Principles of Geotechnical Engineering (MindTap Course List)
9th Edition
ISBN: 9781305970939
Author: Braja M. Das, Khaled Sobhan
Publisher: Cengage Learning
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Chapter 17, Problem 17.8P
Refer to Problem 17.7 and Figure 17.16. Suppose a footing (1.5 m × 1.5 m) is constructed at a depth of 1 m.
a. Estimate the design values for N60 and
b. What is the net allowable load that the footing can carry? The maximum allowable 17.7 settlement is 25 mm. Use Eqs. (16.56) and (16.61).
Refer to the boring log shown in Figure 17.16. Estimate the average drained friction angle,
Figure 17.16
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Ex1: A footing is uniformly loaded with q = 100 kN/m² as shown in the figure.
Compute the vertical stress increments under Points A, B, and C at z = 10 m.
By
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Footing
12m
Use Vertical stress Increment
under corner of rectangular
footing
7
(Plane view)
6
Chapter 17 Solutions
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- Plate load test performed on a uniform deposit of sand and the following observations were recorded. The size of the plate was 45cm x 45cm. Plot the Pressure-Settlement Curve and determine the safe load on a footing 2m x 2m if the settlement is not to exceed 40mm. Pressure (kPa) 2 4 8 12 |16 24 Settlement 3 6 | 20 | 40 |60 100 (mm)arrow_forwardQia: Compute the depth of drilling required for site investigation purposes. The type of foundation is circular foundation with diameter equal to 12 m, the depth of foundation is 2 m and the stress intensity is q. = 130 kN/m². Assume that average unit weight of soil equal to 18 kN/m². -You may need the following equation AP=q. (1-(1/(1+(B/2z)2)15)) in the solution. the cample disturbance; write thearrow_forwardA rectangular footing is constructed on saturated sand. This footing is placed under 1000 KN column load and 500 KN.m moment as shown in the image. Find the eccentricity in both directions and calculate the equivalent footing size. 3.0 M=500 KN.m 0.50 2.5 P1=1000 KN 0.50arrow_forward
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- o T ☺ ť (Q4): For the soil profile shown in figure (2) find the difference in stress in (kPa) at point located at a depth (10m) under the center of the circular foundation when using the below formulas and when using the approximation method 1 Ao, = q [(R/2)* + 1] Dia4m q0.21 N/mm N.G.S Sand e0.8 G.-2.6 3m W.L e0.7 G-2.7 5m Clayey - Sand e045 G.-2.68 مر ر ل لأعلى لاستعراض الفلاتر إضافة شرح. .. mum < IIarrow_forwardFrom the given soil element, determine the major principal stress, in kPa, using the Pole Method. 150 kPa A 60 kPa 45⁰ 90 kPa 60 kPa Barrow_forwardExample: 1 • A square footing 2.5m x 2.5m is shown in the figure below. Determine the magnitude of the safe gross load (using MEYERHOF'S method and factor of safety of 3) that the footing can carry. 1m Bearing Capacity 1m y = 15kN/m³ c=0 = 35⁰ Yat=19kN/m²arrow_forward
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