Principles of Highway Engineering and Traffic Analysis
6th Edition
ISBN: 9781118879078
Author: Mannering
Publisher: WILEY
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Chapter 7, Problem 25P
To determine
The approach’s total vehicle delay two full cycles after the given arrival rate begins.
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A 2.0 m wide strip foundation carries a wall load of 350 kN/m in a clayey soil where y = 17 kN/m³, c' = 5.0 kN/m²
and 23°. The foundation depth is 1.5 m. For o' = 23°: Nc = 18.05; N = 8.66; N = 8.20.
Determine the factor of safety using the equation below.
1
qu = c' NcFcs Fed Fci +qNqFqs FqdFqi + ½ BN F√s 1
2
(Enter your answer to three significant figures.)
s Fyd Fi
FS =
1.2 m
BX B
70 kN.m
y = 16 kN/m³
c' = 0
6'-30°
Water table
Ysat
19 kN/m³
c' 0
&' = 30°
A square foundation is shown in the figure above. Use FS = 6, and determine the size of the foundation. Use the Prakash and Saran theory (see equation and figures below). Suppose that F =
450 kN.
Qu
= BL
BL[c′Nc(e)Fcs(e) + qNg(e)Fcs(e) + ·
1
YBN(e) F
2
7(e) Fra(e)]
(Enter your answer to two significant figures.)
B:
m
Na(e)
60
40-
20-
e/B=0
0.1
0.2
0.3
.0.4
0
0
10
20
30
40
Friction angle, ' (deg)
Figure 1 Variation of Na(e) with o'
Ny(e)
60
40
20
e/B=0
0.3
0.1
0.2
0.4
0
0
10
20
30
40
Friction angle, ' (deg)
Figure 2 Variation of Nye) with o'
K/S
46. (O
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Chapter 7 Solutions
Principles of Highway Engineering and Traffic Analysis
Ch. 7 - Prob. 1PCh. 7 - Prob. 2PCh. 7 - Prob. 3PCh. 7 - Prob. 4PCh. 7 - Prob. 5PCh. 7 - Prob. 6PCh. 7 - Prob. 7PCh. 7 - Prob. 8PCh. 7 - Prob. 9PCh. 7 - Prob. 10P
Ch. 7 - Prob. 11PCh. 7 - Prob. 12PCh. 7 - Prob. 13PCh. 7 - Prob. 14PCh. 7 - Prob. 15PCh. 7 - Prob. 16PCh. 7 - Prob. 17PCh. 7 - Prob. 18PCh. 7 - Prob. 19PCh. 7 - Prob. 20PCh. 7 - Prob. 21PCh. 7 - Prob. 22PCh. 7 - Prob. 23PCh. 7 - Prob. 24PCh. 7 - Prob. 25PCh. 7 - Prob. 26PCh. 7 - Prob. 27PCh. 7 - Prob. 28PCh. 7 - Prob. 29PCh. 7 - Prob. 30PCh. 7 - Prob. 31PCh. 7 - Prob. 32PCh. 7 - Prob. 33PCh. 7 - Prob. 34PCh. 7 - Prob. 35PCh. 7 - Prob. 36PCh. 7 - Prob. 37PCh. 7 - Prob. 38PCh. 7 - Prob. 39PCh. 7 - Prob. 40PCh. 7 - Prob. 41PCh. 7 - Prob. 42PCh. 7 - Prob. 43PCh. 7 - Prob. 44PCh. 7 - Prob. 45PCh. 7 - Prob. 46PCh. 7 - Prob. 47PCh. 7 - Prob. 48PCh. 7 - Prob. 49PCh. 7 - Prob. 50PCh. 7 - Prob. 51PCh. 7 - Prob. 52PCh. 7 - Prob. 53PCh. 7 - Prob. 54PCh. 7 - Prob. 55PCh. 7 - Prob. 56PCh. 7 - Prob. 57PCh. 7 - Prob. 58PCh. 7 - Prob. 59PCh. 7 - Prob. 60PCh. 7 - Prob. 61PCh. 7 - Prob. 62P
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