Posted On:February 2, 2019, Posted By: Latest Interview Questions,
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Dear Readers, Welcome to __ Design of Steel Structures Objective Questions__ have been designed specially to get you acquainted with the nature of questions you may encounter during your Job interview for the subject of

a) ISMB

b) ISLB

c) ISHB

d) ISWB

Ans: c

a) net area and gross area

b) gross area and net area

c) net area in both cases

d) gross area in both cases

Ans: b

a) 120 mm

b) 160 mm

c) 200 mm

d) 300 mm

Ans: b

a) fully by direct bearing

b) fully through fastenings

c) 50% by direct bearing and 50% through fastenings

d) 75% by direct bearing and 25% through fastenings

Ans: c

a) only shear stresses

b) only tensile stresses

c) both (a) and (b)

d) none of the above

Ans: a

a) is at the maximum distance from CG of the rivet group

b) is at the minimum distance from CG of the rivet group

c) gives the maximum angle between the two forces Fa and Fm

d) gives the minimum angle between the two forces Fa and Fm

where, Fa is the load shared by each rivet due to axial load and Fm is the shearing load due to moment in any rivet.

Ans: d

a) lap joint

b) butt joint with single cover plate

c) butt joint with double cover plates

d) none of the above

Ans: c

a) 1.0 mm

b) 1.5 mm

c) 2.0 mm

d) 2.5 mm

Ans: b

a) stronger

b) weaker

c) equally strong

d) any of the above

Ans: a

a) 16 mm

b) 20 mm

c) 24 mm

d) 27 mm

Ans: c

a) tension failure of the plate

b) shear failure of the rivet

c) shear failure of the plate

d) crushing failure of the rivet

Ans: c

a) 1.5 d

b) 2.0 d

c) 2.5 d

d) 3.0 d

where d is gross diameter of rivet

Ans: c

a) 40%

b) 50%

c) 60%

d) 70%

Ans: c

a) Material cost of a rivet is higher than that of a bolt.

b) Tensile strength of a bolt is lesser than that of a rivet.

c) Bolts are used as a temporary fasten¬ings whereas rivets are used as per¬manent fastenings.

d) Riveting is less noisy than bolting.

Ans: c

a) shear

b) bending

c) axial tension

d) shear and bending

Ans: c

a) gross diameter of bolt

b) nominal diameter + 1.5 mm

c) nominal diameter + 2.0 mm

d) nominal diameter of bolt

Ans: b

a) black bolt

b) ordinary unfinished bolt

c) turned and fitted bolt

d) high strength bolt

Ans: d

a) minimum dimension

b) average dimension

c) maximum dimension

d) none of the above

Ans: a

a) two times the weld size

b) four times the weld size

c) six times the weld size

d) weld size

Ans: b

a) 1:1

b) 1 : V2

c) V2 : 1

d) 2: 1

Ans: c

a) effective throat thickness

b) plate thickness

c) size of weld

d) penetration thickness

Ans: a

a) more

b) less

c) equal

d) none of the above

Ans: a

a) lesser of 200 mm and 12 t

b) lesser of 200 mm and 161

c) lesser of 300 mm and 32 t

d) lesser of 3 00 mm and 24 t

where t is thickness of thinnest outside plate or angle

Ans: a

a) it is uneconomical

b) it cannot carry the load safely

c) it is difficult to connect beams to the round sections

d) all of the above

Ans: c

a) zero

b) 10

c) 100

d) infinity

Ans: a

a) 0.67 L

b) 0.8 L

c) L

d) 1.5 L

Ans: b

a) 1.8 L

b) L

c) 1.1 L

d) 1.5 L

Ans: c

a) 180

b) 200

c) 250

d) 350

Ans: a

a) 150

b) 180

c) 250

d) 350

Ans: c

a) 1.0

b) 1.4

c) 1.8

d) 2.0

Ans: b

a) lacing

b) battening

c) tie plates

d) perforated cover plates

Ans: a

a) 40mm

b) 60mm

c) 80mm

d) 100mm

Ans: b

a) prohibited

b) not prohibited

c) permitted at start and end of lacing system only

d) permitted between two parts of the lacing

Ans: c

a) bending moment due to 2.5% of the column load

b) shear force due to 2.5% of the column load

c) 2.5% of the column load

d) both (a) and (b)

Ans: b

a) 10° to 30°

b) 30° to 40°

c) 40° to 70°

d) 90°

Ans: c

i) column carries axial load only

ii) space between the two main components is not very large

iii) column is eccentrically loaded The correct answer is

a) only (i)

b) only (iii)

c) (i) and (ii)

d) (ii) and (iii)

