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 17.2P
To determine
Find the area ratio for each case and determine the suitability for each sampler for the given soil characterization tests.
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Following are the data of gauge and discharge collected at a particular section of the river by stream gauging operation.
Gauge reading
Discharge
Gauge reading
Discharge
(m)
(cms)
(m)
(cms)
7.65
15
8.48
170
7.70
30
8.98
400
7.77
57
9.30
600
7.80
39
9.50
800
7.90
60
89
10.50
1500
7.91
100
11.10
2000
8.08
150
11.70
2400
1. Develop a rating curve for this stream at this section for use in estimating the discharge for a known gauge reading and fit a
linear regression equation for use in estimation of stage for a known value of discharge. Use a value of 7.50 as the gauge
reading corresponding to zero discharge. (20 pts) Equation 1 arith
2. What is the coefficient of correlation of the derived relationship? (10 pts) R2² arith
Equation 2 log
R2 log
3. Determine the stage for a discharge of 3500 cms (5 pts)
4. Determine the discharge for a stage of 15 m (5 pts)
NB Do both arithmetic and logarithmic plots
Q2/ A (2m x 4 m) rectangular flexible foundation is placed above the ground
surface (G.S) for two layers of clay, each layer 10 m thick. The modulus of
Elasticity (E.) of the upper layer is 13 MN/m² and that of the lower layer is
15 MN/m². The Poisson ratio is (u, = 0.6) for the two layers. The pressure (stress) of
100 kN/m²is distributed along the surface of foundation. Determine the rigid
immediate settlement at the corner of the foundation using Elastic theory method?
Chapter 17 Solutions
Principles of Geotechnical Engineering (MindTap Course List)
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- Q1/ Find the maximum allowable load for a square foundation (3 m x 3 m) placed vertically in cohesive soil? (Use Terzaghi equation) Note: Yt=Yeat=18 kN/m³ Depth of foundation = 1.5 m Depth of water table below the ground surface = 0.8 m Factor of safety 3 C=20 Yw = 10 kN/m³ = No vertical or inclined loadsarrow_forwardP.3.3 Oil of sp.gr. 0.9 flows through a vertical pipe (upwards). Two points A and B one above the other 40 cm apart in a pipe are connected by a U-tube carrying mercury. If the difference of pressure between A and B is 0.2 kg/cm², 1- Find the reading of the manometer. 2- If the oil flows through a horizontal pipe, find the reading in manometer for the same difference in pressure between A and B. Ans. 1- R= 0.12913 m, 2- R = 0.1575 m,arrow_forwardPlease solve the question by hand with a detailed explanation of the steps.arrow_forward
- Please solve the question by hand with a detailed explanation of the steps.arrow_forwardP.3.4 A mercury U-tube manometer is used to measure the pressure drop across an orifice in pipe. If the liquid that flowing through the orifice is brine of sp.gr. 1.26 and upstream pressure is 2 psig and the downstream pressure is (10 in Hg) vacuum, find the reading of manometer. Ans. R=394 mm Hgarrow_forwardProject management questionarrow_forward
- project management questionarrow_forwardproject management question Q5/Barrow_forwardProblem 1: Given: In a given floor system, a 5-in concrete slab supported by T-beams of 24-ft spans, supporting 354 psf live load. The T-beams are spaced 2x4 ft on center, and bw (width of the beam web) = 15 inches. Total T-beam height is 25 inches. f'c = 4,000psi, fy = 60,000psi. Design the T-beam. Show all steps. Sketch your Design. Problem 2: Given: A 25"x25" column is subject to a factored axial load of Pu=1,200 kips, and factored design moment of Mu-354 kips-ft. f'c 4,000psi, fy = 60,000psi. Determine the required steel ratio (p) and ties. Sketch the design. 2.0 0.08 INTERACTION DIAGRAM R4-60.9 fc-4 ksi 1.8 1,- 60 ksi 0.07 Y=0.9 16 1.6 0.06 Kmax 0.05 1.4 f/f, = 0 0.04 00 K₁ = P₁/f'c Ag 1.2 12 0.03 0.25 1.0 10 0.02 0.01 0.8 0.6 0.4 €,= 0.0035 0.2 €,= 0.0050 0.0 h yh 0.50 0.75 1.0. 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 R₁ = P₁e/f'Agharrow_forward
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