The soil is acted upon by a uniformly distributed load of 60 kPa at the ground surface.60 kPaYary = 16.5 kN/m^34 mSandGWTSand8 mY= 18.0 kN/m^3Yeat =20.0 kN/m^36 mClaye=0.85LL = 48%1. Compute the settlement of the clay layer caused by primary consolidation if the soil is normally consolidated.[ Select ]2. Compute the settlement of the clay layer caused by primary consolidation if the preconsolidation pressure of clay is 230 kPa. Use Cs = Cc/5.[Select ]3. Compute the settlement of the clay layer caused by primary consolidation if the preconsolidation pressure of clay is 200 kPa. Use Cs = Cc/5.[ Select ]

To Find :- 1. Consolidation settlement when clay is normally consolidated. 2. Preconsolidation…

Answered: The soil is acted upon by a uniformly…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Given the soil profile below, estimate the consolidation coefficient of the clay if Ao_z = 500 psf at the middle of the clay. Use one layer for the clay in your calculation. он 10 ft 20 ft וד Incompressible Sand' V Clay sat = 120 pct CR = 0.3 TIT RR = 0.15 Pp = 1776 pst 8 Sat 120 pct
A 3m deep sand layer has a specific gravity of 2.68 and a void ratioof 0.60. Under this layer is a 2.5m deep clay profile with a specific gravity of 2.7 and a moisture content of 30%. The water table is observed at 1m below the ground surface. Determine the compression index of a normally consolidated clay after the surcharge of 75kPa. Clay is observed to have a void ratio of 0.40 after the surcharge. (Assume unit weight of soil profile above the clay layer is the same when the soil was not subjected to surcharge load).
Q₂/ From the result which obtained from consolidation test on a sample of clay soil at depth (3.5 m). Show if the soil is (N.C.C) or (O.C.C), if you know: (y sat = 18.82 kN/m³). Pressure Void ratio 0 0.903 25 0.865 50 0.843 100 0.795 200 0.730 400 0.651 800 0.555 1600 0.468 400 0.501 100 0.547 25 0.583 0 0.612
Refer to Figure 2, estimate the primary consolidation settlement in the clay layer. Given: Ag = 85 kN/m²; Hi = 2 m; H2 = 4 m; and H3= 6 m. Soil characteristics are as follows: Sand: ydx 14 kN/m³, Ysat 18 kN/m³ Clay: LL = 54; e = 0.98; Ysat 19 kN/m'; Cs =- Cc 150 kN/m? H3 Sand Clay ョ→
5. Calculate the consolidation settlement of the clay layer in the soil profile shown below due to a surcharge of Ao-25 kPa. What would be your suggestion to reduce this settlement? Assume the unit weight of water to be 10 kN/m³. B m SANDY 20 kN/m² CLAY Y18 kN/m OCR-1.2 C-0.05 Ce-0.45 -0.9 GW
1. A soil profile is shown in the figure. A uniformly distributed load of 75kPa is applied at the ground surface. The clay is normally consolidated. Compute the compression index Compute the primary consilidation settlement
Refer to Figure below. Estimate the primary consolidation settlement in the clay layer. Given: Δσ = 150 kN/m2; H1 = 3 m; H2 = 4 m; and H3= 5 m. Soil characteristics are as follows: • Sand: γdry = 15 kN/m3, γsat = 19 kN/m3 • Clay: LL = 65; e = 0.65; γsat = 18 kN/m3; ; Cs =1/6cc σʹc = 200 kN/m2
13. Situation 13 - The soil is acted upon by a uniformly distributed load ΔP = 60 kPa at the ground surface. a. Compute the settlement of the clay layer, in mm, caused by primary consolidation if the preconsolidation pressure of clay is 230 kPa. Use Cs = Cc/5. Round off to the nearest whole number. b. Compute the settlement of the clay layer, in mm, caused by primary consolidation if the clay is normally consolidated. Round off to the nearest whole number. c. Compute the settlement of the clay layer, in mm, caused by primary consolidation if the preconsolidation pressure of clay is 200 kPa. Use Cs = Cc/5. Round off to the nearest whole number.
For a normally consolidated clay layer in the field, the following values are given: Thickness of clay layer = 8.5 ft ● Void ratio = 0.8 ● ● ● ● Compression index (CC) = 0.28 Average effective pressure on the clay layer is 2650 lb/ft² Additional Overburden Pressure is 970 lb/ft² Secondary compression index (Ca) is 0.02 Determine the total consolidation settlement considering primary and secondary settlement. Select the correct response: 2.6425" 2.5631" 2.8866" 2.3856"
The soil is acted upon by a uniformly distributed load P=60 kPa at the ground surface. Compute the settlement of the clay layer,in mm, caused by a primary consolidation if the preconsolidation pressure of clay is 200 kPa, if the preconsolidation pressure of clay is 230 kPa, and if the clay is normally consolidated. Use Cs=Cc/5. Round off to the nearest whole number.
The thickness of a saturated specimen of clay under a consolidation pressure of 100 kN/m2 of is 24 mm and its water content is 20%. On increase of the consolidation pressure to 200 kN/m2, the specimen thickness decreases by 3 mm. Determine the compression index for the soil if the specific gravity of the soil grains is 2.70. a.0.92 b.0.56 c.0.63 d.0.52

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