Question: A 600 kN column load is to be supported on a 1.5 m circular footing of a residential building. The soil below the footing is a 4.5 m silty sand soil with the following properties: unit weight of soil is 18.5 kN/m², ớm = 25 kPa, c/(1 + es) = 0.009, c,/(1 + e,) = 0.003, µg = 0.35, %3D and E, = 8000 kPa. The groundwater table is at 0.5 m depth below the ground surface, and the depth of the footing is 1 m below the ground surface. • Compute the maximum total settlement of the footing assuming it is a rigid plate, and no secondary consolidation settlement will occur. • If the allowable total settlement is 30 mm, check if the footing satisfies settlement requirements. Note that the bedrock soil layer is located at depth 4.5 m, and the induced stress must be determined using the simplified approach.

Question: A 600 kN column load is to be supported on a 1.5 m circular footing of a residential building. The soil below the footing is a 4.5 m silty sand soil with the following properties: unit weight of soil is 18.5 kN/m², ớm = 25 kPa, c/(1 + es) = 0.009, c,/(1 + e,) = 0.003, µg = 0.35, %3D and E, = 8000 kPa. The groundwater table is at 0.5 m depth below the ground surface, and the depth of the footing is 1 m below the ground surface. • Compute the maximum total settlement of the footing assuming it is a rigid plate, and no secondary consolidation settlement will occur. • If the allowable total settlement is 30 mm, check if the footing satisfies settlement requirements. Note that the bedrock soil layer is located at depth 4.5 m, and the induced stress must be determined using the simplified approach.

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

See similar textbooks

Similar questions

H← N M 1m QUESTION 2: Check if the base area of 2m x 2m is adequate for the footing under the loading shown in the figure. Allowable soil pressure is 0.25 MPa. N = 900 KN M = 150 kNm H=75kN
Pls answer asap
2- Determine the stress increase below the center of the footing using both theoretical and approximate methods at the top, middle and bottom of the clay layer. In addition, determine the average stress increase for the clay layer. Dimensions in Heights in m Unit weights in kN/m3 kN m P2 H1 H2 H3 BL Hw 2.5 Yoati 18.0 19.0 3.0 3.0 2.0 16.0 2 3 1174 Load - 0 Hw H1 H2 H3 OSand Clay (hoemally conactiduted)
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 Q - 3500 kN 4mx Sm 0.6 m Ya - 17.5 kN/m Sand 0.6 m GWT Sand 1.2 m 7'= 8.49 kN/m Yrat = 17.1 kN/m Clay e, = 1.4 C, = 0.06 = 0.38 1.2 m etermine the settlement of the clay layer.
A 3 ft square footing carries a sustained load of 10.6kips. It is placed on the surface of a 30 ft thick saturated overconsolidated clay underlain by dense sand. Based on laboratory tests, the clay can be adequately modeled using the e-log-p method. The laboratory tests provide the following compressibility information for the clay: y = 123.4lb/ft³ Cc = 0.064 1+eo Cr 1+eo Aom = 920lb/ft² The groundwater table is located at the ground surface. Estimate the primary consolidation occurred in the clay layer. Solution: Preliminary Calculations: 1). It should be adequate to compute the compressibility to a depth of = 0.0024 2). Layer thickness = ft; 2). Bearing pressure at the bottom of the footing: q = Primary consolidation for each layer: a). Layer 1: 1). depth to layer midpoint = 2). Total vertical stress at midpoint: Oz ft; 3). Pore water pressure at midpoint: u = 4). Effective vertical stress at minpoint: Oz! 6). Induced vertial stress: Az = = = 9). The type of this layer of soil is :…
Hello and hope your help with foundation CEE 430 thanks
Hope your help CE 430 foundation thanks
Figure shows the geometry of a strip footing supporting the load bearing walls of a three storied building and the properties of clay layer. モ S G Y bulk = 18 kN/m³ Y GWT 1m Strip footing + 1.2 m → Clay layer 6 m C. = 0.08, e, = 0.40 Y sat = 20 kN/m³ Hard stratum If the elastic modulus and the Poisson's ratio of the clay layer are respectively 50x10° kPa and 0.4 and if the influence factor for the strip footing is 1.75, the elastic settlement of the footing will be
A proposed office building will include a 10 ft x10 ft square, 3 ft deep (the footing height is also 3 feet) spread footing. The normally consolidated clay has the following engineering properties: Ydry = 115.0 pcf $'=24° c'= 90.0 psf Cc/(1+eo) = 0.15 The soil stratum extends to a great depth, and the ground water table is 50 ft below the ground surface. What is the maximum bending moment from the earthquake that this foundation can support? Consider bending moment only about one axis.
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.
can you answer me?
At a development site in Cebu City, a plate-load test was conducted on soil whose properties resemble that of sand. The plate used in this PLT is 52 cm square. The ultimate load per unit area (qu) for the test was found to be 420 kN/m?. What should be the maximum allowable load of a 2m square footing? Use a factor of safety of 3. Answer in N 1,553,160.55 2,153,846.15 (with margin: 1)