Construction Materials, Methods and Techniques (MindTap Course List)
4th Edition
ISBN: 9781305086272
Author: William P. Spence, Eva Kultermann
Publisher: Cengage Learning
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Chapter 1, Problem 11RQ
To determine
The purpose of a Material Data Sheet
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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?
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 loads
Chapter 1 Solutions
Construction Materials, Methods and Techniques (MindTap Course List)
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- P.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_forwardPlease solve the question by hand with a detailed explanation of the steps.arrow_forward
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- project 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_forwardGiven: 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.arrow_forward
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