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9/20/2017

Review Test Submission: 2017 Mid-semester quiz – 200470 ...

Question 1

2.66667 out of 4 points

Choose all correct answers. Strength reduction factors are used to account for the uncertainty and risks involved in evaluating the structural resistance of a member or system. Why are they needed? Selected Answers:

A. Material imperfections and manufacturing quality C. Errors in modelling and analysis

Correct Answers:

A. Material imperfections and manufacturing quality B. Rounding and approximations in modelling and analysis C. Errors in modelling and analysis

Question 2

2.66667 out of 4 points

Choose all correct answers. Which of the following statements are true when we consider lateral buckling of a steel member? B. It can happen suddenly https://vuws.westernsydney.edu.au/webapps/assessment/review/review.jsp? attempt_id=_12643715_1&course_id=_22345_1&content_id=_2736D.

It is an out-of-plane failure caused by an in-plane load

…

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D. It is an out-of-plane failure caused by an in-plane load Correct Answers:

B. It can happen suddenly D. It is an out-of-plane failure caused by an in-plane load E. It can happen before the steel yields

Question 3

0 out of 4 points

Choose all correct answers. Which of the following terms are used in determining the deflection of a beam? Selected Answers:

A. Yield stress D. Young's modulus

Correct Answers:

B. Span of the beam D. Young's modulus E. Second moment of area,

Question 4

Ix

3.2 out of 4 points

Choose all correct answers. Which of the following are regions on a typical stress-strain curve for structural steel? Selected Answers:

A. Necking B. Plastic range C. Strain hardening D. Elastic region

Correct Answers:

A. Necking B. Plastic range C. Strain hardening D. Elastic region E. Fracture point

Question 5

4 out of 4 points

Choose all correct answers. Which of the following terms are used in determining the tensile capacity of a member? B. Gross cross-sectional area D. Yield stress Correct Answers:

B. Gross cross-sectional area D. Yield stress

Question 6

4 out of 4 points

Choose all correct answers. Choose all correct answers. https://vuws.westernsydney.edu.au/webapps/assessment/review/review.jsp?attempt_id=_12643715_1&course_id=_22345_1&content_id=_2736…

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Which of the following are common structural steel sections? B. Equal angles C. Welded beams Correct Answers:

B. Equal angles C. Welded beams

Question 7

2 out of 2 points

Which of the following describes a restraint that prevents lateral displacement of the critical flange and prevents twisting of the cross-section? Selected Answer:

B. Full restraint

Correct Answer:

B. Full restraint

Question 8

2 out of 2 points

What is the effective length of a continuous beam with a 12 m span and lateral restraint placed at the midspan? Selected Answer:

A. 6 m

Correct Answer:

A. 6 m

Question 9

2 out of 2 points

A beam which is subject to lateral buckling prior to yielding is considered: Selected Answer:

D. Slender

Correct Answer:

D. Slender

Question 10

0 out of 4 points

What is the section moment capacity of a 610UB101 grade 300PLUS including capacity reduction factor? Hint: Use the flange yield stress value given in the table Selected Answer:

G. 870 kNm

Correct Answer:

F. 783 kNm

Question 11

0 out of 4 points

Given the following data, what is the nominal section capacity of the tensile member including capacity reduction factor? Ag = 1300 mm2 fy = 300 MPa Ntf = 0.85ktAnfu = 400 kN https://vuws.westernsydney.edu.au/webapps/assessment/review/review.jsp?attempt_id=_12643715_1&course_id=_22345_1&content_id=_2736…

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Note: N ty = A g fy Selected Answer:

B. 390 kN

Correct Answer:

C. 350 kN

Question 12

2 out of 2 points

In the context of tension members, what does the term "Ag" refer to? Selected Answer:

A. The gross area of the member

Correct Answer:

A. The gross area of the member

Question 13

2 out of 2 points

If the tensile strength of a member is 100 kN, what load can it carry? Selected Answer:

A. 10 tonnes

Correct Answer:

A. 10 tonnes

Question 14

2 out of 2 points

Which of the following formulas is used to determine the tensile capacity of a member? Selected Answer:

B. N t = A g fy

Correct Answer:

