 | Dennis Hart Mahan - 1846 - 378 páginas
...the lower gates the openings are placed just below the surface of the water in the reach. The size of the opening will depend on the time in which it...the cut .are faced with masonry laid in hydraulic morlar. A sliding gate, fitted into two grooves made in the side walls, is manoeuvred by a rack and... | |
 | Dennis Hart Mahan - 1855 - 448 páginas
...character of their current, end the relative positions of the canal and stream. Small bi ooks which lift lower than the canal may be conveyed under it through...grooves made in the side walls, is manoeuvred by a rack end pinion, so as to regulate the quantity of water to be let in. The water of the feeder, or brook,... | |
 | Dennis Hart Mahan - 1867 - 428 páginas
...may be conveyed under it through an ordinary culvert. If the level of the canal and brook is nsarly the same, it will then be necessary to make the culvert...masonry laid in hydraulic mortar. A sliding gate, fitted irto two grooves made in the side walls, is manoeuvred by a rack rnd pinion, so as to regulate the... | |
 | Dennis Hart Mahan - 1871 - 470 páginas
...size, the character of their current, and the relative positions of the canal and stream. Small bi oaks which lie lower than the canal may be conveyed under...masonry laid in hydraulic mortar. A sliding gate, lilted into two grooves made in the side walls, is manoeuvred by a rack rnd pinion, so as to regulate... | |
 | Dennis Hart Mahan - 1871 - 456 páginas
...will then be necessary to make the culvert in the shape of an inverted syphon, and it is therefbre termed a broken-back culvert. If the water of the...and bottom of the cut are faced with masonry laid in hy« draulic mortar. A sliding gate, fitted into two grooves made in the side walls, is manoeuvred... | |
 | Junius Brutus Wheeler - 1876 - 502 páginas
...the stream is limpid, and its current gentle, it may be received into the canal. Its communication with the canal should be so arranged that the water...off or let in at pleasure, in any quantity desired. In cases where the line of the canal is crossed by a torrent, which brings down a large quantity of... | |
 | Junius Brutus Wheeler - 1876 - 504 páginas
...the stream is limpid, and its current gentle, it may be received into the canal. Its communication with the canal should be so arranged that the water...off or let in at pleasure, in any quantity desired. In cases where the line of the canal is crossed by a torrent, which brings down a large quantity of... | |
 | Junius Brutus Wheeler - 1876 - 504 páginas
...the stream is limpid, and its current gentle, it may be received into the canal. Its communication with the canal should be so arranged that the water...off or let in at pleasure, in any quantity desired. In cases where the line of the canal is crossed by a torrent, which brings down a large quantity of... | |
 | Junius Brutus Wheeler - 1876 - 504 páginas
...the stream is limpid, and its current gentle, it may be received into the canal. Its communication with the canal should be so arranged that the water may be shut <iff or let in at pleasure, in any quantity desired. In cases where the line of the canal is crossed... | |
 | Dennis Hart Mahan - 1877 - 642 páginas
...to make the culvert in the shape of an inverted syphon, and it is therefore termed a brofeerirback culvert. If the water of the brook is generally limpid,...fitted into two grooves made in the side walls, is mano3iivred by a rack and pinion, so as to regulate the quantity of water to be let in. The water of... | |
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If the level of the canal and brook is nearly the same, it will then be necessary to make the culvert in the shape of an inverted syphon, and it is therefore termed a broken-back culvert. If the water of the brook is generally limpid, and its current... 
