A rectangular channel 5.8 m wide by 1.4 m deep was laid to have a hydraulic slope of 0.001. Using n = 0.013. (a) What is its yield in cubic meter per second? (b) What savings in earth excavation could be realized by using most economical proportion? (c) What savings in lining per meter length could be realized by using most economical proportion?

Q: A hole was made in a stiff saturated soil having a Gs = 2.71 and moisture content of 0.30. The sand…

A: Given Gs = 2.71 w = 0.3 Water level in the hole is 6.3 m

Q: (c) A clay layer of 10 m thick with an average bulk unit weight y = 18.5 kN/m³ overlies a sand…

A:

Q: An earth embankment is to be compacted to a density of 19 kN/m³ at a moisture content of 14%. The…

A: The density of the compacted earth embankment is 19 kN/m³.The moisture content of the compacted…

Q: A 1.5 m thick strata of sand has a dry unitweight of 15 kN/m3. A contractor passes a vibratory…

A: To determine: The new thickness.

Q: fill is to be placed over the following soil profile shown below. Determine if the clay is normally…

A:

Q: 2.10 Refer to Figure P 2.10 and use these values: H = 7 m, • H, = 1.75 m, D =7 m D = 3.5 m Draw a…

A:

Q: b) A water supply well has been drilled to a depth of 10m in the soil profile given in Question 1…

A: Depth of well (H) = 10 mCo- efficient of permeability (k) = 0.1 mm/s = 0.1 x 10-3 m/sRadial…

Q: A rock fill has a dry unit weight of 135 pcf and a relative density equal to 83%. If Gs = 2.73, what…

A: The relative density of a substance is determined by the ratio of the mass of the substance to the…

Q: A deposit of silty clay is being considered for use in constructing a containment dyke. Vane shear…

A:

Q: 2. For the sample below of a 5 ft radius: a) calculate hydraulic gradients for all three soil…

A: Data given k1 = 0.006 in/sec k2 = 0.003 in/sec k3 = 0.016  in/sec γsat-1 = 115 lb/ft3 γsat-2 = 125…

Q: 8.7 A permanent surcharge of 100 kN/m2 is to be applied on the ground surface of the soil profile…

A:

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.