Steel Structures MCQs Mock test Set-1

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1.

For a rivet of 20 mm diameter, the diameter of hole will be taken as

21 mm

19 mm

21.5 mm

18.5 mm

2.

Rivets are generally specified by

Diameter of the shank

Diameter of the hole

Length of the shank

Width of head

3.

The pin of rocker bearing is designated for

Shear

Bending

Bearing

All of these

4.

The dead loads

(d) change their position

(b) do not vary in magnitude

(c) Both (a) and (b)

(a) do not change their position

5.

For construction purpose, which of the following grades of steel bar used?

b) Fe 500

Both a) and b)

None of these

a) Fe 415

6.

A channel section consists of

One web and two flanges

Two flanges

Two webs

Two webs and two flanges

7.

An angle section can be used as a purlin when slope of the roof truss is

Greater than 30°

Less than 30°

Between 40° and 70°

Less than 45°

8.

Rolled steel flats designated by 50 ISF 8 means that the flat is of

50 mm thick and 8 mm width

50 mm length and 8 mm thick

50 mm thick and 8 mm length

50 mm width and 8 mm thick

9.

A rolled I-section provides

Greater lateral stability

Large amount of inertia about X-axis with less cross-sectional area

All of these

Large moment of resistance as compared to the other sections

10.

The permissible stresses in rivets under wind load condition as per IS: 800 can be exceeded by about

50%

15%

33%

25%

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11.

The single angle sections are used for

All of these

Small trusses and bracing

Trusses having gusset plates in one plane

Single plane trusses

12.

The main advantage of a steel member is that it

has high strength

has long service life

is gas and water tight

all of these

13.

The heaviest I-section for same depth is

ISMB

ISWB

ISHB

ISLB

14.

The type of rolled steel section mainly used as structural member is

Rolled steel T-section

All of these

Rolled steel channel section

Rolled steel I-sections

15.

Which of the following IS code defines the high tensile steel?

IS 1977

IS 961

IS 2062

IS 226

16.

Diameter of a bolt hole is usually taken as

Nominal diameter + 1.5 mm

Gross diameter of bolt

Nominal diameter of bolt

Nominal diameter + 2.0 mm

17.

The built-up sections are used because they provide

Large cross-sectional area

Special shape and depth

All of these

Sufficient large radius of gyration

18.

High yield deformed bars have a

Percentage elongation less than that of mild steel

Definite yield value

Percentage elongation more than that of mild steel

Chemical composition different from mild steel

19.

The common section used in lacing is

Rolled angle

Rolled channel

Rolled steel flat

All of these

20.

The most efficient section for a given beam for a given cross-sectional area is

I-section

Channel

Hollow circular

Circular

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21.

The perforated cover plates are particularly suitable for a built up box section consisting of

Two angle sections

Four channel sections

Four angle sections

Two channel sections

22.

Bolts are most suitable to carry

Axial tension

Bending

Shear and bending

Shear

23.

As per IS code, the maximum pitch of rivets in compression flange (thickness 't') of a built up beam is

Lesser of 200 mm and 12t

Lesser of 200 mm and 16t

Lesser of 250 mm and 12t

Lesser of 250 mm and 16t

24.

Rolled steel T-sections are used

d) none of these

c) both a) and b)

a) To transmit bracket loads to the columns

b) with flat strips to connect plates in the steel rectangular tanks

25.

Bearing Stiffness are provided at the

a) Support

b) Point of application of concentrated load

None of these

Both a) and b)

26.

The live loads

(b) vary in magnitude

(d) do not vary in magnitude

(c) both (a) and (b)

(a) change their position

27.

A steel plate is 30 cm wide and 10 mm thick. A rivet of nominal diameter of 18 mm is driven. The net sectional area of plate is

28.05 m²

32.42 m²

18.00 m²

28.20 m²

28.

The weight of 1 m² of mild steel is approximately

790 kg

7900 kg

790000 kg

79000 kg

29.

In a tension member, when one or more than one rivet hole is off the line, then the failure of plate depends upon

pitch of rivets

gauge of rivets

all of these

diameter of rivet hole

30.

As per Indian standards, rolled steel I-sections are classified into

Six series

Four series

Five series

Seven series

Steel Structures MCQs Mock test Set-1

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