A soil profile consists of a sand layer 2m thick, whose top is the ground surface, and a clay layer 3m thick with an impermeable boundary located at its base. The ground water table is at the ground surface. A widespread load of 150kPa is applied at the ground surface. Assume that the soil is in a normally consolidated state. Calculate the consolidation settlements at 3 months, 6 months and 2 years if the load is increased linearly to 100kPa over 6 months. Ysand(sat)= 21 kN/m³, Yclay(sat) = 17 kN/m³, eo=1.5 C₂=0.5 c=5.5m²/year

Q: A 3m deep sand layer has a specific gravity of 2.68 and a void ratiodf 0.60. Under this layer is a…

A: Compression index is CC=eo-eflogσ1+Δσσ1soFind inital void ratio of claySeo=woG1eo=0.32.7eo=0.81

Q: Assume that the compressible soil shown in Figure 1 consists of a clay layer 10 ft thick. A…

A: Initial void ratio (eo) = 1.10Saturated Densityνsat =  115 lb/ft2Existing over burden pressure(po) =…

Q: Estimate the vertical coefficient of permeability for a uniform clay deposit where representative…

A: Given data: Liquid Limit = 92 Plastic Limit =34 Void ratio = 1.75 clay fraction = 0.4

Q: The results of two consolidated-undrained triaxial tests on an over-consolidated clay soil are as…

A: For test number 1-σ1=190kPaσ3=65kPaFor test number 2-σ1=340 kPaσ3= 130 kPaFor total C and ϕ…

Q: A clay layer 5 m thick has double drainage. It was consolidated under a load of 127.5 kN/m2. The…

A: Given Data:Thickness of layer=5mdouble drainageLoad=127.5 kN/m2Increased load=197.5 kN/m2Coefficient…

Q: A surcharge of 250 kPa is applied over a large area above the soil profile shown below. The clay…

A: Settlement of clay after 40 days is 32.07mm.Explanation:

Q: a. Determine the coefficient of consolidation for the load range in cm squared/min. b. Based on the…

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Q: For the soil profile shown; a) Calculate the settlement due to primary consolidation for 5 m clay…

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Q: The soil profile at a site for a proposed office building consists of a layer of fine sand 10 ft…

A: Thickness of fine sand layer=10 ftOCR=2.5Thickness of clay layer=2 ftDepth of water table=3 ftVoid…

Q: Q5: Figure below shows a soil profile. The uniformly distributed load on the ground surface is Ao.…

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Q: Question 3 Refer to Figure Q3. Estimate the primary consolidation settlement in the clay layer.…

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Q: The figure below shows the soil profile at a site where you plan to lower the water table. You have…

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Q: A 10 m thick clay layer with single drainage settles 10 cm. in 5 year. The coefficient of…

A: Given: Single drainage Settlement S=10cm in t=5 years. Coefficient of…

Q: A proposed fill is to be placed on the soil profile shown in Figure 3.9. A consolidation test has…

A: To Find :- Over consolidation ratio of the silty clay soil and determine whether the soil is…

Q: = 85 kN/m²; Refer to Figure 2, estimate the primary consolidation settlement in the clay layer.…

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Calculation of Settlement

The vertical displacement of the structural foundation due to the loading from the superstructure is known as settlement. It is due to the reduction of air voids present in the soil. The amount of vertical displacement depends on the bearing capacity of the soil on which the foundation is laid. The effect of the settlement depends on the magnitude of settlement, uniformity, and the structural design of the structure. The maximum allowable settlement for residential and office buildings should be less than 18 mm, for industrial buildings, it is 38 mm and for commercial buildings, it is 25 mm.