# Steel Structure Design MCQ Questions & Answers

Steel Structure Design MCQs : This section focuses on the "Steel Structure Design". These Multiple Choice Questions (MCQs) should be practiced to improve the Steel Structure Design skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.

Question 1

If the unsupported length of a stanchion is 4 metres and least radius of gyration of its cross-section is 5, the slenderness ratio of the stanchion, is

A. 60
B. 70
C. 80
D. 90

Question 2

The ratio of shearing stress to shearing strain within elastic limit, is known as

A. modulus of elasticity
B. shear modulus of elasticity
C. bulk modulus of elasticity
D. tangent modulus of elasticity

Question 3

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

Question 4

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

Question 5

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)

Question 6

The effective length of a compression member of length L held in position and restrained in direction at one end and effectively restrained in direction but not held in position at the other end, is

A. L
B. 0.67 L
C. 0.85 L
D. 1.5 L

Question 7

A. varies in magnitude
B. varies in position
C. is expressed as uniformly distributed load
D. All the above.

Question 8

The average shear stress for rolled steel beam section, is

A. 845 kg/cm2
B. 945 kg/cm2
C. 1025 kg/cm2
D. 1500 kg/cm2

Question 9

The allowable stress in axial tension for rolled I-sections and channels, is taken as

A. 1420 kg/cm2
B. 1500 kg/cm2
C. 2125 kg/cm2
D. 1810 kg/cm2

Question 10

In plastic analysis, the shape factor for circular sections, is

A. 1.5
B. 1.6
C. 1.697
D. none of these.

Question 11

If the pitch is 6 cm and rivet value is 4 tonnes, the number of rivets required for a riveted connection carrying an eccentric load of 15 tonnes at a distance of 30 cm from the centre line, is

A. 6
B. 8
C. 10
D. 12

Question 12

Pick up the correct statement from the following:

A. When the gauge distance is larger than the pitch, the failure of the section may occur in a zig-zag line
B. When the gauge distance is smaller than the pitch, the failure of the section may occur in a straight right angle section through the centre of rivet holes
C. When the gauge distance and pitch are both equal, the failure to the section becomes more likely as the diameter of the holes increases
D. All the above.

Question 13

For a rectangular section, the ratio of the maximum and average shear stresses, is

A. 1.5
B. 2
C. 2.5
D. 3

Question 14

Net sectional area of a tension member, is equal to its gross section area

A. plus the area of the rivet holes
B. divided by the area of rivet holes
C. multiplied by the area of the rivet holes
D. minus the area of the rivet holes

Question 15

When a tension member is made of four angles with a plate as a web, the allowance for holes is made as

A. two holes for each angle and one hole for the web
B. one hole for each angle and one hole for the web
C. one hole for each angle and two holes for the web
D. two holes for each angle and two holes for the web

Question 16

If d is the distance between the flange angles, the vertical stiffeners in plate girders are spaced not greater than

A. d
B. 1.25 d
C. 1.5 d
D. 1.75 d

Question 17

The maximum permissible slenderness ratio of a member carrying loads resulting from wind, is

A. 180
B. 200
C. 250
D. 300

Question 18

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.

Question 19

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.

Question 20

Pick up the correct statement from the following:

A. Dead load includes self-weight of the structure and super-imposed loads permanently attached to the structure
B. Dead loads change their positions and vary in magnitude
C. Dead loads are known in the beginning of the design
D. None of these.

Question 21

For determination of allowable stress in axial compression, Indian Standard Institution has adopted

A. Euler's formula
B. Rankine formula
C. Engesser formula
D. Secant formula

Question 22

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

A. overall depth
B. clear depth
C. effective depth
D. none of these.

Question 23

For a column of height L fixed in position and direction both at its top and bottom, its effective length, is

A. L
B. L
C. (1/2)*L
D. 2L

Question 24

Pick up the incorrect statement from the following:

A. The nominal diameter of a rivet is its diameter before driving
B. The gross diameter of a rivet is the diameter of rivet hole
C. The gross area of a rivet is the cross-sectional area of the rivet hole
D. The diameter of a rivet hole is equal to the nominal diameter of the rivet plus 1.5 mm

Question 25

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

Question 26

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

Question 27

A fillet weld may be termed as

A. mitre weld
B. concave weld
C. convex weld
D. all the above.

Question 28

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°

Question 29

Web crippling generally occurs at the point where

A. bending moment is maximum
B. shearing force is minimum
C. concentrated loads act
D. deflection is maximum

Question 30

A beam is defined as a structural member subjected to

D. none of these.

Question 31

The ratio of longitudinal stress to strain within eiastic limit, is known as

A. modulus of elasticity
B. shear modulus of elasticity
C. bulk modulus of elasticity
D. tangent modulus of elasticity

Question 32

If the depth of two column sections are equal, then the column splice is provided

A. with filler plates
B. with bearing plates
C. with filler and hearing plates
D. none of these.

Question 33

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

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

Question 34

The most economical section for a column, is

A. rectangular
B. solid round
C. flat strip
D. tubular section

Question 35

The minimum edge distance of a rivet line connecting two or more plates, is kept equal to 37 mm plus (where t is the thickness in mm of the thinner outside plate).

A. 2 t
B. 4 t
C. 6 t
D. 8 t