Fundamentals of Geotechnical Engineering (MindTap Course List)
5th Edition
ISBN: 9781305635180
Author: Braja M. Das, Nagaratnam Sivakugan
Publisher: Cengage Learning
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Chapter 12, Problem 12.9P
(a)
To determine
Find the friction angle
(b)
To determine
Find the friction angle
(c)
To determine
Find the friction angle,
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Fundamentals of Geotechnical Engineering (MindTap Course List)
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- The figure below shows a foundation of 10 ft x 6.25 ft resting on a sand deposit. The net load per unit area at the level of the foundation, qo, is 2100 lb/ft². For the sand, μs = 0.3, E, = 3200 lb/in.², Dƒ = 2.5 ft, and H = 32 ft. Foundation BX L Rigid foundation settlement Flexible foundation settlement H μ, Poisson's ratio E, = Modulus of elasticity Soil Rock Elastic settlement of flexible and rigid foundations Table 1 Variation of F₁ with m' and n' m' n' 1.0 1.2 1.4 1.6 1.8 2.0 2.5 3.0 0.25 0.014 0.013 0.012 0.011 0.011 0.011 0.010 0.010 0.50 0.049 0.046 0.044 0.042 0.041 0.040 0.038 0.038 1.00 0.142 0.138 0.134 0.130 0.127 0.125 0.121 0.118 2.00 0.285 0.290 0.292 0.292 0.291 0.289 0.284 0.279 5.00 0.437 0.465 0.487 0.503 0.516 0.526 0.543 0.551 10.00 0.498 0.537 0.570 0.597 0.621 0.641 0.679 0.707 20.00 0.529 0.575 0.614 0.647 0.677 0.702 0.756 0.797 50.00 0.548 0.598 0.640 0.678 0.711 0.740 0.803 0.853 100.00 0.555 0.605 0.649 0.688 0.722 0.753 0.819 0.872 Table 2 Variation of F2…arrow_forward= == An 8 m high retaining wall supports a 5.5 m deep sand (Ya 18.5 kN/m³, q = 34°) overlying a saturated sandy clay (y_sat = 20.3 kN/m³, q = 28°, c = 17 kPa). The groundwater level is located at the interface of two layers. Sketch the lateral stress distribution up to a depth of 8 m for an active condition. Also, determine the line of action of the resultant. 5.5 m Sand |Y=18.5 kN/m³ |₁ =34° Sandy : clay 2.5 m |c=17 kPa Ysat 20.3 kN/m³ 2=28°arrow_forward3. What is the maximum allowable load that can be applied to the pile shown below? : Qall = ? G.W.T. 45' Soft Clay: Ysat 100 pcf Cu = 500 psf, ou = 0° Clay Shale: Qu(lab) 24,000 psi o' = 15° Driven Steel H-Pile: 1/2" thick steel web & flanges (soil plugged) -10". I Note: Pile & soil profile are not drawn to scale Please use the approach outlined in Das 12.16 and an Allowable Stress Design (ASD) approach for your analysis. Use a factor of safety = 3 for design, neglect any effect that shaft resistance has on pile capacity, and neglect the effect of the weight of the pile in your analysis.arrow_forward
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