Design of Steel Structures

201. The diameter of a bolt hole is taken as the nominal diameter of the bolt plus

1. 1.0 mm
2. 1.2 mm
3. 1.4 mm
4. 1.6 mm

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202. The diameter of base of conical flare of a steel stack is

1. Less than d
2. Equal to d
3. More than d
4. Any of the above
   Where 'd' is the diameter of the cylindrical part

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203. The difference between gross diameter and nominal diameter for the rivets up to 25 mm diameter is

1. 1.0 mm
2. 1.5 mm
3. 2.0 mm
4. 2.5 mm

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204. The distance between e.g. of compression and e.g. of tension flanges of a plate girder, is known as

1. Overall depth
2. Clear depth
3. Effective depth
4. None of these

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205. The distance between the outer faces of flanges of a plate girder, is known as

1. Overall depth
2. Clear depth
3. Effective depth
4. None of these

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206. The distance measured along one rivet line from the centre of a rivet to the centre of adjoining rivet on an adjacent parallel rivet line, is called

1. Pitch of rivet
2. Gauge distance of rivet
3. Staggered pitch
4. All the above

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207. The economical depth d of a web plate in which allowable bearing stress is f_b, and the maximum bending moment is M, as suggested by Rawater and Clark, is

1. d = ∛(M/f_b)
2. d = 1.5 ∛(M/f_b)
3. d = 2.5 ∛(M/f_b)
4. d = 4.5 ∛(M/f_b)

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208. The effect of racking forces is considered in the design of
(i) Lateral braces
(ii) Chord members
The correct answer is

1. Only (i)
2. Only (ii)
3. Both (i) and (ii)
4. None of the above

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209. The effective length 'L' of a simply supported beam with ends restrained against torsion, and also the ends of compression flange partially restrained against lateral bending, is given by

1. L = span
2. L = 0.85 span
3. L = 0.75 span
4. L = 0.7 span

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210. The effective length of a battened column is increased by

1. 5 %
2. 10 %
3. 15 %
4. 20 %

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