It is proposed to build an 8-story building with a footprint of 20 m x 30 m, resting on a mat foundation of the same dimensions, in a saturated clay with undrained shear strength of 60 kPa. Assume approximately 12.5 kPa per floor for dead and live loads. Unit weight of soil is 18kN/m3 . a) At what depth would you place the mat to make this a fully compensated foundation? b) What would be the depth of this mat foundation for the net factor of safety of 5? c) What is the gross factor of safety for the depth determined in the answer to question b)?

Q: 1) For the foundation sitting on top of the 5m thick soil calculate dimension. (Factor of Safety:3)…

A: Given: A square foundation resting on uniform sand as shown in the figure   Given SPT N value= 9…

Q: Find the settlement due to consolidation of a 9ft × 9ft coloumn foundation (figure) with a load of…

A: Solution:- Given information Density of clay, γ=115 lbs/cf, and Compression index, Cc=0.32 Initial…

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Q: Q1/ A five story office building are to be built in a deep, high quality fine-grained soil deposit.…

A: Answer We are given  five story office building high quality fine-grained soil bedrock depth = 75 m…

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A:

Q: Solve the attached question

A: Solution; (a) At top of the clay: σ'0=6.25*20+1.25(22-10)σ'0=140 kPaAt bottom of the…

Q: a. Find the initial vertical stress at depth of 6m from the surface. b. Find the vertical stress…

A: Dear student, according to our company guidelines i can answer only first three subparts if you need…

Q: At a site, it is planned that a circular grain silo will be constructed at the ground surface. The…

A: At a site, it is planned that a circular grain silo will be constructed at the ground surface. The…

Q: A foundation carries uniform loads as shown. Determine the value of w (in kN/m). 70 kNm 70kNm…

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Q: meters. The shape factor used in the formula se = q(aB') avg I,If to calculate the (Es)avg c…

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Q: Explain about the Lateral pressure conditions for cohesive soil.

A: Lateral pressure may be defined as the pressure exerted by the soil in horizontal direction on…

Q: Calculate the primary consolidation settlement of the 8 ft thick clay layer (See Figure)

A: The values and diagram given in the question are as follows: Preconsolidation pressure(σo¯)=2000…

Q: V=400 kN M=40 kN.m Square footing $ = 28° Yat = 18.0 kN/m³ 1.5 m 0.5m 1.0 m

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Q: 2m x 6m singular sitting on a sandy ground If the total foundation pressure of a foundation is 150…

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Q: n the following example, a rectangular foundation must be designed whose B/L ratio must be equal to…

A: step 1-

Q: Refer to Figure 5.9. For a continuous foundation in two-layered clay, given:●● γ1 = 121 lb/ft3,…

A:

Q: A 30 cm square plate settle by 8 mm in the plate load test on a cohesionless soil, when the…

A: A square bearing plate with, Width of plate, Bp=30 cm = 0.3 m Settlement of plate, Sp = 8 mm…

Q: Circular rigid foundation having a diameter of 20m is resisting a load of 110kPa. The foundation…

A: Given: Foundation diameter, B = 20 m Resistance load, q = 110 kPa Elastic modulus of soil, Es = 30…

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Q: A soil has y=17KN/m³, C=50 KN/m², ¤= 32, and e= 0.39. Before the foundation was laid a compaction…

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Q: Determine the increase in vertical stress (kPa) 6 m below the corner of a rectangular foundation 4 m…

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Q: what depth will the total stress be 250 kPa.

A: Solution: Givendata foundation of dimension = 2.5 x 3.5 m load =  900 kN  depth below the soil = 1.5…

Q: Four columns of a building are to be located within a plot size of 10 m x 10 m. The expected load on…

A: given bearing capacity = 100kn/m2 column load =4000kN Area required for each isolated footing =…

Q: It is proposed to build an 8 story building with a footprint of 15 m × 20 m, resting on a mat…

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Q: A foundation carries uniform loads as shown. Determine the value of w (in kN/m). 70 kNm W. 4m 2m

A: We are required to find the value of w

Q: An office building is to be supported on 150 ft : 300 ft mat foundation. The sum of the columnloads…

A: The given data is: Dimension of foundation=150 ft*300 ft Total load=90000 k Total settlement=1.8 in…

Q: The capacity for a certain foundation system is estimated to be 620 kN with a COV of 0.3. Thedemand…

A: Capacity=620 kNCOV= 0.3Capacity estimated = 150kNCOV=0.15The mean factor of safety…

Q: A foundation carries uniform loads as shown. Determine the value of w (in kN/m). Final answer is 3…

A: To find the value of w in kN/m

Q: 8.1 Refer to Figure 8.3. For a flexible load area, given: B= 3 m, L= 4.6 m, q = 180 kN/m², D; = 2 m,…

A: solution Given B =3mL=4.6mq=180KN/m2Df=2mts E = 8500KN/m2ν = 0.3the flexible settlement at the…

Q: Some useful information's: Cv t Tv %3D d2 Po+AP Sef Cc Hlog 1+e For N.C.C. For O.C.C. Cr P. + AP if…

A: Given: A raft foundation covering an area of 20 x 32 m2 Depth=10 m Required: To determine(i) Net…

Q: L-1.0 m Y-17 kN/m -30 C-5 kN/m? B-1.0 m- A. What is the immediate elastic settlement if the load Q…

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Q: Find the settlement due to consolidation of a 9ft × 9ft coloumn foundation (figure) with a load of…

A: It is the process by which the volume of soil is decreased by the removal of water from the pore of…

Q: 1. A soil profile for an office building foundation is on a sand layer of 10.4 meters, which is…

A: The process of soil consolidation occurs when the volume of a saturated (partially or totally…