A rectangular channel 7.1 m wide by 3.1 m deep is lined with a smooth stone, well laid and has a hydraulic slope of 0.003. Using n = 0.028. What savings in earth excavation in m2 could have been offered by using more favorable proportions but adhering to the same delivery and slope?

Q: An excavation is made with a vertical face in a clay soil which has C = 50 KN/m², y = 18 KN/m³. The…

A: Given- cohesion of the soil C=50 KN/m2unit weight of soil γ=18 kN/m3Stability no. Sn=0.261Angle of…

Q: Maximum unsupported clay is = depth of cut in a 50 kN/m², y Y = M. (c 18 kN/m³ and $ = 30°)

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Q: Find the best hydraulic (rectangular) channel cut in rock (n = 0.035) to pass 25m³/sec on a slope of…

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Q: A cut is to be made in a soil for a canal having side slopes of 112: 1 to a depth of 8 m below the…

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Q: Example 9.12 A seismic survey was carried out for a large project to determine the nature of the…

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Q: A vertical cut is to be made in a saturated and submerged clay with c = 15 kN/m², Ysat = 18.5 kN/m³,…

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Q: Q.12.03 A seismic survey was carried out for a large project to determine the nature of the…

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Q: A site consists of a 12 m thick saturated clay deposit underlain by bedrock. The clay has…

A: The depth function D is given by,

Q: 15.3 A trench is to be excavated in a clay soil with y sat 20 kN/m³ and s, = 15 kPa. (a) Determine…

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Q: Calculate the theoretical depth of penetration 32 kN/m 3.5 m 90 Clay C = 12 kN/m²

A: Consider the given data H=3.5mP=32 kN/mConsiderqu=15 kN/m2 So here now, P=2q-rH   =2×15   =30 kN/m2

Q: Q.4 Workout the quantity of earthwork by using mean area method required for an embankment 350ft…

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Q: Q.8 A cut is to be made in a soil for a canal having side slopes of 1⁄2 : 1 to a depth of 8 m below…

A: Given data- Side slope- 112 : 1, Depth H=8 m, Cohesion C=15 kN/m2, ϕ'=10o, Void ratio e=0.86,…

Q: A seismic survey was carried out for a large project to determine the nature of the substrata. The…

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Q: The cohesion (c), angle of internal friction (p) and unit weight (y) of a soil are 15 kPa, 20° and…

A: Given;Cohesion (C) = 15 kpaAngle of internal friction () = 20Unit weight of soil () = 17.5 kn/m3

Q: Q.12.9 A seismic survey was carried out for a large project to determine the nature of the…

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Q: Q.13.22 A seismic survey was carried out for a large project to determine the nature of the…

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Q: Saturated silty clay encountered in a deep excavation is found to have a water content of 28%.…

A: Using basic relationships

Q: Q.2.21 A seismic survey was carried out for a large project to determine the nature of the…

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Q: O A long excavation with vertical sides and depth-to-width ratio of 0.5 is to be made in a deep…

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Q: A wide excavation is made on a site which has the following soil conditions: 0-2 m Gravel:…

A: Given data -  For - 0-2 m Gravel:                          gsat = 21.8 kN/m3, gdry =          18.5…

Q: A cut of 5m is made in a 10m thick layer of stiff saturated clay which is underlain by a layer of…

A: According to given data   A cut of 5m is made in a 10m thick layer of stiff saturated clay which is…

Q: An excavation is made with a vertical face in a clay soil which has C_{u} = 50kN /(m ^ 2) gamma_{1}…

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Q: Calculate the forces on the supports in the internally supported excavation system given in the…

A: In soil, lateral pressure refers to the force acting in horizontal directions. Designing bridge…

Q: A vertical cut is to be made in saturated clay with c = 15 kN/m², $=0°, and 20kN/m³. What is the…

A: Given- Cohesion C=15 kN/m2, ϕ=0oγ=20 kN/m3

Q: Q.13.19 A seismic survey was carried out for a large project to determine the nature of the…

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Q: A cut is to be made in clay for which the cohesion is 40 kN/m² and = 0. The maximum safe depth of…

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Q: An excavation is to be made in purely cohesive soil deposit having c = 20 kN/m² and unit weight = 16…

A: Given: Cohesive soil deposit having, c=20 kNm2. Unit weight, γ=16 kNm3. For pure clay soil, angle of…

Q: A cut is to be made in clay for which the cohesion is 40 kN/m² and = 0. The maximum safe depth of…

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Q: A vertical cut is to be made in a saturated and submerged clay with c = 15 kN/m², Ysat = 18.5 kN/m³,…

A: Given data in question  Cohesion 15 kN/m2 Unit weight 18.5 kN/m3 Unit weight of water 10 kN/m3 To…

Q: A cut is to be made in a soil for a canal having side slopes of 11/2: 1 to a depth of 8 m below the…

A: Given - Side slopes = 32:1 Depth, H = 8 m cohesion of soil, c = 15 kN/m2 φ' = 10o Void ratio, e =…

Q: A long excavation with vertical sides and depth-to-width ratio of 0.5 is to be made in a deep…

A: Vertical side and Depth to width ratio (B) = 0.5 Undrained shear strength (USS) = 20kPa Saturated…

Q: Problem- Geotech- The cohesion (c), angle of internal friction () and unit weight (y) of a soil are…

A: Given- Cohesion C=15 kPa, Angle of internal friction ϕ=20o Unit weight = 17.5 kN/m3, It is needed to…

Q: The cohesion (c), angle of internal friction (p) and unit weight (y) of a soil are 15 kPa, 20° and…

A: For the soil configuration,Cohesion, C=15 kPa,Angle of internal friction Unit weight,  = 17.5 kN/m3,

Q: Find the earth to be excavated in m³ if the ground surface is to be leveled 8m below the elevation…

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Q: In a clayey soil having 50 kN/m² as unit cohesion and 18 kN/m³ as unit weight, an excavation is made…

A: Given data- Cohesion C=50 kN/m2Unit weight γ=18 kN/m3Taylor's Stability number Sn=0.261To…

Q: 7. A rectangular channel 6 m wide and 2 m deep has a slope of 1 in 1100 and is lined with good…

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Q: 3. In a large field with a flat surface, an excavation will take place. According to the drilling…

A: Internal friction=24o, Dry unit weight=17 kN/m2, Saturated unit weight=19.2 kN/m2.

Q: The cohesion (c), angle of internal friction () and unit weight (y) of a soil are 15 kPa. 20° and…

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Q: IN A 6M THICK STRATUM OF FINE SAND HAVING SUBMERGED DENSITY OF 11KN/M³, QUICK SAND CONDITION OCCURS…

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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.