Q4Two 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 AoP 600 kNP = 600 kN15 mFoundation A1.5 m x 1.5 mFoundation B1.5 mx 1.5 m0.8 m0.8 mSand2 mT=18 kN/m3E 20 MPa, ¥*0,33.5mClay4.5 mYeat 19 kN/m3m, = 0.2 m2/MN,C, = 107 m2/s3 mHighly permeable bedrock

Given:- Clay:-γsat=19kN/m3mv=0.2m2/MNcv=10-7m2/sSand:-γt=18kN/m3E=20MPaFOundation A=Foundation…

Answered: Q4 Two identical rigid foundations are…

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter17: Subsoil Exploration

Section: Chapter Questions

Problem 17.10P

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The square footing shown in the figure carries a load of 3500 kN. Assume that the stress below the footing is distributed at a slope of 1H:2V. The clay layer is overconsolidated with OCR=2. Pls answer asap. 3 decimal places.
CEN-333 Geotechnical
Problem 1 A 3m x 3m square footing is constructed at a depth of 2m in a 26m deep clay layer with following soil properties: g =16.5kN/m3, Normally Consolidated Clay, eo= 0.65, Cc = 0.25,ms=5 and Es= 6.0 MN/m2. If there is a 1000kN structural load on the footing, calculate the consolidation settlement of the footing. A 2m X 2m footing carrying 1400kN load is constructed in a site with 2.5m thick clay layer under a 2.5m thick sand layer. If the footing and the ground water table are located at 1.5m below the surface, calculate the consolidation settlement of the footing. You may assume the following soil properties: for sand gsat = 19.25kN/m3 and gt = 7kN/m3, and for clay eo= 0.65, Cc = 0.25, Cs = 0.06, s’p = 200kN/m2 and gsat =19.25kN/m3. A 1882kN load is carried by a 2.6m x 2.6m square footing at a depth of 1.4m in a 30 m deep sand layer. Given the following soil properties for soil calculate the total settlement of the footing after 10 years. Where soil properties are: g = 15.9…
CEN 333 Geotechnical
ANSWER MUST BE EXACT: Sf = 0.0404 m
Subject: Geotechnical engineering
A square footing of dimension 1.5m x 1.5m carries a load of 890 kN as shown in the image: Determine the following: (d) primary settlement for normally consolidated clay using exact equation for additional pressure at midpoint of clay. (e) primary settlement for normally consolidated clay using approximate equation for additional pressure at midpoint of clay.
The figure below shows a proposed foundation site, with 10 ft of sand overlying 20 ft of clay with consolidation properties shown. The clay is normally consolidated. Assume 1-D conditions.a. Compute the initial σ′v at the middle of the clay layer prior to excavation and constructionb. After excavation and during construction, the foundation area will be heavily loaded with the structure and equipment so that σ′v at the middle of the clay layer will be increased to 3900 psf. Determine the settlement that will occur under these conditionsc. After construction is completed, the equipment will be removed and the final σ′v at the middle of the clay layer will be 3200 psf. Compute the swell that occurs after the equipment is removed
The allowable settlement for the proposed continuous footing in the figure below is 50 mm. Using the classical method and showing all steps and equations, compute its consolidation settlement, de and determine if it satisfies this criterion. (The Soil is silty Clay: su= 150 kPa and y = 19 kN/m', C/(1+e) =0.12, C/(1+e)=0.025, o'm= 200 kPa, Yw = 9.8 kN/m³; Concrete: y. = 23.6 kN/m³, r =0.85). 500 kN/m 0.6 m 1.8 m. 6 m Water Table
The soil profile for a future building construction site is shown in the following figure. The proposed footing is a 6.0 m diameter circular one with q = 200 kN/m² as shown. Estimate the final primary consolidation settlement of the 5 m thick normally consolidated clay layer. r = 3.0 m - q = 200 kN/m² 5.3 20: Sand Ydry 6.8 12.5 17.5 z, m -0-- = 18.6 kN/m³ W.T. Sand Ywet = 19.0 kN/m³ Clay Ywet = 18.5 kN/m³ eo = 0.86, LL = 42, PL = 18 Gravel Ywet = 19.2 kN/m³
1- Depth of B.H ==> depth of borehole 2- Bearing capacity for the soil under the footing. ==> hansen equation 3- Immediate settlement for the soil under footing. ==> Si 4- Find the time required for 100% degree of consolidation

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