Chesapeake and Ohio Canal documents . st pins at their intersec-tion with every tie. The point ofthedam, on the up stream side, must be sheet piled with twoinch plank, well scribed and fitted fo the rock at the bottom of the whole upper surface of the dam must be covered with four inch plankwell and tightly jointed. These planks to be secured with nine inchwrought iron spikes ; on the top of these planks must be secured iceguards four inches thick at the butt, and tapering to an edge, each guardplank to be twelve feet long, and to be fastened with fifteen inch wroughtiron spikes. The
Chesapeake and Ohio Canal documents . st pins at their intersec-tion with every tie. The point ofthedam, on the up stream side, must be sheet piled with twoinch plank, well scribed and fitted fo the rock at the bottom of the whole upper surface of the dam must be covered with four inch plankwell and tightly jointed. These planks to be secured with nine inchwrought iron spikes ; on the top of these planks must be secured iceguards four inches thick at the butt, and tapering to an edge, each guardplank to be twelve feet long, and to be fastened with fifteen inch wroughtiron spikes. The up stream side of the dam will be well gravelled. There will be an abutment only on the Maryland end of the dam, built ofgood rubble masonry laid in water proof cement. The engineer shall, at any time, have the right to increase or diminishthe quantity of iron used, and to reject any timber or plank he may con-sider unfit for the work. [ Rep. No. 414. J 165 Sketch of dams Nos. 4 and 5, according to the altered plan. 5 feet. 15 5 feet. 15 feet. 166 [ Rep. No. 414. J State of the canal on the 1st of May, 1833, according to the quarterly report of the resident engineers, Messrs. Cruger and Purcell. Aggregate cost of the canal from section 85 to 112, inclusive. Description of work. Work done. Work to be done. Totals. 9 Flumes, ... ? 2,700 2,700 8 Lock houses, - 200 6,200 6,400 4 Waste weirs, - - - 500 1,100 1,600 3 Pivot bridges, 1 draw bridge, and 1 ferry, - 800 3,S0O 4,100 Towing path and flume bridges, - 25 375 400 Turnpike road. - - 4,500 4,500 Construction of canal, 274,763 48,542 323,305 locks, 85,361 42,775 128,136 culverts, 35,883 525 36,405 Catoctin aqueduct, 28,341 2,738 31,079 Totals, 425,873 112,755 538,628 Deduct 2 locks above public dam, 18,210 21,098 Total cost below do. 422,985 94,545 517,530 Aggregate cost of the canal from section 113 to 132, inclusive. Description of work. Work done. 2 Flumes, 1 Lock house, - 1 Pivot bridge, - Road by sections 123 a
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Keywords: ., bookcentury1800, bookidchesapeak, booksubjectcanals, bookyear1823
