Architectural Drafting and Design (MindTap Course List)
7th Edition
ISBN: 9781285165738
Author: Alan Jefferis, David A. Madsen, David P. Madsen
Publisher: Cengage Learning
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Chapter 42, Problem 42.8Q
To determine
The way in which precast concrete panels are connected.
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Consider the situation in Question 2. If all the cables are made of the same material and have a maximum tensile force of 500 lb, what is the heaviest load that can be supported by the system?
A flexible circular area is subjected to a uniformly distributed load of 148 (see the figure below). The diameter of the load area is 2 . Estimate the average stress increase () below the center of the loaded area between depths of 3 and 6 . Use the equations:
and
(Enter your answer to three significant figures.)
=
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 0.625B below the center using Aσ beneath the corner of a uniform rectangular load given by Aσ =
Variation of Influence Value I
qoI. Use the table below.
n
0.8
1.0
m 0.2 0.4 0.5
0.6
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
=
(b) Determine the vertical stress increase at a depth of 0.625B 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.)
Ασ/90 =
(c) Determine the vertical stress increase at a depth of 0.625B below the center using…
Chapter 42 Solutions
Architectural Drafting and Design (MindTap Course List)
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