Two identical rigid foundations are given. Calculate the differential settlement ratio(8/L) after 100 days and long term after construction of the foundations.Hint: Average total final settlement of a rigid footing due to a clay layer can be found based on thefollowing equation: Sy = 0.75 m, H dơP = 600 kNP = 600 kN15 mFoundation B1.5 m x 1.5 mFoundation A1.5 mx 1.5 m0.8 m0.8 mSand2 m3.5 m= 18 kN/mE 20 MPa, v * 0.3Clay4.5 mYeat = 19 kN/m2,m, = 0.2 m2/MN,C, = 107 m/s3 mHighly permeable bedrockNot to Scale

The given data is: Stf=0.75 mv H∆σ mv=0.2 m2/mN For A, H=3 m For B, H=4.5 m

Answered: Two identical rigid foundations are…

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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This is Civil Engineering. Specifically Foundation Engineering. Please post thorough answers and work. Any plot needs to be computer generated. Thank you
Q1/ The results of a load test carried out on a plate of size 30 cm x 30 cm are given in Table below. The load test was carried out at a depth of 2.5 m, below ground surface. The soil profile is fairly homogeneous sand at the site. From the test results: a. determine the settlement of an actual foundation of size 2.5 m x 2.5 m carrying a total load of 155 ton and located at a depth of 2.5 m below the ground surface. b. What is the bearing capacity of foundation if the settlement of plate 12.6 mm. Load intensity 0.496 0.992 1.488 1.984 2.48 2.976 3.472 3.968 4.464 496 kg/em Settlement, 0.5 1.0 1.8 2.75 4.4 5.4 9.8 12.5 17.0 28.7 mm
2. Please find the possible solutions for this question! A foundation 4 m x 5 m transfers a total load of 5 MN to stiff overconsolidated clay with an OCR=4 and ysar=19 kN/m (given figure below). Groundwater level is at 1 m below the ground surface. A CU test was conducted on a soil sample taken at a depth 5 m below the center of the foundation. The results obtained are (cu.)p = 40 kPa, o', = 28, and 'es= 24. Determine if the soil will reach the failure state for short- term and long-term loading conditions. If the soil does not reach the failure state, what are the factors of safety for short-term and long-term loading conditions? Assume the soil above the groundwater level is saturated. Please discuss the details of your findings! 5 MN Foundation: 4 m x 5 m 21 =1m Stiff clay 22 = 4 m Sample
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Please round to the nearest One (i.e., 1). No Comma! The results of a plate-load test in a clay soil are shown below. The size of the plate is 0.41m x 0.41m. If a square column foundation (3m x 3m) that should carry a load of 2700KN, what is the estimated settlement of the foundation? Load/unit area Settlement (KN/m²) Load/unit area (kN/m?) (mm) 200 600 800 400 200 300 6. 10 400 13 500 20 20 600 29 30 40 50 60 70 Answer = mm Next page page MacBook Air トII F1 F2 F3 F4 F5 F6 FB F9 @ #3 2$ & 2 3 4 7 8 W R Y U S D F G K Settlement (mm)
Q#4: Plate load test performed on a uniform deposit of sand and the following observations were recorded. The size of the plate was 45cm x 45cm. Plot the Pressure-Settlement Curve and determine the safe load on a footing 2m x 2m if the settlement is not to exceed 40mm. Pressure (kPa) 2 4 8 12 16 24 Settlement (mm) 3 6 20 40 60 100 Note: Write the proper answer in word format Subject: Geotechnical Design
A circular footing with a radius of r = 4.0 ft will be embedded D = 2 ft in uniform clay. The top of the foundation is at the surface. The water table is at the ground surface. An intact sample of the clay with Gs=2.75 was obtained using a thin-walled Shelby tube from a depth of 10 ft below the ground surface. The sample was saturated and has a gravimetric water content of 45 %. Estimate its void ratio e0 and total unit weight y _in pcf. Ovp' = 800psf Void Ratio 1.5 1.4 1.3 1.2 1.1 1.0 0.9 0.8 do 10 0.1 0 2 z/r, depth in radii 6 7 8 9 Cr = 0.07 100 1000 Effective Stress (psf) 0.2 0.3 0.4 0.6 0.81.0 7.0 10.0 Cc = 0.3 8.0 9.0 5.0 6.0 I, stress in percent of surface contact pressure 2 3456 8.10 10000 3.0 2.5 (2.0) 1.25 20 30 40 50 60 80 100 1.0 PAG 0.75 Note: Numbers on curves indicate offset distances in radii, x/r. 2r Z 0.5 0₂- KAB X 0.25 IX q 100 0, 10 FIGURE 4.10 Chart for calculating the increase in vertical stress beneath a uniformly loaded circular area. (From NAVFAC DM-7.1, 1982,…
Question 1) For a shallow foundation measuring (1.7 m x 2.2 m) as shown below: , A. Estimate the elastic settlement proposed by Mayerhof. Then, B. Estimate the elastic settlement proposed by Bowles, if the water table rises 1.5 m. Then, Use yw=10 kN/m³ qnet= 1.2 MN/m2 G.S 1.5 m Sand Yd=16 kN/m³ Ysat= 17 kN/m3 %3D 2.5 m N60=52 V W.T. Silty Sand Ya=18 kN/m³ Ysat = 18.5 kN/m? N60=52 3.5 m Sand Ya=19 kN/m3 Ysat = 22 kN/m³ e, = 0.4, Ae=0.04 , o'= 194 kN/m2 5 m Cc= 0.3, Cs= 0.2 , Ca= 0.05 N60=60 CS Scanned with CamScanner
4. A flexible foundation is shown below, determine the immediate settlement below the center of the foundation. Assume the thickness of the soil below the foundation is 20 meters. Following is the variation of the modulus of the soil below the foundation. Es (kN/m²) Depth below the foundation(m) 0-4 4-8 8-20 >20 1.2m 10000 8000 12000 ∞ 90 = BXL = 2m x 2m Us = 0.3 150kPa
Please round to the nearest One (i.e., 1). No Comma! The results of a plate-load test in a clay soil are shown below. The size of the plate is 0.58m x 0.58m. If a square column foundation (3m x 3m) that should carry a load of 3600KN, what is the estimated settlement of the foundation? Load/unit area Settlement (KN/m²) Load/unit area (kN/m³) (mm) 200 400 600 800 200 6. 300 400 13 10 500 20 20 600 29 30 40 50 60 70 Answer = mm Settlement (mm)
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Qia: Compute the depth of drilling required for site investigation purposes. The type of foundation is circular foundation with diameter equal to 12 m, the depth of foundation is 2 m and the stress intensity is q. = 130 kN/m². Assume that average unit weight of soil equal to 18 kN/m². -You may need the following equation AP=q. (1-(1/(1+(B/2z)2)15)) in the solution. the cample disturbance; write the

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