Ans: c

a) 5%

b) 10%

c) 15%

d) 20%

Ans: b

a) 3t

b) 4t

c) 6t

d) 8t

where t = thickness of the batten plate

Ans: b

a) 100

b) 120

c) 145

d) 180

Ans: c

a) minimum weight

b) minimum depth

c) maximum weight

d) minimum thickness of web

Ans: a

a) vertical intermediate stiffener

b) horizontal stiffener at neutral axis

c) bearing stiffener

d) none of the above

Ans: a

a) shear buckling of web plate

b) compression buckling of web plate

c) yielding

d) all of the above

Ans: b

a) 5 mm

b) 6 mm

c) 8 mm

d) 10mm

Ans: b

a) increasing the web thickness

b) providing suitable stiffeners

c) increasing the length of the bearing plates

d) none of the above

Ans: c

a) 121

b) 161

c) 201

d) 251

where t = thickness of thinnest flange plate

Ans: b

a) 501

b) 851

c) 200t

d) 2501

where t is thickness of web

Ans: b

a) transfer the load from the top flange to the bottom one

b) prevent buckling of web

c) decrease the effective depth of web

d) prevent excessive deflection

Ans: b

a) axial forces

b) shear and axial forces

c) shear and bending forces

d) axial and bending forces

Ans: c

** **

a) lateral loads

b) longitudinal loads and vertical loads

c) lateral, longitudinal and vertical loads

d) lateral and longitudinal loads

Ans: c

a) d/4

b) d/3

c) d/2

d) 2d/3

where d is the distance between flange angles

Ans: b

i) the supports

ii) the mid span

iii) the point of application of concentra-ted loads The correct answer is

a) only (i)

b) both (i) and (ii)

c) both (i) and (iii)

d) (i), (ii) and (iii)

Ans: c

a) horizontal shear only

b) vertical load only

c) both (a) and (b)

d) none of the above

Ans: a

a) 1.33d

b) 1.25 d

c) 1.5 d

d) 1.75d

where d is the distance between flange angles

Ans: c

a) L/3 to L/5

b) L/4to2L/5

c) L/3 to L/2

d) 2L/5 to 3L/5 where L is span

Ans: a

a) 650 mm

b) 810 mm

c) 1250 mm

d) 1680 mm

Ans: d

a) 26'/2°

b) 30°

c) 35°

d) 40°

Ans: b

a) 1

b) 2

c) 3

d) 4

Ans: b

a) axial force in rafter

b) shear force in rafter

c) deflection of rafter

d) bending moment in rafter

Ans: d

a) zero

b) ±0.2p

c) ± 0.5 p

d) ±0.7p

where p is basic wind pressure

Ans: b

a) pa V

b) paV2

c) p a (1/V)

d) paV"2

Ans: b

a) 0.65 kN/m2

b) 0.75 kN/m2

c) 1.35 kN/m2

d) 1.50 kN/m2

Ans: a

a) ± 0.2

b) ±0.5

c) ± 0.7

d) 0

Ans: c

a) 10 m

b) 20 m

c) 25 m

d) 50 m

Ans: a

a) mean probable design life of structures

b) basic wind speed

c) both (a) and (b)

d) none of the above

Ans: c

a) degree of permeability of roof

b) slope of roof

c) both (a) and (b)

d) none of the above

Ans: b

a) 10% of wall area

b) 20% of wall area

c) 30% of wall area

d) 50% of wall area

Ans: b

a) 4 zones

b) 5 zones

c) 6 zones

d) 7 zones

Ans: c

a) 3

b) 5

c) 6

d) 7

Ans: b

a) 1.5 d

b) 2.0 d

c) 2.5 d

d) 3.0 d

where d is diameter of rivets

Ans: d

a) 95.0 MPa on net area

b) 105.5 MPa on net area

c) 105.5 MPa on gross area

d) 150.0 MPa on gross area

Ans: b

a) weight of tank

b) wind pressure

c) water pressure

d) earthquake forces

Ans: c

a) angle section

b) channel section

c) box type section

d) any of the above

Ans: c

** **

a) 1000 litre

b) 1650 litre

c) 1950 litre

d) 2450 litre

Ans: c

a) horizontal shear due to wind or earthquake only

b) horizontal, shear due to wind or earthquake + 2.5% of column loads

c) column loads + 2.5% of horizontal shear due to wind or earthquake

d) column loads + full horizontal shear due to wind or earthquake

Ans: b

a) 4mm

b) 5 mm

c) 6 mm

d) 8 mm

Ans: c

a) 6t

b) 101

c) 121

d) 161

where t is thickness of thinner plate being connected

Ans: b

a) less than d

b) equal to d

c) more than d

d) any of the above

where d is the diameter of the cylindrical part

Ans: c

a) bottom chord area

b) top chord area

c) effective span of bridge

d) heaviest axle load of engine

Ans: a

a) 0

b) 0.5

c) between 0.5 and 1.0

d) 1.0

Ans: c

a) deck type

b) through type

c) half through type

d) double deck type

Ans: c

a) 1.23 m above the rail level

b) 1.50 m above the rail level

c) 1.83 m above the rail level

d) 2.13m above the rail level

Ans: c

i) lateral braces

ii) chord members

The correct answer is

a) only (i)

b) only (ii)

c) both (i) and (ii)

d) none of the above

Ans: a

a) transfer load from top of end posts to bearings

b) keep the rectangular shape of the bridge cross-section

c) stiffen the structure laterally

d) prevent the sidesway buckling of top chord

Ans: a

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

b) 10% of the top panel wind load to bottom bracing

c) 25% of the top panel wind load to bottom bracing

d) 50% of the top panel wind load to bottom bracing

Ans: d

i) Top lateral bracing prevents the sidesway buckling of the chord.

ii) Sway bracing keeps the rectangular shape of the bridge cross-section.

iii) Sway bracing transfers the load from top of end posts to bearings.

