DECLARATION AND ACCESS CONTROL QUIZ

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

4.5 mm

6 mm

10 mm

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YOUR ANSWER : ?

As per IS : 875, for the purposes of specifying basic wind velocity, the country has been divided into

5 zones

3 zones

6 zones

4 zones

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In the cross-section of a weld, throat is the

average dimension

minimum dimension

None of these

maximum dimension

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According to IS Specifications, the maximum pitch of rivets in compression is (where t is thickness of thinnest outside plate or angle)

lesser of 3 00 mm and 24 t

lesser of 200 mm and 12 t

lesser of 200 mm and 161

lesser of 300 mm and 32 t

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

50%

40%

60%

30%

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

1

1.4

1.8

2

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

1.5 d

3.0 d

2.0 d

2.5 d

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The sway bracing is designed to transfer

2Vi % 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

10% of the top panel wind load to bottom bracing

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The allowable tensile stress in structural mild steel plates for steel tank is assumed as

150.0 MPa on gross area

105.5 MPa on net area

95.0 MPa on net area

105.5 MPa on gross area

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The heaviest I-section for same depth is

ISHB

ISLB

ISMB

ISWB

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