DESIGN OF STEEL STRUCTURE QUIZ

For a standard 45° fillet, the ratio of size of fillet to throat thickness is

1 : V2

2: 1

1:1

V2 : 1

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Study the following statements. i) Top lateral bracing prevents the sidesway buckling of the chord. ii) Sway bracing keeps the rectangular shape of the bridge cross-section. iii) Sway bracing transfers the load from top of end posts to bearings. The correct answer is

both (i) and (iii)

both (i) and (ii)

only (i)

all (i), (ii) and (iii)

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If the 20 mm rivets are used in lacing bars, then the minimum width of lacing bar should be

40mm

100mm

80mm

60mm

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Battening is preferable when the<br/>i) column carries axial load only<br/>ii) space between the two main components is not very large<br/>iii) column is eccentrically loaded<br/>The correct answer is

(ii) and (iii)

only (i)

(i) and (ii)

only (iii)

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The maximum slenderness ratio of a compression member carrying both dead and superimposed load is

190

180

200

150

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According to IS:800, in the Merchant Rankine formula the value of imperfection index (n) is

1.4

2

1

1.8

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The mechanism method and the statical method give

lower and upper bounds respectively on the strength of structure

lower bound on the strength of structure

upper bound on the strength of structure

upper and lower bounds respectively on the strength of structure

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To minimize the total cost of a roof truss, the ratio of the cost of truss to the cost of purlins shall be

4

3

5

2

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The minimum thickness of a steel plate, which is directly exposed to weather and is not accessible for cleaning and repainting, should be:

8 mm

10 mm

4.5 mm

6 mm

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The actual thickness of butt weld as compared to the thickness of plate is usually

more

equal

less

None of these

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