STEEL DESIGN W/ ACCESS
6th Edition
ISBN: 9781337761499
Author: Segui
Publisher: CENGAGE L
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Question
Chapter 7, Problem 7.9.5P
To determine
(a)
The size of the bolt using Load and Resistance Factor Design (LRFD) method.
To determine
(b)
The size of the bolt.
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Problem 1
You are in the process of designing a water supply system for the whole lligan City, and
the design life of your system is to end in the year 2070. The population in the town has
been measured every 10 years since 1980 by the Philippine Statistics Authority, and the
reported populations are tabulated below. Estimate the population in the town using (a)
arithmetic growth projection, (b) geometric growth projection (exponential formula), (c)
declining growth projection (assuming a saturation concentration of 480,000 people), and
(d) logistic curve projection.
Year
Population
1980
167,358
1990
226,568
2000
285,061
2010
322,821
2020
342,618
A frame is loaded by a force Q = 280 N and supported by pins at points B and C as shown below. The distances are given as a = 0.4 m, b = 0.8 m, c = 0.6 m, d = 2.6 m, and e = 1.5 m.
b
C
с
d
a
A
B
Q
D
e
Determine the reactions at joints B and C. Report all answers in units of N with 2 decimal places of precision. Positive signs indicate that a force component acts in the positive axis direction (i.e. up or
right), while a negative sign should be used to indicate a force component acting in a negative axis direction (i.e. down or left).
The x-component of the reaction force at joint B, Bx =
NⓇ
The y-component of the reaction force at joint B, By
=
NⓇ
NⓇ
The x-component of the reaction force at joint C, Cx =
The y-component of the reaction force at joint C, C₁ =
N
Number
D
Ø
A vertical pole supports a horizontal cable CD and is supported by a ball-and-socket joint at A as shown in the figure below. Cable CD is parallel to the x-z plane (which implies that a vector from C to
D has no y-component) and is oriented at an angle = 20° from the x-y plane. The distances are given as h = 10 m, b = 6 m, a = 9 m, and d = 4 m.
y
a
b
B
The magnitude of the tension force in cable BE, TBE =
KN
® F®
Determine the following forces for this system if there is a 15 kN tension carried in cable CD. Report all answers in units of kN with 1 decimal place of precision. For the components of the reaction at
A, be sure to use a positive or negative sign to indicate the direction of the force (negative signs if the force acts in the negative axial direction).
The magnitude of the tension force in cable BF, TBF
=
KN
The x-component of the reaction at joint A, Ax
The y-component of the reaction at joint A, A,
®®®
The z-component of the reaction at joint A, Az =
=
KN
=
KN
KN
Chapter 7 Solutions
STEEL DESIGN W/ ACCESS
Ch. 7 - Prob. 7.3.1PCh. 7 - Prob. 7.3.2PCh. 7 - Prob. 7.4.1PCh. 7 - Prob. 7.4.2PCh. 7 - Prob. 7.4.3PCh. 7 - Prob. 7.4.4PCh. 7 - Prob. 7.4.5PCh. 7 - Prob. 7.4.6PCh. 7 - Prob. 7.6.1PCh. 7 - Prob. 7.6.2P
Ch. 7 - Prob. 7.6.3PCh. 7 - Prob. 7.6.4PCh. 7 - Prob. 7.6.5PCh. 7 - Prob. 7.6.6PCh. 7 - Prob. 7.7.1PCh. 7 - Prob. 7.7.2PCh. 7 - Prob. 7.7.3PCh. 7 - Prob. 7.8.1PCh. 7 - Determine the adequacy of the hanger connection in...Ch. 7 - Prob. 7.9.1PCh. 7 - Prob. 7.9.2PCh. 7 - Prob. 7.9.3PCh. 7 - Prob. 7.9.4PCh. 7 - Prob. 7.9.5PCh. 7 - Prob. 7.11.1PCh. 7 - Prob. 7.11.2PCh. 7 - Prob. 7.11.3PCh. 7 - Prob. 7.11.4PCh. 7 - Prob. 7.11.5PCh. 7 - Prob. 7.11.6PCh. 7 - Prob. 7.11.7PCh. 7 - Prob. 7.11.8PCh. 7 - Prob. 7.11.9PCh. 7 - Prob. 7.11.10P
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