The open channel shown in the following figure is constructed of smooth concrete. Water flows at 3.0 m2/s in uniform flow. What is the minimum slope? Use a reasonable value of the Manning's roughness coefficlent (i.e. for smooth concrete, use n= 0.013). Given that w 3.3 m. W. concrete channel water 60 O a. 0.00011 O b.0.00106 O.0.00498 O d.0.00064 O e. 0.00204

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Pricing Excavation and Backfill

Backfill, in construction, is the activity of returning the soil and gravel that are removed during building construction or using them again to toughen and support the foundation of the building or any other structural component.