Design of Steel Structures objective question and answer

 Design of Steel Structures objective question and answer

Question No. 306

For the steel member exposed to weather and accessible for repainting, the thickness of steel 

should not be less than (accepting 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 

Question No. 307

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

Answer: Option D 

Question No. 308

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 

(A) Pitch of rivet 

(B) Gauge distance of rivet 

(C) Staggered pitch 

(D) All the above 

Answer: Option C 

Question No. 309

The effective length 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 

(A) L = span 

(B) L = 0.85 span 

(C) L = 0.75 span 

(D) L = 0.7 span 

Answer: Option B 

Question No. 310

The permissible bearing stress in steel, is 

(A) 1500 kg/cm2

(B) 1890 kg/cm2

(C) 2025 kg/cm2

(D) 2340 kg/cm2

Answer: Option B 

Question No. 311

Strengths of a rivet in single shearing, in bearing and in tearing are 3425 kg, 4575 kg and 5025 kg 

respectively. If the load in the member is 35 tonnes, the number of rivets required, is 

(A) 10 

(B) 11

(C) 12 

(D) 13 

Answer: Option D 

Question No. 312

The bending moment for filler joists at the middle of an intermediate span, is 

(A) WL²/10 

(B) - WL²/10 

(C) - WL²/12 

(D) WL²/12 

Answer: Option D 

Question No. 313

A simply supported beam carrying a central load, will be safe in deflection if the ratio of its span to 

depth, is 

(A) < 19 

(B) < 24 

(C) > 19 

(D) > 24 

Answer: Option B 

Question No. 314

When a load is transferred through one surface to another surface in contact, the stress is known 

as 

(A) Tensile stress 

(B) Compressive stress 

(C) Shearing stress 

(D) None of these 

Answer: Option D 

Question No. 315

If p and d are pitch and gross diameter of rivets, the efficiency ( ) of the riveted joint, is given by 

(A) = p/p - d

(B) = p/p + d

(C) = p - d/p

(D) = p + d/p

Answer: Option C 

Question No. 316

The slenderness ratio of a column is zero when its length 

(A) Is zero 

(B) Is equal to its radius of gyration 

(C) Is supported on all sides throughout its length 

(D) Is between the points of zero moments 

Answer: Option D

Question No. 317

A 20 mm dia steel bar which is subjected to an axial tension of 2300 kg/cm2

 produces a strain of 

0.004 cm. If Young's modulus of steel is 2.1 × 106

 kg/cm2

, the bar is 

(A) In the elastic range 

(B) In the plastic range 

(C) At yield point 

(D) None of these 

Answer: Option A 

Question No. 318

The maximum axial load which is just sufficient to keep a column in a small deflected shape, is 

called 

(A) Crippling load 

(B) Buckling load 

(C) Critical load 

(D) All the above 

Answer: Option D 

Question No. 319

Spans of continuous fillers are considered approximately equal if the longest span does not exceed 

the shortest span by more than 

(A) 5 % 

(B) 10 % 

(C) 15 % 

(D) 20 % 

Answer: Option C 

Question No. 320

The ratio of the span L of the filler joists to the depth d from the underside of the joist to the top 

of the structural concrete, should not exceed 

(A) 60 

(B) 45 

(C) 35 

(D) 25 

Answer: Option C 

Question No. 321

With a percentage increase of carbon in steel, decreases its 

(A) Strength 

(B) Hardness 

(C) Brittleness 

(D) Ductility 

Answer: Option D

Question No. 322

The allowable stress in axial tension is generally kept less if thickness of the member is more than 

(A) 10 mm 

(B) 12 mm 

(C) 15 mm 

(D) 20 mm 

Answer: Option D 

Question No. 323

The maximum permissible slenderness ratio of compression member carrying dead and 

superimposed load, is 

(A) 180 

(B) 200 

(C) 250 

(D) 350 

Answer: Option A 

Question No. 324

Tacking rivets in compression plates not exposed to the weather, have a pitch not exceeding 300 

mm or 

(A) 16 times the thickness of outside plate 

(B) 24 times the thickness of outside plate 

(C) 32 times the thickness of outside plate 

(D) 36 times the thickness of outside plate 

Answer: Option C 

Question No. 325

A single angle in tension is connected by one leg only. If the areas of connecting and outstanding 

legs are respectively a and b, net effective area of the angle, is 

(A) a - [b/{1 + 0.35 (b/a)}] 

(B) a + [b/{1 + 0.35 (b/a)}] 

(C) a - [b/{1 + 0.2 (b/a)}] 

(D) a + [b/{1 + 0.2 (b/a)}] 

Answer: Option B 

Question No. 326

If L is the overall length of a combined footing having A as its area, d being the distance between 

the centre of gravity of the base and centre of the base, the larger width b is 

(A) (A/L) + (3Ad/L²) 

(B) (A/L) + (6Ad/L²) 

(C) (A/L) - (6Ad/L²) 

(D) (A/L) - (3Ad/L²) 

Answer: Option B

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Design of Steel Structures objective question and answer part 1 

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