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 8, Problem 8.22P
A flexible circular footing of radius R carries a uniform pressure q. Find the depth (in terms of R) at which the vertical stress below the center is 20% of q.
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Chapter 8 Solutions
Fundamentals of Geotechnical Engineering (MindTap Course List)
Ch. 8 - Prob. 8.1PCh. 8 - Prob. 8.2PCh. 8 - Prob. 8.3PCh. 8 - Prob. 8.4PCh. 8 - Prob. 8.5PCh. 8 - Prob. 8.6PCh. 8 - Prob. 8.7PCh. 8 - Prob. 8.8PCh. 8 - Prob. 8.9PCh. 8 - The soil profile at a site consists of 10 m of...
Ch. 8 - Prob. 8.11PCh. 8 - Prob. 8.12PCh. 8 - Prob. 8.13PCh. 8 - Prob. 8.14PCh. 8 - A sand has Gs = 2.66. Calculate the hydraulic...Ch. 8 - Prob. 8.16PCh. 8 - A point load of 1000 kN is applied at the ground...Ch. 8 - Point loads of magnitude 9, 18, and 27 kN act at...Ch. 8 - Refer to Figure 8.13. The magnitude of the line...Ch. 8 - Refer to Figure 8.24. Determine the vertical...Ch. 8 - Consider a circularly loaded flexible area on the...Ch. 8 - A flexible circular footing of radius R carries a...Ch. 8 - The plan of a flexible rectangular loaded area is...Ch. 8 - Refer to Figure 8.26. The circular flexible area...Ch. 8 - Refer to Figure 8.27. The flexible area is...Ch. 8 - Prob. 8.26CTPCh. 8 - Prob. 8.27CTP
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- o T ☺ ť Q2: A ring foundation having load equal to 400kPa is resting on a saturated clay soil layer, the groundwater level is at the natural ground surface. The outer diameter of the foundation ring is 8m. Find the inner radius of the ring foundation if the total stress at a point located 4m beneath the center of the ring foundation equal to 251kPa, knowing that the saturated unit weight of the clay is 16kN/m'. (Use the below formula) Solution:- Aoz = q مر ر ل لأعلى لاستعراض الفلاتر إضافة شرح.. . mum <arrow_forwardA 3m diameter circular footing is transmitting a concentrated load of 1500KN. A). Determine the bearing pressure exerted by this footing into the supporting soil. B). Determine the increase in the vertical stress at a depth of 3m directly below the center of the footing. C). Determine the increase in the vertical stress at a depth of 6m which is located at 2m radially from the center of the footing.arrow_forwardFor the loaded area shown below, determine the increase in vertical stress (4p) at 5 ft below points B and C at the depth of the pipe, which is z = 5 feet below the footing, and 3 feet a way from its edge. The footing has a UDL , q = 1800 lb/ft2. 1,800 B. A 5t 4ft 5t 2 B 10 t 3 ft 10 ft 3 ft PLAN VIEW SECTIONarrow_forward
- A rectangular footing has dimensions shown and is acted upon by a dead load of 668.00 kN and a live load of 551.00 kN. The column dimension is 282x572 mm where the shorter dimension is parallel to B. The thickness of the footing is 564mm. f'c=28 MPa and fy=420 MPa for diameter 20mm bars. A=3.3m and B=5.7m Calculate the ratio of the Ultimate Shear Force to Shear Capacity in one- way shear. Consider critical case only. Answer is 0.6175 (Complete Solution)Aarrow_forward2 m 3m 75 EV 1 m A The footing plan is shown loaded uniformly in a rectangular area. What is the value of the increase of stress of the second or loaded area (Aσ₂) to be subtracted?arrow_forwardFor the footings shown in figure, calculate the increase in stress at point (A) at the depth of (3 m) under the surface of the ground. Point A Line load = 500 kN/m Circular load = 400 kN/m² Strip load = 300 kN/m² 2 m 3 m Total increase in stressarrow_forward
- A clay sanitary pipe is located at a point C below the footing shown below. Determine the increase in the vertical stress Ap at the depth of the pipe, which is z = 5 feet below the footing invert, and 3 feet away from its edge. The footing has a uniformly distributed load q = 1,800 psf. 1,800 5 ft r 2 ft B 10 ft PLAN VIEW 4 ft A T 3 ft 1 9 = B 10 ft SECTION A + 3 ft у с 5 ftarrow_forwardA rectangular footing has dimensions shown and is acted upon by a dead load of 653 KN and a live load of 647 kN. The column dimension is 269x677 mm where the shorter dimension is parallel to B. The thickness of the footing is 442mm. f'c=28 MPa and fy=420 MPa for diameter 20mm bars. A=2.9m and B=4.8m Calculate the ratio of the Ultimate Shear Force to Shear Capacity in one-way shear. Consider critical case only.arrow_forwardFind the effective stress increase in the soil at a depth of 4 m below the footing, and then find the increase in the stress due to a drop of the WT from originally 1 m below the footing to 5 m below the footing. N = 4,500 KN I L= 5 ml 1 I Depth = 4 mi B- 3 m WT-1 WTarrow_forward
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