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 8, Problem 8.4P
A 10 ft diameter flexible loaded area is subjected to a uniform pressure of 1200 lb/ft2.
- a. Plot the variation of the vertical stress increase beneath the center with depth z = 0 to 20 ft.
- b. In the same plot, show the variation beneath the edge of the loaded area.
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Subject: soil mechanics
I want part b. Please help me with part b. Or can you answer both a and b ?
A 10 ft diameter flexible loaded area is subjected to a uniform pressure of 1200 lbs/ft2.
a. Plot the variation of the vertical stress increase beneath the center with depth z = 0 to 20 ft.
b. In the same plot, show the variation beneath the edge of the loaded area.
refer to the figure due to application of line load q1 and q2 . the vertical stress increase at point a is 42 kn/m2 determine the magnitude of q
Referring to Figure Q2 (a), the vertical stress increase at point A is 25 kN/m2due to application of line loads q1 and q2. Determine the magnitude of q2.
Chapter 8 Solutions
Principles of Foundation Engineering (MindTap Course List)
Ch. 8 - Four point loads with the same magnitude of P are...Ch. 8 - A point load of 500 kN is applied at the ground...Ch. 8 - A point load of 1000 kN is applied at the ground...Ch. 8 - A 10 ft diameter flexible loaded area is subjected...Ch. 8 - For the flexible loaded area in Problem 8.4, plot...Ch. 8 - Two line loads q1 and q2 of infinite lengths are...Ch. 8 - A 9 ft wide and infinitely long flexible strip...Ch. 8 - Figure P8.8 shows a flexible rectangular raft that...Ch. 8 - Prob. 8.9PCh. 8 - Prob. 8.10P
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- Repeat Problem 10.12 for q = 700 kN/m2, B = 8 m, and z = 4 m. In this case, point A is located below the centerline under the strip load. 10.12 Refer to Figure 10.43. A strip load of q = 1450 lb/ft2 is applied over a width with B = 48 ft. Determine the increase in vertical stress at point A located z = 21 ft below the surface. Given x = 28.8 ft. Figure 10.43arrow_forwardRefer to Figure 10.46. A flexible circular area of radius 6 m is uniformly loaded. Given: q = 565 kN/m2. Using Newmarks chart, determine the increase in vertical stress, z, at point A. Figure 10.46arrow_forward2. (10 pts) Refer to Figure 1. Due to application of line load q₁, the vertical stress increase at point A is 30 kN/m². Determine the magnitude of q1. PIEN 91 45° Figure 1 3 m A Aσ₂ 3 marrow_forward
- Prob. 3 The plan of a flexible rectangular loaded area is shown in Figure below. The uniformly distributed load on the flexible area, q, is 100 kN/m². Determine the increase in the vertical stress, Aoz, at a depth of z = 2 m below a. Point A b. Point B c. Point C 4 m 1.6 m 2 m 0.8 m q = 100 kN/m² A 1.2 m-arrow_forwardThe flexible area shown in Figure is uniformly loaded. Given that q = 300kN/m² determine the vertical stress increase at point A. 8m 1.5m-radius 3m A from chart Take value of 16 Plan 300 kn/m All 3m farrow_forwardA flexible square area (2.4 m. x 2.4 m.) is subjected to a uniformly distributed load of q = 178 kN/m2. Determine the increase in vertical stress at the center at a depth of z =7 m.arrow_forward
- The area shown in the figure carries a uniform pressure of 200 kPa. Find the total vertical effective stress at 5 meter below points A and B. Ysa 19 kN/m³ 8 m 5 m 7 m 6 marrow_forwardRefer to Figure 10.40. Determine the vertical stress increase, Aoz, at point A with the following values: q1 = 90 kN/m; q2 = 325 kN/m; x1 = 4 m; x2 = 2.5 m; z = 3 m Line kad - Line load -arrow_forward(5 strip, given: B = 4 m; q = 50 kN/m². Determine the vertical stress increase at A (0, 3m). Refer to the figure. For a linearly increasing vertical loading on an infinite Uunit area (x. z) 9 Cengage Learning 2014arrow_forward
- Refer to Figure attached, Due to the application of line loads q1 and q2, the vertical stress increase, A oz , at A is 30 kN/m2 . Determine the magnitude of q2 91 = 250 kN/m 92 - 3m - 2 m - 2 marrow_forward2 m e = 0.53 Gs = 2.65 A 4 m Dry Sand e = 0.47 6 m Saturated Sand Gs = 2.67 a. Determine the effective stress at point A in kPa. b. Determine the effective stress at point B in kPa. b. Determine the effective stress at point C in kPa. c. Determine how high (m) from point B will the water table rise up so that the effective stress at C is 125 kpa.arrow_forwardA rectangular concrete slab, 3m x 4.5m shown in Figure 05.12, rests on the surface of a soil mass. The load on the slab is 1620 kN.1.) Determine the soil stress below the slab2.) Determine the vertical stress increase at point A3.) Determine the vertical stress increase at point B.arrow_forward
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