Principles of Foundation Engineering (MindTap Course List)
9th Edition
ISBN: 9781337705028
Author: Braja M. Das, Nagaratnam Sivakugan
Publisher: Cengage Learning
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Chapter 13, Problem 13.11P
To determine
Find the allowable load carrying capacity of the drilled shaft using Reese and O’Neill method.
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From the figure shown, the soil layer beneath the 203m dam has Kx = 0.3m/day and Kz = 0.4m/day. Determine the following:
• Uplift force per unit length (kN/m)
• Seepage through the foundation (m^3
/day)
An embankment consists of clay fill for which c=25 kPa and angle of internal friction is 260 9from consolidated undrained test with pore pressure measurement) The weight of fill per unit volume is 18.64 kN/m3. Compute the stress in kPa at depth of 20 m. Show free body diagram
a.21.6
b.372.8
c.192.8
d.62.5
A concrete dam is going to be built on a silty/clayey sand stratum overlaying an impermeable bedrock as shown in figure below to provide a water reservoir. What is the uplift pressure in point 2?
A. 22.2kPA
B.27.2KPa
C.29.2kPA
Chapter 13 Solutions
Principles of Foundation Engineering (MindTap Course List)
Ch. 13 - Prob. 13.1PCh. 13 - Prob. 13.2PCh. 13 - Prob. 13.3PCh. 13 - Determine the ultimate load-carrying capacity of...Ch. 13 - For the same data given in Problem 13.4, determine...Ch. 13 - Prob. 13.6PCh. 13 - A 3 ft diameter straight drilled shaft is shown in...Ch. 13 - Prob. 13.8PCh. 13 - Figure P13.9 shows a drilled shaft extending into...Ch. 13 - A free-headed drilled shaft is shown in Figure...
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- It is required to design a cantilever retaining wall to retain a 5.0 m high sandy backfill. The dimensions of the cantilever wall are shown in Figure 15.52 along with the soil properties. Check the stability with respect to sliding and overturning, based on the active earth pressures determined, usinga. Coulomb's earth pressure theory (δ' = 24°), andb. Rankine's earth pressure theory.The unit weight of concrete is 24 .0 kN/m3arrow_forwardA concrete dam retaining water is shown. If the specific weight of the concrete is 23.54 kN/m3, find the maximum pressure on the base. Assume there is no hydrostatic uplift and that the coefficient of friction between dam and foundation soil is 0.48. Y = 5.6 m B = 3.2 m W = 1.6 h = 4.8arrow_forwardA 10 m clay stratum is overlaying a rock stratum. If water table is at the ground surface, calculate the overburden soil pressure at the middle of the clay layer using the ff. properties of clay: ∂sat = 17.95 kn/m3, e = 1.1 , LL = 60%arrow_forward
- Referring to the basic concepts for studying lateral earth pressures, calculate the magnitude of lateral force resulting from an active soil pressure against the back of a frictionless wall 6 m high. The surface behind the wall is level, with the retained soil having an angle of internal friction equal to 37° and a unit weight of 18 kN/m3.arrow_forwardA masonry dam (sp.gr. = 2.4) of trapezoidal cross-section is 20 m high. It has a thickness of 2 m at the top and 14 m at the bottomas shown in the figure.Coef. of friction under the foundation is 0.80 and assuming there is hydrostatic upliftthat varies linearly from one-half the hydrostatic head at the upstream edgeof the dam to zero at the downstream edge.Determinearrow_forwardAn embankment consists of clay fill for which c=25 kPa and angle of internal friction is 260 9from consolidated undrained test with pore pressure measurement) The weight of fill per unit volume is 18.64 kN/m3. Compute the stress in kPa at depth of 20 m. a. 192.8 b. 62.5 c. 21.6 d. 372.8arrow_forward
- A concrete dam retaining water is shown. If the specific weight of the concrete is 23.54 kN/m3, find the factor of safety against overturning. Assume there is no hydrostatic uplift and that the coefficient of friction between dam and foundation soil is 0.48. 4.243 2.344 3.422 4.342arrow_forwardPlease show FBD and be detailed in showing solution. Figure shows a semi-conical buttress. Calculate the total hydrostatic force acting on the surface of this semi-conical buttress.arrow_forwardA dam shown in figure has water 2.7 m high on the vertical upstream side. If unit weight of concrete is 23.5 kN/cu.m, determinea. Minimum width of the base that the resultant falls within the middle thirds. Neglect hyrostatic uplift.b. Minimum coefficient of friction to prevent slidingarrow_forward
- An embankment consists of clay fill for which c=25 kPa and angle of internal friction is 260 (from consolidated undrained test with pore pressure measurement) The weight of fill per unit volume is 18.64 kN/m3. Compute the effective stress in kPa at a depth of 20 m. If the pore pressure at this point is shown by a piezometer to be 180 kPa. a. 62.5 b. 372.8 c. 192.8 d. 21.6arrow_forwardPlease be detailed and clear with your solution. Figure shows a semi-conical buttress. Calculate the total hydrostatic force acting on the surface of this semi-conical buttress.arrow_forwardA concrete dam retaining water is shown below, if the specific weight of concrete is 23.5 KN/m, find the factor of safety against sliding, the factor of safety against overturning, and the pressure intensity on the base. coefficient of friction between dam and foundation soil is 0.45 ? (y water 9.8 KN/m').arrow_forward
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