Sand: WT Ysat = 19 kN/m³ Ydry = 17 kN/m³ 3.5 m Sand: Ysat = 20 kN/m³ 4.5 m Ydry = 18 kN/m³ Ysat = 20 kN/m³ eo= 0.9 Clay: = Cc 0.36 Cr 0.12 = OCR = 1 6.0 m Sand: Ysat = 19 kN/m³ 2.0 m BEDROCK
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A pressure increase of 250 kPa is imposed across a wide region above the depicted soil profile. The clay stratum is initially under normal consolidation and has a coefficient of consolidation (cv) of 0.002 cm2/s. The groundwater level sits 3.5 meters beneath the soil surface. Determine the settlement of the clay layer, in millimeters, 40 days following the application of the pressure increase. noted that The final settlement at the end of primary consolidation is equal to 515 mm.
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- here are the answer, only need solutions 1.f = 11.46 MPa 2.Mcr= 88.90 kN-m 3.fconc= 17.14 MPa; fsteel= 318.20 MPaGiven the figure below and considering a downward flow, forthe sand the following are its properties e=0.52 and Gs = 2.67, h= 0.650 and H1 = 1.20 m; H2 = 3.50 m,z = 1.50 m. a) Calculate and illustrate through a diagram the 6,u and 6' of the points C& B. Place your Calculated Values here: Inflow Point 6 6' (歲)。 Valve (open) B OutflowProblem Number 2: Given the figure below and considering an upward flow, forthe sand the following are its properties e=0.52 and Gs = 2.67. a) Calculate and illustrate through a diagram the 6,u and 6' of the points A, & B.10 Points b) what is the upward seepage per unit volume of soil? 15 m 2 m Valve (open) Inflow Sand P eat
- The head of a groundwater aquifer is described in Cartesian coordinates by 1 h(x, y) = 1+ x2 + y2 + x + xy Which of the following(s) is/are the correct strategy for determining the maximum value of the head of a groundwater aquifer. (Choose all that apply!) A) Ater putting the equation in an appropriate tonm we can apply Bisection Method B) After pasting the eigualicon in an uppoprkate fum we cian apply Ciauss Seldel Meshud C) Alliti putting tie tli inan appipriate fonm we tan apply Newien Methed for systems O D) After putting the equation in an appropriate form we can apply Lagrange Interpolation E) Alser puting thqutn in an appropriate fam we can ply Newton Dividesd Nfferneresolve problem: Redo problem (5.3) but with sand instead of clay as shown in the figure below.(Ans.: Si(Total) = 5.75 mm) "please resolve the problem 5.3 but sand instead of clay" "solve all problem"1) For hydration to occur, what is the approximate minimum w/c ratio required? A) 0.5 B) 0.15 C) 0.35 D) 0.25 2) 1 MPa (Mega Pascal) is equivalent to: A) 1 N/mm^2 B) 10^6 N/mm^2 C) 10^-3 N/mm^2 D) 1000 N/mm^2
- 5. The coefficient of permeability of a sand at a void ratio of 0.62 is 0.03 cm/sec. Estimate the coefficient of permeability at a void ratio of 0.48. Using Casagandre equation Using Kozeny-Carman equation Find the difference in the rate of flow using the results of “a” and “b” if i = 0.70 and A = 0.6 m2.f Example Arectangular Sedimentation bank with an area a 200m² treats treats a flow of 16.000 m³/day. The water entering the tank Contains a substantial number of clay agglomerates with specific gravity of 1.2 and a diameter of 0.07 mm. what percentage of these Particals will be removed in the sedimentation tank ? and P= loookg/m M = 1·002 × 10³ kg/m.s 19 3Question 1 For the system shown below, determine the primary consolidation if C, = 0.05 for the followings 50 kN/m? а) о 3 150 kРа Sand 5 m Yt = 18.7 kN/m3 b) ор 3D 175 kРа c) op = 250 kPa Sand Ysat = 19.7 kN/m3 5 m Caly Y = 9.7 kN/m³ Cc = 0.83(= 0.009LL – 10) 2 m e, = 1.1 Sand
- For a vibroflotation work, the backfill to be used has the following characteristics:D50 = 2 mmD20 = 0.7 mmD10 = 0.65 mmDetermine the suitability number of the backfill. How would you rate the material?25. Refer to Figure 7.16. What would 90% of the maxi- mum dry density equal for this curve? If the speci fications require 95% of standard Proctor density and within +2% of the optimum water content, what range of values would be acceptable for this test?Your company has won a contract to provide and compact the fill material for an earth levee (an embankment built to prevent overflow of a river), with the dimensions shown below. The levee fill is a silty clay soil to be compacted to atleast 95.1% of maximum standard Proctor of dry unit weight= 109lb/cu.ft at an OMC of 18.6%. Your borrow pit has a silty clay with an in-situ moist density of 112.6lb/cu.ft at 18.1% water content and a Gs = 2.679. When the soil is excavated and loaded on to your trucks, the void ratio of the material is e = 1.46. Your trucks can haul 401 cu.ft of material per trip. DETERMINE THE FF AND SHOW COMPELETE SOLUTION. ALL FINAL ANSWER WILL BE IN 3 DECIMAL PLACES. 1. Determine the volume of fill required for the levee in cu.ft 2. Determine the volume required from the borrow pit in cu.ft 3. Determine the required number of truck loads.