Field Guide to Urban Industrial Canals

Page 54

Dustpan Dredge + A hydraulic dredge, offers less precision uses water jets for cutting action, is not as effective in extremely rocky or compacted situations

1.

rigid ladder

2. pump hose to disposal site or barge 3.

water

+ For use in water channels that are primarily sand and gravel + Pumps a slurry that is

4. positioning cables 5.

suction pipe

7.

canal bottom

typically 4 parts water, 1 part solids through a hose up to 1000 ft to upland disposal sites or along the edges of the dredge site + It is effective only in sheltered waters because of the pipeline and rigid ladder system- it is not useful in rough waters + A typical dustpan Can excavate about 36oo cy of sediment per hour dustpan dredge


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