201311ENGINEERING STANDARD FOR INDUSTRIAL STAIRS, LADDERS, PLATFORMS AND SCAFFOLDS ORIGINAL EDITION JULY 1997 This standard specification is reviewed and updated by the relevant technical committee on June 2003he approved modifications are dimensions
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20101124the dredge pumps and associated gearboxes for the rock csds must be heavydutyhis is a result of the intermittent variable loads linked to rock scales of different dimensions and qualityor the same reason, the sphere passage in the dredge pump.
201841project dimensions include such items as length, width, depth, and channel alignmentredging quantities are measured in cubic yards cy to be excavated to achieve the desired configurationreconstruction quantities, are typically developed from predredge bathymetric survey data using hydrosurvey boats, and channel design information.
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The dredging machineuilt in 1934 by the us army corps of engineers, these 1,300 ton machines could move 80,000 cubic yards in just 24 hoursut as river passage became more stabilized, three of the four boats were retired and the mitchell was left as the only dredge still in service.
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