B. N t = A g fy

Question 15

0 out of 4 points

What is the member moment capacity of 6 m long unbraced 250UB31.4 grade 300PLUS including capacity reduction factor? The member is bent around its major axis Selected Answer:

A. 47 kNm

Correct Answer:

C. 37 kNm

Question 16

2 out of 2 points

The stress in a column section may be idealised by the formula:

The stress in a column section may be idealised by the formula: Selected Answer:

A. σ = P / A

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Correct Answer:

A. σ = P / A

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2 out of 2 points

Buckling of a centrally-loaded column will most likely occur about which axis ? Selected Answer:

A. Minor axis

Correct Answer:

A. Minor axis

2 out of 2 points

Which parameter has no direct influence compressive member? Selected Answer:

A. Yield stress

Correct Answer:

A. Yield stress

of the critical buckling load

of a

2 out of 2 points

On this generalised stress-strain curve for structural steel, click on the Selected Answer:

strain hardening region

294 , 76

Correct Answer: Top-Left Coordinates Instructor selection and student response

(226 , 65) Bottom-Right Coordinates

(423 , 177)

Question 17

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Question 18

Question 19

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0 out of 2 points

Where would you be most likely to see local bucking of a compressive flange on the image? Click inside the correct square Selected Answer:

309, 255

Correct Answer: Top-Left Coordinates (281, 324) Bottom-Right Coordinates Instructor selection and student response

(353, 397)

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Question 20

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0 out of 2 points

Where would you be most likely to see

tensile yielding

on the image?

Click inside the correct square Selected Answer:

302 , 339

Correct Answer: Top-Left Coordinates Instructor selection and student response

(290 , 216) Bottom-Right Coordinates

(364 , 294)

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Question 21

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2 out of 2 points

What is the yield stress of a web in a 200UB29.8 grade 300PLUS Selected Answer:

C. 320 MPa

Correct Answer:

C. 320 MPa

steel?

2 out of 2 points

What is the plastic section modulus

of a 460UB74.6 about its major axis?

Selected Answer:

3 3 A. 1660 x 10 mm

Correct Answer:

3 3 A. 1660 x 10 mm

2 out of 2 points

Which of the following statements is true? Selected Answer:

Correct Answer:

B.

Standardization in steel construction is one of the major competitive edges comparing with other construction systems B.

Standardization in steel construction is one of the major competitive edges comparing with other construction systems

2 out of 2 points

In cold formed steel sections, Selected Answer:

A.

Strength of the material is improved but ductility is reduced because of the work hardening process

Question 22

Question 23

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Question 24

Question 25 Correct Answer:

A.

Strength of the material is improved but ductility is reduced because of the work hardening process

Question 26

2 out of 2 points

What is the elastic section modulus of a 460UB74.6 about its major axis? Selected Answer:

3 3 B. 1460 x 10 mm

Correct Answer:

3 3 B. 1460 x 10 mm

Question 27

2 out of 2 points

What does the 74.6 refer to in a 460UB74.6? Selected Answer:

A. Unit weight

Correct Answer:

A. Unit weight

Question 28

2 out of 2 points

High temperature has severe adverse effect on the integrity of steel. At about 800 degree C, the strength of steel is only about: Selected Answer:

A. 10% of the original value under the ambient temperature

Correct Answer:

A. 10% of the original value under the ambient temperature

Question 29

2 out of 2 points

What is the second moment of area (moment of inertia) of a 460UB74.6 about its major axis?

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Review Test Submission: 2017 Mid-semester quiz – 200470 ...

Selected Answer:

6 4 C. 335 x 10 mm

Correct Answer:

6 4 C. 335 x 10 mm

Question 30

2 out of 2 points

What is the deflection limit given by Australian standard AS/NZS 1170 for a beam supporting masonry ? L is the span of the beam. Selected Answer:

A. L/1000

Correct Answer:

A. L/1000

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Question 31

2 out of 2 points

What is the minimum design wind speed for serviceability limit state given in AS 4055? Selected Answer:

26 m/s

Correct Answer:

26 m/s

Question 32

2 out of 2 points

Which of the following is the Australian standard governing the design, fabrication and construction of cold-formed steel structures? Selected Answer:

B. AS/NZS 4600

Correct Answer:

