Construction Materials, Methods and Techniques (MindTap Course List)
4th Edition
ISBN: 9781305086272
Author: William P. Spence, Eva Kultermann
Publisher: Cengage Learning
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Textbook Question
Chapter 15, Problem 1RQ
What is the key element that influences the properties of iron?
Expert Solution & Answer
To determine
The key element that influence the properties of iron
Answer to Problem 1RQ
Alloying element influence the properties of iron
Explanation of Solution
Iron is found in the earth’s crust in large quantities. It is pure, ductile and has good magnetic properties but undergoes rusting easily. To improve the characteristics of iron, alloying elements are added to it so that it can be used commercially. Elements like manganese, sulfur, silicon and phosphorus are added to iron.
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Q.1 select the lightest W12 shape for column AB that support a service
dead and live loads Po-150k and P-200k as shown in Figure. The
beams and columns are oriented about the major axis and the
columns are braced at top and mid-height using pinned end
connections for out of plane buckling. ASTM A992 steel is used. Select
the suitable answer below:
I
U
B
W18.76
8.00
All dimensions in feet
30.00
8091
B
P
Consider the structure shown in (Figure 1). Suppose that
F = 2500 N.
Figure
0.2 m
1500 N
0.2 m
30%
0.2 m
B
-0.2 m-0.2 m-
F
Part A
Determine the resultant couple moment.
Express your answer to three significant figures and include the appropriate units. Enter positive value if the moment is
counterclockwise and negative value if the moment is clockwise.
ΜΑ
?
1 of 1
MR = 2.85
kN⚫m
√30°
1500 N
AUG
16
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A
W
20
Aa
Example
The 30-N force P is applied perpendicular to the
portion BC of the bent bar. Determine the moment
of P about point B and about point A.
Ans: Mb= 48 N.m
Ma= 81.941 N.m
P = 30 N
1.6 m
45°
B
1.6 m
Chapter 15 Solutions
Construction Materials, Methods and Techniques (MindTap Course List)
Ch. 15 - What is the key element that influences the...Ch. 15 - Prob. 2RQCh. 15 - Prob. 3RQCh. 15 - Prob. 4RQCh. 15 - What are the commonly produced cast irons?Ch. 15 - What are the main properties of white cast iron?Ch. 15 - Why is malleable cast iron less brittle than white...Ch. 15 - How does the alloying element nickel affect the...Ch. 15 - If steel has a carbon content less than 0.90...Ch. 15 - Prob. 14RQ
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