A layer of saturated clay is 10 m thick, the lower boundary being impermeable; an embankment is to be constructedabove the clay. Determine the time required for 90% consolidation of the clay layer. If 300 mm diametersand drains at 4−m centres in a square pattern were installed in the clay, in what time would the same overalldegree of consolidation be reached? The coefficients of consolidation in the vertical and horizontal directionsrespectively are 9.6 and 14.0 m2/year.

Q: settlement of the clay layer due to placing of fill material will be

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Q: A SATURATED SOIL MASS HAS A COMPRESSION INDEX OF 0.25. ITS VOID RATIO AT A STRESS OF 10 KN/M² IS…

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Q: 13. The unit of uniformity coefficient is a. kN/m? b. m²/kN c. unitlessd. m/kN

A: Qn no: 13)    To find:          The unit of uniformity coefficient?   Solution:      Uniformity…

Q: Given: rw = 0.25 m, rs = 0.35 m, de =4.5 m, cv 5 cvr = 0.3 m2/month, kh/ks 5 2, and Hc = 9 m.…

A: rw=0.25 m rs=0.35 m de=4.5 m Cv=0.3 m2/month khks=2 Hc=9 m Double drainage, d=Hc2=92=4.5 m

Q: The soil profile at a construction site is shown in the figure (not to scale). Ground water table…

A: Answer  We know that the over-consolidation ratio is given by OCR = σc'σ' σc'= pre-consolidation…

Q: The soil profile at a construction site is shown in the figure (not to scale). Ground water table…

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Q: A) Only adding a wide surface load of great pressure (e.g. embankment). B) Only drilling a vertical…

A: To Determine: The following separate, unrelated actions cause consolidation settlement in the clay…

Q: Exploratory drill hole 12m 8m 4.5 m An exploratory drill hole was made in a stiff saturated clay…

A: Given data: w=22%Gs=2.16 water table is 8m above the sand layer.

Q: If the clay is OC, pre-consolidation pressure, Pc=200 kPa, Cc=0.1, Cr=0.025, e.=0.9, calculate the…

A: step 1-

Q: 05: A) For the clay layer shown in Fig.(4), find the consolidation settlement for: - Uniformly…

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Q: c. remains constant d. partially satutatet 9. consolidation theory is applied for: a. Clay b. Sand…

A: 9. Option (d) is correct

Q: Question- Determine the Hydraulic conductivity of a normally consolidated clay deposit of thickness…

A: Given data- Normally consolidated clay deposit- Thickness t=3 m, One-way drainage, Coefficient of…

Q: Q6): A layer of 3-m thickness (double drainage) of saturated clay with the following data: Gs=2.7,…

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Q: Q If you are to derive the Terzaghi Theory of 1D consolidation for a half-closed layer, how its…

A: Terzaghi's theory is based on one dimensional consolidation. Half close layer means that there is…

Q: system primar e followings 50 kN/m? а) о — 150 kРа Sand Yt = 18.7 kN/m3 5 m b) o = 175 kPa c) o =…

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Q: 1.5m thick clay layer commences at a depth of approximately 2.5m below the ground surface and it is…

A: Given: Thickness of clay layer =1.5mCoefficient of consolidation = 4mm2/minNote that the depth of…

Q: a. Liquid state b. Plastic state c. Semi soll 15. The Liquid limit and plastic limit was discovered…

A: liquid limit and plastic limit

Q: For soil profile shown in figure below, estimate the consolidation settlement due to pla 3m fill…

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Q: (b). The results of a consolidation test on an undisturbed soil sampled at a depth of 10m below the…

A: Given Data- Depth at which soil is sampled = 10 m Saturated unit weight, γsat  = 16 kN/m3 γw=10…

Q: A surcharge of 100 kPa is applied over a large area above the soil profile shown in the figure…

A: A surcharge of 100 kPa is applied over a large area above the soil profile shown in the figure…

Q: exploratory drill hole was made in a stiff saturated clay (Gs = 2.72, and w = 35%). The sand layer…

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Q: 9-19. A certain doubly drained clay layer has an expected ultimate settle- ment s. of 15 cm. The…

A: For real time t = 0.20 yr The Time factor T is given by, Cv = T Hdr2t  H is the mid depth of clay…

Q: I profile at a constru GWT) is at 5 m bela und water table wa

A: over consolidation ratio (OCR) is given by the ratio of pre-consolidation pressure to present…

Q: soil strata can be described as 6 meters of sand underlain by 4 meters of clay with the water table…

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Q: A saturated clay stratum draining both at the top and bottom undergoes 50% consolidation in 16 years…

A: Given data- A saturated clay stratum- Double side drainage at top & bottom- 50% consolidation in…

Q: 4. At the stage of secondary consolidation settlement, the excess porewater pressure becomes equal…

A: Answer :-  4 ) At the stage of secondary consolidation settlement the excess porewater pressure…

Q: For the conditions show below, calculate the safety factor of the clay against bottom blow-up after…

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Q: I For soil profile shown in Fig. Calculate the amount of ultimate consolidation settlement( 2 m 0.5…

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Q: 11. The soil stiffness could be obtained by carrying out: a.triaxial test b. consolidation test…

A: 11. (a) triaxial  test

Q: A 10 m thick clay layer with single drainage layer undergoes a settlement of 22 mm in 3 years. If…

A: Ans is 10 years

Q: 14. If the natural water content between plastic limit and liquid limit ,the soil mass is in Dloctic…

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Measuring site work, Excavation and Piling

Bid drawings typically include very little material about the precise requirements of site work operations, measuring site work and excavation work differs from measuring most other works on a construction project. The actual site work conditions are not provided and also the dimensions of the excavations are not known during the pre-construction phase. The precise measurement of the excavation and backfill of the earth material and topsoil is important for a contractor to decide upon the total cost required for the process. All the works should be carried out under OSHA (Occupational Safety and Health Administration) standards to ensure the safety of the workers.