Papers Upon the Supply of Water to TownsE. & F.N. Spon, 1865 - 53 sider |
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Resultat 1-5 av 17
Side 9
... soil , the declivity of the district , and the rate of evaporation . If the nature of the surface receiving the rainfall is naturally , or has been made artificially impervious , there will not be any absorption , and evaporation will ...
... soil , the declivity of the district , and the rate of evaporation . If the nature of the surface receiving the rainfall is naturally , or has been made artificially impervious , there will not be any absorption , and evaporation will ...
Side 10
... soil , the state of its cultivation , and its general contour , affect the results very much . Thus , if the land is uncultivated and ex- posed , it would , by the action of the sun and wind , be dried very quickly ; and when once the ...
... soil , the state of its cultivation , and its general contour , affect the results very much . Thus , if the land is uncultivated and ex- posed , it would , by the action of the sun and wind , be dried very quickly ; and when once the ...
Side 11
... soil . Thus in the sands of the red sandstone formation the rainfall is absorbed as fast as it touches the surface , and the same may be said of the rain falling in many places on the chalk formation , while upon the clay soils , or ...
... soil . Thus in the sands of the red sandstone formation the rainfall is absorbed as fast as it touches the surface , and the same may be said of the rain falling in many places on the chalk formation , while upon the clay soils , or ...
Side 16
... soil , natural configuration of the district , and the state of its cultivation . Having determined upon the amount of rainfall , which in all calculations for new works should be the minimum , we must next consider the various cir ...
... soil , natural configuration of the district , and the state of its cultivation . Having determined upon the amount of rainfall , which in all calculations for new works should be the minimum , we must next consider the various cir ...
Side 17
... soils , the channel must be of such size as to limit the velo- city of the current to a speed not exceding half a mile her hour ; otherwise , the bed will be worn and the water made turbid . This necessarily slow motion is attended by ...
... soils , the channel must be of such size as to limit the velo- city of the current to a speed not exceding half a mile her hour ; otherwise , the bed will be worn and the water made turbid . This necessarily slow motion is attended by ...
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9 ft absorbed acres amount Artesian Arthur Phillips Bashforth Boilers bore-hole boring tool brick steining brickwork chalk character cloth collected construction Cottages crown 8vo deep depends depth diameter district drainage area drains earth engravings excavation foot furnish a supply gallons of water gallons per day gauge geological impervious impurities Institute Civil Engineers interstical spaces iron cylinders Joseph Gibbs Lancashire land matter Mechanical Member Institute Civil millstone grit nature P. L. Simmonds pipes Plate porous strata portion practical Pump quantity of water Railway rain gauge rainfall rate of evaporation red sandstone formation reservoirs River Exe River Ouse River Tees River Vartry river water rods royal 8vo Screw sewed shaft sinking soil springs Steam Engine stored supply is taken supply of water surface Surface Condensation temperature Thomas Docwra tion towns Treatise Valve vapour water capable water daily water level water per day water taken water yielded Zerah Colburn دو