A 3 m thick clay layer (cu = 50 kN/m2 and γ = 19.0 kN/m3) is underlain by a weaker clay (cu = 30 kN/m2 and γ = 18.0 kN/m3) to a large depth. A 2.0 m wide square foundation is placed at 1.8 m depth below the ground level. Determine the maximum column load that can be allowed on the foundation with FS = 3.

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Q: A square column foundation with base of 1.50 m is shown in the figure. It carries an axial load of…

A: Given data:- Axial load (P) = 490 KN Shape of footing = Square Base of footing (B) = 1.5 m Depth of…

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A: Gross bearing pressure: Gross bearing pressure is a total pressure at the base of the foundation due…

Q: Consider a continuous foundation of width B = 1.4 m on a sand deposit with c' = 0, Φ' = 38° and γ =…

A: For the corrections, the depth factor is the important one taken into account. The depth factor…

Q: A 2.0 m wide strip foundation is placed in sand at 1.0 m depth. The properties of the sand are: y =…

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Q: A 2.0 m wide strip foundation is placed in sand at 1.0 m depth. The properties of the sand are:  =…

A: Calculate the ultimate load-carrying capacity of the strip footing using terzaghi's method,  qu =…

Q: A square column foundation is to be constructed on a sand deposit (C = 0). The allowable load Q will…

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Q: A continues foundation with B=2.3m on a deposit of dense sand layer shown with diagram of E, which…

A: Given data Load intensity q=145 kN/m2 Considering the Strain influence method so Settlement, s…

Q: A foundation measuring 1.2 m x 2.4 m in plan is constructed in a saturated clay. Given: depth of…

A: The ultimate uplift capacity of foundations with special reference to transmission tower footings is…

Q: A 1.5 m wide continuous foundation carries a wall load of 375 kN/m on a clayey soil where y = 18…

A: Width of footing, Depth of footing, Wall load, Bulk unit weight, Cohesion, Angle of friction, To…

Q: 4.6 For a square foundation that is B X B in plan, D, = 2 m; vertical gross allowable load, Qall =…

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Q: Consider the case of a continuous foundation with B = 2 m, Dr = 2.0 m, and H=2.0 m. The following…

A: Gross bearing pressure: Gross bearing pressure is a total pressure at the base of the foundation due…

Q: Determine the contact pressure under the comers of the (4.5 m x 4.5 m) foundation shown in Figure…

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Q: Determine the maximum column load that can be applied or 1 1.5 m × 1.5 m square foundation placed at…

A: Dimensions of the square foundation = Depth of the soil = 1 m c' = 10 kN/m2The factor of safety =…

Q: A concrete foundation 3 m wide, 9 m long and 0.75 m thick is to be founded at a depth of 1.5 m in a…

A: To determine the safe bearing capacity of the sand deposit under the given conditions, we will use…

Q: Refer to Figure 5.2. Given: B = L = 1.75 m, Df = 1 m, H = 1.75 m, γ = 17 kN/m3, c' = 0, and Φ' =…

A: The general bearing capacity equation as modified by Cerato and Lutenegger (2006) for square…

Q: Redo Problem 7.6 using Vesic's (1975) solution [Eq. (7.12)]. 7.6 A 2.0 m wide continuous foundation…

A: Given  :  A continuous footing in a saturated clay               Width =  2.0 m               Depth…

Q: A square foundation of 5 m x 5 m is to be founded at a depth of 3 m in a deep layer of sand of unit…

A: (i) For ϕ=25° Refer the table for Terzaghi bearing capacity factors, we get Nc=25.1Nq=12.7Nγ=9.7

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A: Solution: Given Data: Square footing=1.5m×1mDf=1 mFOS=4Gross Allowable Load=? Gross Ultimate Bearing…

Q: 8.4 A rectangular foundation is shown in Figure P8.2, given B = 2 m, L= 4m q = 240 kN/m², H = 6 m,…

A: Part - 1 -  Average elastic settlement -  Se = qB1 - μ2EIfhere,q = foundation pressure = 240KNm2B =…

Q: A 4.5 m square foundation exerts a uniform pressure of 200kN/m2 on soil. Determine; i. The vertical…

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Q: A square foundation with dimensions 1m × 1m has to be constructed on a dense sand. The unit weight…

A: the ultimate bearing capacity (q_u) of a square foundation on sand is given by:Where: c' = effective…

Q: A saturated soft soil foundation has the properties: gamma(sat)=16 kN/m3, Cuu=10 kPa, phi(uu)=0, C=2…

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Q: A rigid foundation is subjected to a vertical column load, P in Figure 11.43. Estimate the elastic…

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Q: A flexible foundation of width B =2 m applies a uniform pressure of 17 kN/m² to the underlaying…

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Q: A rectangular foundation in a saturated clay deposit measures 1.5m× 3.0m in plan. The data given: Df…

A: Ultimate uplift capacity of the foundation  : Ultimate uplift capacity of the foundation is denoted…

Q: Refer to Figure 5.2 and consider a rectangular foundation. Given: B = 1.5 m, L = 2.5 m, Df = 1.2 m,…

A: Solution Given Data B = 1.5 m, L = 2.5 m, Df = 1.2 m, H = 0.9 m, Φ' = 40º, c' = 0, and γ = 17 kN/m3.…

Q: For a shallow foundation measuring (1.7 m x 2.2 m) as shown below:, Estimate the elastic settlement…

A: Elastic settlement : All soils experience elastomeric settling. In sandy soils, elastic settling is…

Q: 1. Figure 1. shows a continuous foundation on a deposit of sand layer and variation of the…

A: The elastic settlement of a foundation founded on granular soils according to Schemertmann is given…

Q: A reinforced concrete tower is provided on a ring foundation of inner radius of 8m and outer radiu…

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Q: 9.6 A mat foundation is shown in Figure P9.6. The design considerations are L = 12 m, B = 10 m, Dy =…

A: Length of foundation= 12 m Width of foundation= 10 m Depth of foundation= 2.2 m

Q: stimate the primary consolidation settlement; when the bottom san with a 5 m thickness of a clay…

A: Given:- qnet=1.2MN/m2 size=1.7x2.2m To find:- elastic settlement

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Q: An eccentrically loaded foundation is shown in Figure 12.25. Determine the ultimate load Q that the…

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Q: 5.6 For a square foundation that is B X B in plan, D, = 2 m; ver- tical gross allowable load Qall…

A: square footing

Q: A strip Foundation ( a long foundation in which the length is much longer than the width) of width…

A: Given dataz=width=1 mQ=point load=40 KNσZ=3Q2πz2(11+rz2)5/2 at the edge of foundation r=0at tat…

Q: Given: A square foundation (4.5m x 4.5m) is founded at 2.4m in a soil with the following properties:…

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Q: A continuous foundation, width B = 1.4 m and Df = 1 m, on a sand clay deposit with c' = 5 kPa, O' =…

A: Solution Given Data B= 1.4 m Df= 1m c'=5 KPa φ'=320 e=0.15 m β=160

Q: A square column foundation with base of 1.40 m is shown in the figure. It carries an axial load of…

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Q: Determine the net ultimate bearing capacity.

A: Given : Size 10×8×3 mat [L×B×D] Cu=60kN/m2 ϕ=0 Soil = clay Net Ultimate bearing capacity…

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.