DESIGN OF STEEL STRUCTURE QUIZ

Bending compressive and tensile stresses respectively are calculated based on

net area in both cases

gross area in both cases

net area and gross area

gross area and net area

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YOUR ANSWER : ?

Efficiency of a riveted joint, having the minimum pitch as per IS : 800, is

40%

50%

60%

30%

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Minimum pitch provided in riveted steel tanks is (where d is diameter of rivets)

1.5 d

2.5 d

3.0 d

2.0 d

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Bearing stiffeners are provided ati) the supportsii) the mid spaniii) the point of application of concentrated loads The correct answer is

both (i) and (ii)

both (i) and (iii)

(i), (ii) and (iii)

only (i)

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For the buildings having a low permeability, the internal wind pressure acting normal to the wall and roof surfaces is taken as (where p is basic wind pressure)

± 0.5 p

±0.7p

zero

±0.2p

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Hudson’s formula gives the dead weight of a truss bridge as a function of

top chord area

bottom chord area

effective span of bridge

heaviest axle load of engine

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The sway bracing is designed to transfer

10% of the top panel wind load to bottom bracing

50% of the top panel wind load to bottom bracing

25% of the top panel wind load to bottom bracing

2Vi % of the top panel wind load to bottom bracing

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Minimum spacing of vertical stiffeners is limited to (where d is the distance between flange angles)

d/3

d/4

d/2

2d/3

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compression force in two end posts The pin of a rocker bearing in a bridge is designed for

bearing and bending

bearing, shear and bending

bending and shear

bearing and shear

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

1.8

1.4

1

2

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