Principles of Foundation Engineering
9th Edition
ISBN: 9780357684832
Author: Das
Publisher: Cengage Learning US
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Chapter 16, Problem 16.20P
To determine
Check passive earth pressure coefficient using Equation 16.70 and 16.72 or Table 16.9 and 16.10.
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(a) Calculate and draw the active earth pressure distribution acting on the smooth wall shown in Figure 4. The water
table is at the interface of the soil layers;
2 m
4 m
Sand 1: c= 0, += 30°
7 = 16 kN/m³
Sand 2: c= 0, += 38°
Figure 4
sat = 21 kN/mm³
Please help
For a smooth vertical wall supporting a granular backfill with ϕ' = 34°, determine Ka using Eq. (16.22) for α = 0, 5, 10, 15, and 20 degrees
Chapter 16 Solutions
Principles of Foundation Engineering
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- Determine the active lateral earth pressure on the frictionless wall shown in the figure below. Sketch the lateral earth pressure distributions and calculate the resultant force and its location from the base of the wall. Also, determine the moments of passive and active forces. Neglect seepage effects. Use Rankine's earth pressure method. (w = 10 kN/m) 3.0m Ysat 20 kN/m³ y = 19 kN/m²³ ' = 30° Ysat = 20 kN/m³ y = 18 kN/m³ o = 28 6.0marrow_forwardQ:: For the figure below and by using Khosla's Theory. 1. Find the corrected percentage of pressure at points A and B. 2. Does the floor thickness at points A and B is safe against the uplift pressure? 16 m 14 m +-1m 12 m 5m 4m 18m 5m 22marrow_forwardGEO NO. 5 SOLVE AND SHOW THE COMPLETE SOLUTION.arrow_forward
- Someone can help me with this one pleasearrow_forwardRefer to the Coulumb Active Earth Pressure. Given alpha = 10 degree; Beta=85 degrees;H - 4m;unit weight of soil = 15 kN/m^3; soil friction angle = 30 degree; and sigma=15 degrees. Estimate the active force, Pa, per unit length of the wall. Also, state the direction and location of the resultant force, Pa.arrow_forwardGiven data: Depth of Clay layer =4Depth of Sand layer=2unit weight of clay kN/m3=23unit weight of sand kN/m3 =21Ø in both layers=30C´= 0arrow_forward
- Calculate the active and passive earth pressures AND. determine the distance at which the net active and passive force will acting on the retaining wall Ya=19 kN /m3 - 34 c=3kp 2m 6=34 %3D Vd = 17.54kN/m3 8=32"; ċ=o %3D 1.5m %3D = 21. BkN/m3 V sat 8= 31; c'= o %3D 1.5m %3D Ysat = 22.lkN/m3 5 m 8=30;cioarrow_forwardbbarrow_forwardA smooth vertical retaining wall supporting layered soils is shown in figure. According to Rankine's earth pressure theory, the lateral active earth pressure acting at the base of the wall is _kPa (round off to one decimal place). Surcharge load, q = 20 kPa Smooth vertical retaining wall 3m 4m Layer 1: Bulk unit weight = 18 kN/m³ Angle of internal friction = 32° Cohesion = 0 kPa Layer 2: Bulk unit weight = 19 kN/m³ Angle of internal friction = 25° Cohesion = 20 kPa Base of the wallarrow_forward
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