Draining for Profit, and Draining for HealthOrange Judd Company, 1902 - 252 páginas |
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Página 110
... column , place the depth of the lower end of the drain , ( this is established by the grade of the main or other outlet at which it discharges . ) 5th . Add this depth to the first number of the line next preceding it , and enter the ...
... column , place the depth of the lower end of the drain , ( this is established by the grade of the main or other outlet at which it discharges . ) 5th . Add this depth to the first number of the line next preceding it , and enter the ...
Página 111
... fifth column , ( on the line above it , ) and place the re- mainder on the next line of the fifth column . - Example : 20.70-1.64 = 19.06 . Then , from this new amount , subtract the second number of the fourth column , for the next ...
... fifth column , ( on the line above it , ) and place the re- mainder on the next line of the fifth column . - Example : 20.70-1.64 = 19.06 . Then , from this new amount , subtract the second number of the fourth column , for the next ...
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Draining for Profit, and Draining for Health George E 1833-1898 Waring Sin vista previa disponible - 2015 |
Términos y frases comunes
accumulated acre agricultural allow basin bottom brick bushels carried cause Central Park cents chapter clay collars commenced condition connection considerable contour lines cost course covered crop cultivation deposit depth discharge diseases distance ditch drainage dyke earth effect evaporation fall farm farmer feet deep fever field fifth column filled flow foot four feet Gisborne grade ground Hackensack River heat heavy rain houses improvement inches joints kiln labor laid land lateral drains laying length less lower main drain malarious manure marsh matters moisture muddy water nearly necessary obstruction operation outlet particles pipes placed plants plow porous practice prevent quantity rain-fall removed result roots salt marsh saturated season sewage sewers shown in Fig side silt silt-basin slope soakage spring stakes steepest descent stone subsoil sufficient surface tide tile tile-draining tion typhoid fever undrained upper end vegetable whole width