Problem 3Proportion a square footing such that the consolidation settlement is not over 40 mm for the given conditions of Figure 3.580 kNWAWIAWIAWVI1.2 my = 17.29 kN/m3.0WTSoft clayy = 18.86WL = 50%29.6%4.5WN =G, = 2.65%3DFigure: 3

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Answered: Problem 3 Proportion a square footing…

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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A soil profile is provided below. The estimated stresses from a spread footing overlying a 9 meter thick over-consolidated clay layer are: 180.0 kPa (top of the clay layer) 97.2 kPa (middle of the clay layer) 64.3 kPa (bottom of the clay layer) Estimate the primary settlement (in meters) of the clay layer assuming Cc'= Cc/log (1+eo) = 0.22 and Cs' =Cs/log (1+eo)= 0.04 taken from consolidation curves. Assume the pre-consolidation pressure is 215 kPa. Assume no settlement from the overlying sand Depth o (GS) 1- layer. ニ(7.3 SAND KN/m³ -3 m XSAT = 19.8 ELAY 12m
Scenario The wall footing at right is to be constructed to carry an inclined load at 85 degrees with the horizontal, as shown. Assume that there is impenetrable bedrock below the Sample point shown in the figure. 1) Calculate the expected primary settlement of the soil at the Sample point. Also, determine the time it will take for 60% of the expected primary settlement to occur. 2) Determine the factor of safety against bearing failure of the soil for the wall footing if qult of the soil is 160 kN/m2.
A square footing 5 ft by 5 ft supported on a sandy stratum is designed to carry a column loading of 250,000 lb. The unit weight of the sands underlying the footing location vary between 120 and 125 pcf. Estimate the foundation settlement to be expected using the subgrade reaction method. (Neglect the weight of the footing.)
Problem #4 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 62 cm square. The ultimate load per unit are (qu) for the test was found to be 620 kN/m2. What should be the maximum allowable load of a 2.5 m square footing? Use a factor of safety of 3. Answer in N.
A new residence has a column load of 24000 kN. This is supported via a 3m by 4m rectangular footing whose bottom is 1m below the surface of this homogenous lateritic soil layer. 5m below the footing, there is a 6m thick clay layer. The clay layer has a unit weight of 18.0 kN/m³, void ratio (e) of 0.67, and compressibility index (Cc) of 0.237. The lateritic soil has a unit rate of 19 kN/m³ Find the vertical stress increment at the depth of Sm below the centre and corner of the loaded area.
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Define the term critical void ratio.
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FDE 006. The square footing shown carries a load of 3500 KN. Assume that the stress below the footing is distributed at a slope 1H:2V. The clay layer is overconsolidated with OCR=2. Q = 3500kN Vd 17.5kN/m'. Sand- Vsat 18.3kN/m³ Ysat 17.1kN/m² eo=1.4 Refer to FDE 006. Determi the settlement of the overconsolidated clay layer. Select the correct response: 101.819 mm 73.624 mm 37.561 mm 86.241 mm Clay 3m x 3m GWT Cs= 0.06 Cc = 0.38 0.6m 0.6m 1.2m 1.2m

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Problem 3 Proportion a square footing such that the consolidation settlement is not over 40 mm for the given conditions of Figure 3. 580 kN WAWIAWIAWVI 1.2 m y = 17.29 kN/m 3.0 WT Soft clay y = 18.86 WL = 50% 29.6% 4.5 WN = G, = 2.65 %3D Figure: 3