EP WEBASSIGN FOR MOAVENI'S ENGINEERING
6th Edition
ISBN: 9780357126592
Author: MOAVENI
Publisher: CENGAGE CO
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Chapter 20, Problem 54P
To determine
Explain about straight line depreciation and provide examples.
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2
A flexible circular area is subjected to a uniformly distributed load of 450 kN/m² (the figure below). The diameter of the load area is 2 m. Estimate the average stress increase (Aσay) below the center of the loaded
area between depths of 3 m and 6 m.
H₂
1.0
H₂
B
0.8
CHI HD DV
0.6
C
1.0
1.5
0.4
0.2
6.0
8.0.
10.0
2.0
2.5
3.0
4.0
5.0
H₁
(Enter your answer to two significant figures.)
Δσαν τ
kN/m²
6
Refer to the figure below. Using the procedure outlined in your textbook, determine the average stress increase in the clay layer below the center of the foundation due to the net foundation load of 45 tons. Use the
equations:
Aσ =
and
qo x B x L
(B+ z)(L+ z)
Aσ av (H2/H₁)
Δσι +44 + Δσο
net load
6
4:5 ft
10 ft
5ft x 5ft
Sand
Sand
y=100 lb/ft³
Ysat 122 lb/ft³:"
Ysat 120 lb/ft³:
0.7
C=0.25
Groundwater
table
C=0.06
Preconsolidation pressure = 2000 lb/ft²
(Enter your answer to three significant figures.)
Ασαν
=
lb/ft²
Refer to the figure below, which shows a flexible rectangular area. Given: B₁ = 4 ft, B₂ = 6 ft, L₁ = 8 ft, and L2 = 10 ft. If the area is subjected to a uniform load of 4100 lb/ft², determine the stress increase at a
depth of 10 ft located immediately below point O. Use the table below.
T
B(1)
3
B(2)
2
L(1)
*
4
L2)
Table 1 Variation of Influence Value I
n
m 0.8
0.9
1.0
1.2
1.4
0.1 0.02576 0.02698 0.02794 0.02926 0.03007
0.2 0.05042 0.05283 0.05471 0.05733 0.05894
0.3 0.07308 0.07661 0.07938 0.08323 0.08561
0.4 0.09314 0.09770 0.10129 0.10631 0.10941
0.5 0.11035 0.11584 0.12018 0.12626 0.13003
0.6 0.12474 0.13105 0.13605 0.14309 0.14749
0.7 0.13653 0.14356 0.14914 0.15703 0.16199
0.8 0.14607 0.15371 0.15978 0.16843 0.17389
0.9 0.15371 0.16185 0.16835 0.1766 0.18357
1.0 0.15978 0.16835 0.17522 0.18508 0.19139
1.1 0.16843 0.17766 0.18508 0.19584 0.20278
(Enter your answer to three significant figures.)
Aσ =
lb/ft²
Chapter 20 Solutions
EP WEBASSIGN FOR MOAVENI'S ENGINEERING
Ch. 20.4 - Prob. 1BYGCh. 20.4 - Prob. 2BYGCh. 20.4 - Prob. 3BYGCh. 20.4 - Prob. 4BYGCh. 20.4 - Prob. 5BYGCh. 20.4 - Prob. BYGVCh. 20.5 - Prob. 1BYGCh. 20.5 - Prob. 2BYGCh. 20.5 - Prob. 3BYGCh. 20.5 - Prob. BYGV
Ch. 20.8 - Prob. 1BYGCh. 20.8 - Prob. 2BYGCh. 20.8 - Prob. 3BYGCh. 20 - Prob. 1PCh. 20 - Prob. 2PCh. 20 - Prob. 3PCh. 20 - Prob. 4PCh. 20 - Prob. 5PCh. 20 - Prob. 6PCh. 20 - Prob. 7PCh. 20 - Prob. 8PCh. 20 - Prob. 9PCh. 20 - Prob. 10PCh. 20 - Prob. 11PCh. 20 - Prob. 12PCh. 20 - Prob. 13PCh. 20 - Prob. 14PCh. 20 - Prob. 15PCh. 20 - Prob. 16PCh. 20 - Prob. 17PCh. 20 - Prob. 18PCh. 20 - Prob. 19PCh. 20 - Prob. 20PCh. 20 - Prob. 21PCh. 20 - Prob. 22PCh. 20 - Prob. 23PCh. 20 - Prob. 24PCh. 20 - Prob. 25PCh. 20 - Prob. 26PCh. 20 - Prob. 27PCh. 20 - Prob. 28PCh. 20 - Prob. 29PCh. 20 - Prob. 30PCh. 20 - Prob. 31PCh. 20 - Prob. 32PCh. 20 - Prob. 33PCh. 20 - Prob. 34PCh. 20 - Prob. 35PCh. 20 - Prob. 36PCh. 20 - Prob. 37PCh. 20 - Prob. 38PCh. 20 - Prob. 39PCh. 20 - Prob. 40PCh. 20 - Prob. 41PCh. 20 - Prob. 42PCh. 20 - Prob. 43PCh. 20 - Prob. 44PCh. 20 - Prob. 45PCh. 20 - Prob. 46PCh. 20 - Prob. 47PCh. 20 - Prob. 48PCh. 20 - Prob. 49PCh. 20 - Prob. 50PCh. 20 - Prob. 52PCh. 20 - Prob. 53PCh. 20 - Prob. 54P
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