Steel Structure Design - Section 1 (2)

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Steel Structure Design - Section 1

This is a designing field and there are many MCQs available to
solve which are based on this field.

9.

Column footing is provided

A.	to spread the column load over a larger area
B.	to ensure that intensity of bearing pressure between the column footing and soil does not exceed permissible bearing capacity of the soil
C.	to distribute the column load over soil through the column footing
D.	all the above.

Answer: Option D

Explanation:

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10.

The permissible stress in bending for rolled steel I-beams and channels, is

A.	1500 kg/cm2
B.	1575 kg/cm2
C.	945 kg/cm2
D.	1650 kg/cm2
E.	1875 kg/cm2

Answer: Option D

Explanation:

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11.

For the steel member exposed to weather and accessible for repainting, the thickness of steel should not be less than (excepting the webs of Indian Standard rolled steel joists and channels).

A.	4 mm
B.	6 mm
C.	8 mm
D.	10 mm

Answer: Option B

Explanation:

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12.

The thickness t of a single flat lacing should not be less than

A.	1/30 th length between inner end rivets
B.	1/40 th length between inner end rivets
C.	1/50 th length between inner end rivets
D.	1/60 th length between inner end rivets
E.	none of these.

Answer: Option B

Explanation:

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13.

The rolled steel I-sections are most commonly used as beams because these provide

A.	large moment of inertia with less cross-sectional area
B.	large moment of resistance as compared to other section
C.	greater lateral stability
D.	all the above.

Answer: Option D

Explanation:

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14.

A second horizontal stiffener is always placed at the neutral axis of the girder if the thickness of the web is less than

A.	d/250 for structural steel
B.	d/225 for high tensile steel
C.	both (c) and (b)
D.	neither (a) nor (b)

Answer: Option C

Explanation:

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15.

Secant formula for direct stress in compression, is applicable only for slenderness ratio upto

A.	120
B.	130
C.	140
D.	150
E.	160

Answer: Option C

Explanation:

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16.

The cross-section of a standard fillet is a triangle whose base angles are

A.	45° and 45°
B.	30° and 60°
C.	40° and 50°
D.	20° and 70°

Answer: Option A

Explanation:

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