B. AS/NZS 4600

Question 33

2 out of 2 points

What is the minimum design wind speed for ultimate limit state given in AS 4055? Selected Answer:

A. 34 m/s

Correct Answer:

A. 34 m/s

Question 34

2 out of 2 points

According to AS/NZS 4055, what is the terrain category for a very exposed, open terrain with no obstructions? Selected Answer:

C. TC1

Correct Answer:

C. TC1

Question 35

2 out of 2 points

Which of the following is the Australian standard governing structural design actions? Selected Answer:

C. AS/NZS 1170

Correct Answer:

C. AS/NZS 1170

Question 36

2 out of 2 points

Which is not an example of a dead load? Selected Answer: Correct Answer:

D. Tables D. Tables

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Correct Answer:

D. Tables

Question 37

2 out of 2 points

In Australia, the lateral load on a building is predominantly due to: Selected Answer:

D. Wind

Correct Answer:

D. Wind

Question 38

2 out of 2 points

What is the approximate unit weight of plain concrete Selected Answer:

3 B. 24 kN/m

Correct Answer:

3 B. 24 kN/m

?

Question 39

2 out of 2 points

Which of the following contributes the most frame roof? Selected Answer:

D. Wind actions

Correct Answer:

D. Wind actions

to the design actions

Question 40

of a typical steel

0 out of 4 points

What is the dead load acting on a concrete slab?

530UB92 beam due to a 200 mm thick reinforced

The beam is 7m long and spaced at 6m centres 3 Unit weight of concrete is 25 kN/m Assume no secondary beams Consider the weight of the beam and the slab

Selected Answer:

E. 27 kN/m

Correct Answer:

G. 31 kN/m

Wednesday, 20 September 2017 16:34:48 o'clock AEST

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If the tensile strength of a member is 100 kN, what load can it carry? Selected Answer:

C. 10 tonnes

Correct Answer:

C. 10 tonnes

Question 2

0 out of 2 points

Given the following data and your knowledge of tension members, what is the likely failure mode? Agfy = 333 kN 0.85 ktA nfu = 365 kN

Question 3

Selected Answer:

A. Member buckling

Correct Answer:

B. Member yielding and fracture

2 out of 2 points

Which of the following typical portal-frame members is predominantly used for tension?

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Selected Answer:

C. Wall bracing

Correct Answer:

C. Wall bracing

Question 4

2 out of 2 points

Which of the following statements is true? Selected Answer:

Correct Answer:

D.

Standardization in steel construction is one of the major competitive edges comparing with other construction systems D.

Standardization in steel construction is one of the major competitive edges comparing with other construction systems

Question 5

2 out of 2 points

Choose the most correct statement. A good structural material should have: Selected Answer:

A. A good combination of strength, stiffness and ductility

Correct Answer:

A. A good combination of strength, stiffness and ductility

Question 6

2 out of 2 points

In cold formed sections, the material strength in the formed section is higher than the material strength of the plate from which the section is produced. This is a result of:

Selected Answer:

B. Strain hardening

Correct Answer:

B. Strain hardening

Question 7

2 out of 2 points

What is the yield stress of a flange in a 200UB29.8 grade 300PLUS steel? Selected Answer:

D. 320 MPa

Correct Answer:

D. 320 MPa

Question 8

2 out of 2 points

What does the 74.6 refer to in a 460UB74.6? Selected Answer:

B. Unit weight

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B. Unit weight

Correct Answer:

Question 9

0 out of 2 points

What is the elastic section modulus of a 460UB74.6 about its major axis? Selected Answer:

3 3 C. 1660 x 10 mm

Correct Answer:

3 3 B. 1460 x 10 mm

Question 10

2 out of 2 points

What is the second moment of area (moment of inertia) of a 460UB74.6 about its major axis? Selected Answer:

6 4 C. 335 x 10 mm

Correct Answer:

6 4 C. 335 x 10 mm

Question 11

2 out of 2 points

In cold formed steel sections, Selected Answer:

Correct Answer:

A.

Strength of the material is improved but ductility is reduced because of the work hardening process A.

Strength of the material is improved but ductility is reduced because of the work hardening process

Question 12

2 out of 2 points

At the midspan of a continuous beam, the bottom flange would be subject to: Selected An...