Draining for Profit: And Draining for HealthOrange Judd Company, 1890 - 252 páginas |
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Página 53
... marked in even feet . When they are marked with fractions of a foot , the lines must be made to cross at points between two in- tersections , nearer to one or the other , ac- cording to their elevations , —thus between 1.9 Fig . 7 ...
... marked in even feet . When they are marked with fractions of a foot , the lines must be made to cross at points between two in- tersections , nearer to one or the other , ac- cording to their elevations , —thus between 1.9 Fig . 7 ...
Página 57
... marked , and , by the aid of the following tables , the instrument indicates the rate of fall per hundred feet of horizontal measurement , and per hundred feet measured upon the sloping line . * Table No. 1 shows the rise of the slope ...
... marked , and , by the aid of the following tables , the instrument indicates the rate of fall per hundred feet of horizontal measurement , and per hundred feet measured upon the sloping line . * Table No. 1 shows the rise of the slope ...
Página 101
... marked m , near its upper end , as the lateral entering there carries the water of a spring , which is supposed to fill a 14 - inch tile . The length of this drain , from the silt - basin to that point is 575 feet . The main drain Ċ ...
... marked m , near its upper end , as the lateral entering there carries the water of a spring , which is supposed to fill a 14 - inch tile . The length of this drain , from the silt - basin to that point is 575 feet . The main drain Ċ ...
Página 103
... marked Ɑ1 , C2 , C3 , etc. The stakes of the sub - main C7 , are marked 07a , 076 , C7c , etc. The stakes of the lateral which enters this drain at C7a , are marked Ca , Ca , Ca , etc. etc. This system , which connects the lettering of ...
... marked Ɑ1 , C2 , C3 , etc. The stakes of the sub - main C7 , are marked 07a , 076 , C7c , etc. The stakes of the lateral which enters this drain at C7a , are marked Ca , Ca , Ca , etc. etc. This system , which connects the lettering of ...
Página 104
... marked K , which is about 3 feet below the level of the highest part of the ground . The telescope should stand about 5 feet above the surface of the ground directly under it . The Levelling - Rod , ( See Fig . 7 , ) is usually 12 feet ...
... marked K , which is about 3 feet below the level of the highest part of the ground . The telescope should stand about 5 feet above the surface of the ground directly under it . The Levelling - Rod , ( See Fig . 7 , ) is usually 12 feet ...
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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
acre agricultural allow basin bottom brick bushels carried cause cents clay collars commenced condition connection considerable contour lines cost course covered crop cultivation deposit depth discharge diseases distance ditch drainage dyke earth effect Ensilage 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 retentive roots salt marsh saturated season sewage sewers shown in Fig side silt silt-basin slope soakage soil spring stakes steepest descent stone subsoil sufficient surface tide tile tile-draining tion typhoid fever undrained upper end whole width