Elementary Surveying, Global Edition
14th Edition
ISBN: 9781292060491
Author: Charles D. Ghilani, Paul Wolf
Publisher: PEARSON
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Chapter 5, Problem 5.10P
To determine
Error in the 30m sight.
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A square flexible foundation of width B applies a uniform pressure go to the underlying ground.
(a) Determine the vertical stress increase at a depth of 0.5B below the center using Aσ beneath the corner of a uniform rectangular load given by Aσ
Variation of Influence Value I
m
n
0.5
0.6
0.8
1.0
0.2
0.4
0.2 0.01790 0.03280 0.03866 0.04348 0.05042 0.05471
0.4 0.03280 0.06024 0.07111 0.08009 0.09314 0.10129
0.5 0.03866 0.07111 0.08403 0.09473 0.11035 0.12018
0.6 0.04348 0.08009 0.09473 0.10688 0.12474 0.13605
0.8 0.05042 0.09314 0.11035 0.12474 0.14607 0.15978
1.0 0.05471 0.10129 0.12018 0.13605 0.15978 0.17522
(Enter your answer to three significant figures.)
Ασ/90 =
Activity Frame
(b) Determine the vertical stress increase at a depth of 0.5B below the center using the 2 : 1 method equation below.
90 x B x L
Aσ =
(B+ z) (L+ z)
(Enter your answer to three significant figures.)
Δσ/90
=
(c) Determine the vertical stress increase at a depth of 0.5B below the center using stress isobars in…
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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
Chapter 5 Solutions
Elementary Surveying, Global Edition
Ch. 5 - Prob. 5.1PCh. 5 - Prob. 5.2PCh. 5 - Prob. 5.3PCh. 5 - Prob. 5.4PCh. 5 - Prob. 5.5PCh. 5 - Prob. 5.6PCh. 5 - Prob. 5.7PCh. 5 - Prob. 5.8PCh. 5 - Prob. 5.9PCh. 5 - Prob. 5.10P
Ch. 5 - Prob. 5.11PCh. 5 - Prob. 5.12PCh. 5 - Prob. 5.13PCh. 5 - Prob. 5.14PCh. 5 - Prob. 5.15PCh. 5 - Prob. 5.16PCh. 5 - Prob. 5.17PCh. 5 - Prob. 5.18PCh. 5 - Prob. 5.19PCh. 5 - Prob. 5.20PCh. 5 - Prob. 5.21PCh. 5 - Prob. 5.22PCh. 5 - Prob. 5.23PCh. 5 - Prob. 5.24PCh. 5 - Prob. 5.25PCh. 5 - Prob. 5.26PCh. 5 - Prob. 5.27PCh. 5 - Prob. 5.28PCh. 5 - Prob. 5.29PCh. 5 - Prob. 5.30PCh. 5 - Prob. 5.31PCh. 5 - Prob. 5.32PCh. 5 - Prob. 5.33PCh. 5 - Prob. 5.34PCh. 5 - Prob. 5.35PCh. 5 - Prob. 5.36PCh. 5 - Prob. 5.37P
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