Wednesday, September 30, 2020

#314 When the high temperature superconductor

When the high temperature superconductor - Civil Engineering

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The structure consists of a collar at B that is free to slide along a straight fixed bar AC. Mounted on the collar is a frictionless pulley, around which a cable supporting a 5 lb weight is wrapped. The collar is further supported by a bar BD.

(a) If a =0°, determine the force in bar BD needed to keep the system in equilibrium.

(b) Determine the value of a that will provide for the smallest force in bar BD, and determine the value of this force.

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Sunday, September 27, 2020

#286 Intensity of a blast loading is represented

Intensity of a blast loading is represented - Civil Engineering

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ChemistryExplain “#286 Intensity of a blast loading is represented in Civil Engineering, Civil engineering career, Civil engineering companies near
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Intensity of a blast loading is represented by is w = [(40x - x2)/40] lb/in., where x is measured in inches. Determine the magnitude and location of the line of action of the resultant force.

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ChemistryExplain “#286 Intensity of a blast loading is represented in Civil Engineering, Civil engineering career, Civil engineering companies near


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Wednesday, August 26, 2020

#142 A Fink truss is loaded as shown, calculate the forces

A Fink truss is loaded as shown, calculate the forces - Civil Engineering 

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ChemistryExplain “#142 A Fink truss is loaded as shown, calculate the forces in Civil Engineering, Civil engineering career, Civil engineering companies near
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A Fink truss is loaded as shown, calculate the forces in members BD, CD and CE. Assuming the members are pin connected and span to be 15ft.
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Tuesday, July 21, 2020

#84 Case - Jack Strong is seated between Tom Evans

Case - Jack Strong is seated between Tom Evans - Civil Engineering

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jack
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Q1: CASE 20 'Innocent Comment?'
Jack Strong is seated between Tom Evans and Judy Hanson at a dinner meeting of a local industrial engineering society. Jack and Judy have an extended discussion of a variety of concerns, many of which are related to their common engineering interests. At the conclusion of the dinner, Jack turns to Tom, smiles, and says, "I'm sorry not to have talked with you more tonight, Tom, but Judy's better looking than you."
Judy is taken aback by Jack's comment. A recent graduate from a school in which more than 20 percent of her classmates were women, she had been led to believe that finally the stereotypical view that women are not as well suited for engineering as men were finally going away. However, her first job has raised some doubts about this. She was hired into a division in which she is the only woman engineer. Now, even after nearly 1 year on the job, she has to struggle to get others to take her ideas seriously. She wants to be recognized first and foremost as a good engineer.
So, she had enjoyed talking shop with Jack. But she was stunned by his remark to Tom, however, innocently it might have been intended. Suddenly, she saw the conversation in a very different light. Once again, she sensed that she was not being taken seriously enough as an engineer.
a. How should Judy respond to Jack's remark?
b. Should she say anything?
c. Assuming Tom understands her perspective, what, if anything, should he say or do?
Q2: John is representing his company in a country where corruption is widespread. A contractor offers him a bribe. If John does not accept the bribe, the contractor will still offer it to someone else who has more power/influence. If he accepts the bribe, he will do something illegal or at least violate his own conscience. The donation strategy sometimes offers a middle solution. Instead of accepting the bribe, John can direct it to a charity.
• Is it still a bribe? Analyze your answer

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1 (a). The comment made by Jack on appearance and looks is definitely not acceptable and is inappropriate, but Judy wants to be first and foremost recognized as an Engineer must be least bothered about the discriminatory comment but also if she does not respond to such comments, it would promote the behavior of Jack.
So, Judy should respond to Jack that making such comments would not be encouraged under any circumstances and explain to Jack that " A Persons work and his Moral grounds should be taken criteria to Talk or conduct any alliances rather than his appearances", this is the sole morality one should follow.
(b). Yes, She should explain to Jack that he made a mistake and should always care about what one speaks although it was intended from Jacks's side, it was not correct.
(c). Yes, Definitely Tom should also remark and explain to Jack about his inappropriate comments and his sayings, commenting on anyone's facial appearance is not good but a person should always be identified from his works and abilities.
2. Yes, the money taken for any illegal work even if it is utilized for good deeds like charity is always termed as Bribe and should not be practiced. The contractor may get the work done from any other person, but if John accepts the amount, he will be a partner in crime and may be held responsible for his doings, and it may result in causing a threat to the public or any individual directly or indirectly, hence he should never accept the bribe or illegal money. The charity work should always be done using hard-earned money and with a good perspective, if a charity is done with money earned from wrong deeds, the person is committing sin by indulging all the innocent's life who will utilize that money.
A bribe always marks a wrong or threat to innocents life and hence must be stopped using a chain of thoughts and moral teachings.

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Thursday, July 16, 2020

#77 Draw the free body diagram - civil engineering

Draw the free-body diagram - Civil Engineering

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#76 The soil and the cost per cubic meter

The soil and the cost per cubic meter - Civil Engineering

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The soil and the cost per cubic meter
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A proposed embankment fill requires 3500 m3 of compacted soil. The void ratio of the compacted fill is specified as 0.65. Four borrow pits are available, as described in the following table, which lists the respective void ratios of the soil and the cost per cubic meter for moving the soil to the proposed construction site. Make the necessary calculations to select the pit from which the soil should be bought to minimize the cost. Assume Gs to be the same at all pits.
Borrow pit Void ratio Cost ($/m3)
A 0.85 9
B 1.2 6
C 0.95 7
D 0.75 10

Free Chegg Answer

Step 1

Find the dry unit weight  using the formula.
 â€¦â€¦ (1)
Here,  is specific gravity of soil solids,  is unit weight of water, and e is void ratio.
Substitute  for  and 0.65 for e.
 â€¦â€¦ (2)
Find the dry unit weight soil required for  compacted soil using Equation (2).

Thus, the volume of soil to be excavated from borrow pit is .
Find the dry unit weight of soil for borrow pit A using Equation (1).
Substitute  for  and 0.85 for e.

Similarly, calculate for borrow pit B, C, and D and tabulate the values in Table (1).

Step 2

Find the volume to be excavated (V) from the borrow pit A using the calculation.

Substitute  for .

Similarly, calculate for borrow pit B, C, and D and tabulate the values in Table (1).
Find the total cost for borrow pit A using the formula.

Substitute  for V and 9$ for cost.

Similarly, calculate for borrow pit B, C, and D and tabulate the values in Table (1).

Step 3

Tabulate dry unit weight, volume, and total cost for borrow pit A, B, C, and D as in Table (1).
Borrow pit Void ratio (e)  at borrow pit  Cost  Total cost ($)
A 0.85 3926.2 9 35,335.8 $
B 1.2 4665.7 6 27,994.2 $
C 0.95 4128.8 7 28,959 $
D 0.75 3709.3 10 37,093 $
Thus, the  soil should be bought to minimize the cost.

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