A Treatise On The Principles And Practice Of Dock Engineering

DOCK GATES. 349 TABLE XXV.—Dock Gates. Remarks. j3pairs of gates, 2outer pairs 1 deeper than inner pair. 12 unequal leaves; 41*5 and 1 22'25 ft. long respectively. IGates widened and deep- 1 ened before completion. (3 pairs of gates ; outer and middle pairs deeper than (inner pair. Price of oak, 7s. per cub. ft. » 5s. Now out of use. «Heel-post cast iron, re- (mainder wrought iron. Replaced iron gates. Horizontal giroers. Vertical girders. Horizontal girders. Width at coping level. Cost per Sq. Foot of Waterway. s. 53'7 23'25 30'76 24'7 54'08 58'08 56 51'5 51'8 53'7 50 37'7 52 42'2 54 48'6 33'25 30'75 1 55'4 i 26 i21 27'4 17'6 32 17'7 14'6 18 25 36'4 24 24'8 22'4 Cost per Sq. Foot of Gate. s. 48 17'72 22'45 15'7 46'75 46'92 46'92 44'5 45'3 47'2 42'16 32'6 39 35'6 37'2 26'16 25'3 49' 24 18 23 Rise of Sill. Feet. 14 10 9'5 13'75 18 10'75 10 10 16 16 15 16'5 20 20 11'78 14 15'5 16'5 17'5 10 14'08 12'2 12'2 7'84 Weight of One Leaf. Tons. 170 X 176 J 41'25 28'62 31'2 X 16'8 ) 45 165 153 185 165 X 146'5 1 78 125 70 102 45 153 54 44 39 43 61 127 93 99 103 150 Height of Gates. Depth of Water at H.W.O.S.T. Feet. Feet. rw 22'5 26'5 20 124 21 25-5{ 18'25 1 22'5 31 134'7 31 32'7 25 33 39'5 44'25 32 38'75 33 37-75 39'5 39'5 36'25 38'2 42 44'7 36 38'7 30 31 27 30'75 36 40'33 28 38'5 48 23'5 26 21'75 29'75 35'75 39'5 24'5 27'75 20'84 24'08 20'84 23'75 .. 22'75 .. 31 .. 21 21 .. 16 .. 38'2 .. 38-2 .. 51'5 37 .. 43 26'75 35 27 • 35 Width of Waterway. Feet. 85 { 61 50 49 70 65 60 60 90 94 90 100 80 80 { 60 55 80 60 70 70 48 82 69 69 42'7 32'6 55 45 45 34'25 72 72 82 82 82 65'6 65'6 Date. Circa 1883 1897 1892 1891 1857 1880 1880 1880 1895 1899 I 1895 I 1900 ; 1898 1886 1894 I 1869 i 1886 1855 1877 1890 1893 1880 1887 1883 1881 1880 1891 1898 1891 1852 1900 1894 1 1894 1894 1898 1898 Material. Greenheart, Steel, Wrought iron, .... », .. . • Greenheart, Steel’’ Wrought iron, .... Steel frames, wrought-iron skin, . Wrought iron and greenheart, Steel frames, wrought-iron skins, Wrought iron, .... Greenheart, pitchpine, and Memel, Steel, Oak and pitchpine, Steel and galvanised iron, Galvanised iron, .... Oak and teak, Oak, Wrought iron, .... Oak, Wrought iron, .... Cast and wrought iron, . Steel, ,, ...... ,, ...... Greenheart, Entrance or Passage. o2o QÖ ^ .. - 50 5 Hu So S SæOæiSfi®Âï BqH a riKri Mi« Port or Locality. Hull, . Blyth, . Jarrow, South Shields, Dublin, Liverpool, . » . . . >» .. . London, ■ : :: Avonmouth, Limerick, . Newport, Mon., . Dunkirk, » • •• >> . . . Harburg, Glückstadt, Emden, Bremerhaven, Kaiser William Canal, » »» Buenos Ayres, . >>