. Handbook of construction plant, its cost and efficiency. line for dredge 3,023 Rubber sleeves 1,275 Fontoons and barges 6,501 Skiffs 154 $112,139On the Chicago canal two dredges were used, which aredescribed in Engineering News, September 6, 1894. Each dredgewas equipped with a 6-inch centrifugal pump and a 250 h. The discharge pipe was 18 in. in diameter, made in 33 , coupled with rubber hose held by iron clamps. Eachdredge averaged 1,732 yards in 10 hours. 230 HANDBOOK OF CONSTRUCTION PLANT In Engineering News, October 30, 1902, Mr. John Bogart, incharge of the Massena
. Handbook of construction plant, its cost and efficiency. line for dredge 3,023 Rubber sleeves 1,275 Fontoons and barges 6,501 Skiffs 154 $112,139On the Chicago canal two dredges were used, which aredescribed in Engineering News, September 6, 1894. Each dredgewas equipped with a 6-inch centrifugal pump and a 250 h. The discharge pipe was 18 in. in diameter, made in 33 , coupled with rubber hose held by iron clamps. Eachdredge averaged 1,732 yards in 10 hours. 230 HANDBOOK OF CONSTRUCTION PLANT In Engineering News, October 30, 1902, Mr. John Bogart, incharge of the Massena (N. Y.) canal, gives the cost of operatingtwo dredges. Dredge No. 1 cost $40,000. It had a 12-inchwrought iron discharge pipe, a rotary cutter, and a centrifugalpump driven by a Lidgerwood compound condensing engine of125 h. p. It lifted the material 30 feet above the water anddischarged it through a 2,000-foot pipe. The depth of cut was22 feet below the water surface. The output averaged 1,125yards in 22 hours, at a cost of $, or 8% cents per Fig. 85. 20-inch Hydraulic Dredge Designed and Equipped to Work on New York State Barge Canal. This Dredge Has Delivered 456,000 Cubic Yards in One Month and Cost $76,000, Not Including Pipe Line or Pontoons. Dredge No. 2 cost $60,000. Its discharge pipe was 18 inches indiameter. The output averaged 1,554 cubic yards at a cost of$145, or cents per yard. Otto Fruhling, a German contractor, dredge operator anddesigner, has developed a new system of suction dredging. Inthis system an inverted dipper dredge bucket, at the end of thesuction pipe, scrapes up and collects the dredged material beforethe suction forces come into play. This dredge is describedby Mr. John Reid in an article in Engineering News, from whichthe tables on following pages are taken. HO 0 . as OH fi Ohf* Ph oag| !° o*o 02 >d m* S S S S OS OcqNOOOOOOa; g O lO 1M (M CO (gj N* (M O S 2 s 5 S » OS OOO • -OOOnOOOOOOMHO • OrlO n * M<c-i£)00 -Oi . -
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbuilding, bookyear191