The correct answer is

a) only (i)

b) both (i) and (ii)

c) both (i) aad (iii)

d) all (i), (ii) and (iii)

Ans: b

a) sway bracing

b) portal bracing

c) top lateral bracing

d) bottom lateral bracing

Ans: b

a) bearing and shear

b) bending and shear

c) bearing and bending

d) bearing, shear and bending

Ans: d

a) 0.5 D

b) 0.68 D

c) 0.88 D

d) D

Ans: c

a) 1.18

b) 1.414

c) 1.67

d) 1.81

Ans: a

a) rectangular beams up to 300 mm depth

b) all rectangular beams

c) solid circular beams only

d) all square cross-section beams

Ans: a

a) 1/12 of strain at the initiation of strain hardening and about 1/120 of maxi-mum strain

b) 1/2 of strain at the initiation of strain hardening and about 1/12 of maxi-mum strain

c) 1/12 of strain at the initiation of strain hardening and 1/200 of maximum strain

d) 1/24 of strain at the initiation of strain hardening and about 1/200 of maximum strain

Ans: c

a) lower and upper bounds respectively on the strength of structure

b) upper and lower bounds respectively on the strength of structure

c) lower bound on the strength of struc-ture

d) upper bound on the strength of structure

Ans: b

a) linear

b) parabolic

c) constant moment for all curvatures

d) constant curvature for all moments

Ans: c

a) only on the ultimate stress of the material

b) only on the yield stress of the material

c) only on the geometry of the section

d) both on the yield stress and ultimate stress of material

Ans: c

a) equilibrium and mechanism condi¬tions

b) equilibrium and plastic moment con¬ditions

c) mechanism and plastic moment conditions

d) equilibrium condition only

Ans: b

a) equilibrium and mechanism condi¬tions

b) equilibrium and plastic moment con¬ditions

c) mechanism and plastic moment conditions

d) equilibrium condition only

Ans: a

a) always equal to factor of safety

b) always less than factor of safety

c) always greater than factor of safety

d) sometimes greater than factor of safety

Ans: c

a) is equal to 1

b) is always less than 1

c) is always greater than 1

d) can be less than 1

Ans: c

a) equal to load factor in determi-nate structures

b) more than the load factor in determinate structures

c) less than the load factor in determinate structures

d) unpredictable

Ans: b

a) equilibrium condition

b) yield condition

c) plastic moment condition

d) mechanism condition

Ans: a

a) displacement

b) load

c) slope

d) moment

Ans: a

Working Loads Load factor

(i) Dead load 1.7

(ii) Dead Load + imposed load 1.7

(iii) Dead load + load due to wind or 1.3 seismic forces

(iv) Dead load + imposed load + load 1.7

due to wind or seismic forces Of these statements

a) (i) and (ii) are correct

b) (i), (ii) and (iii) are correct

c) (ii) and (iii) are correct

d) only (i) is correct

Ans: a

a) 1.5

b) 1.7

c) 2.0

d) 2.34

Ans: d

a) 0.55 Awfy

b) 0.65 Awfy

c) 0.75 Awfy

d) 0.85 Awfy

where, Aw = effective cross-sectional area resisting shear fy = yield stress of the steel

Ans: a

a) 4.5 mm

b) 6 mm

c) 8 mm

d) 10 mm

Ans: c

a) 1.5dV/C

b) 1.5d¥/C

c) 1.5d¥/C2

d) 1.5dY/C3

where, 't' is the minimum required thick-ness of the web and 'C is the maximum permitted clear distance between vertical stiffener for thickness 't'.

Ans: c

a) 75 t2/h

b) 125 t3/h2

c) 125 t2/h

d) 175 t2/h

where, t = the web thickness in mm

h = the outstand of stiffener in mm

Ans: c

a) equal angles back to back

b) unqual legged angles with long legs back to back

c) unequal legged angles with short legs back to back

d) both (b) or (c)

Ans: b

a) are used to reduce the length of connection.

b) are unequal angles.

c) increases shear lag.

d) all the above

Ans: a

a) reduced by 25 %

b) reduced by 33.3%

c) increased by 25 %

d) increased by 33.3 %

Ans: b

a) stringer beam

b) lintel beam

c) spandrel beam

d) header beam

Ans: c

a) 500 mm

b) 600 mm

c) 1000 mm

d) 300 mm

Ans: c

a) shear in rivets

b) compression in rivets

c) tension in rivets

d) strength of rivets in bearing

Ans: c

a) decrease in h/t ratio

b) increase in h/t ratio

c) decrease in thickness

d) increase in height

where 'h' is height and t is thickness

Ans: b