impulse of the tributary volume , must , by accelerating the velocity , make the increase of depth proportionally less than the ...
Página 33
... resistance combines within it all those impedi- ments involving impact ; and for whatever part of the cross - section of the flow is engaged in this impact , varies as the weight of that cross - section multiplied by the square of the ...
... resistance combines within it all those impedi- ments involving impact ; and for whatever part of the cross - section of the flow is engaged in this impact , varies as the weight of that cross - section multiplied by the square of the ...
Página 48
... resistances running up thus rapidly for every increase of current or shortening of channel - the point is soon reached by such shortening , where steam - power becomes totally absorbed . Thus then , do Cut - offs endanger the ...
... resistances running up thus rapidly for every increase of current or shortening of channel - the point is soon reached by such shortening , where steam - power becomes totally absorbed . Thus then , do Cut - offs endanger the ...
Página 49
... resistances to embarras , and under circumstances perfectly supposable , even to exclude navigation . Every impediment to navigation involves an addi- tion to the cost of shipment ; and hence do the planters who seek relief from a Cut ...
... resistances to embarras , and under circumstances perfectly supposable , even to exclude navigation . Every impediment to navigation involves an addi- tion to the cost of shipment ; and hence do the planters who seek relief from a Cut ...
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Términos y frases comunes
12 feet angles of repose applicable Areas in square arithmetical mean Arkansas average height bank bayou Cairo calculation caving channel Civil Engineer clay Cloth Coahoma Coahoma County Commissioner considerations construction County Cubic yards corresponding Cut-off debouch decimal Delta depth distance down-stream drainage earth Edition elevation embankments End areas end-heights extent fact feet wide flood flood-level flood-water flow foot foundation friction greater end Hewson High Water Mark Hypsometry Illustrated inches increased Lake Levee loam material measurement-book ment middle area Mississippi River muck ditch necessity observed Orleans overflow piles practice present pressure prismoidal prismoidal formula proper quantity rate of fall remarks resistance result sand sectional area side square feet standing angle stream strength sum of widths survey tions Tunica Tunica County U. S. Navy up-stream Valley velocity volume water-banks wet slope whole number width of base width of crown WILLIAM HEWSON wood-cuts Yazoo
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