Q.1

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

  • crippling load
  • buckling load
  • critical load
  • all the above.
Q.2

Perforated cover plates are particularly suitable for built up sections consisting of

  • channels placed back to back
  • channels placed toe to toe
  • four angle box section
  • all the above.
Q.3

The main advantage of a steel member, is :

  • its high strength
  • its gas and water tightness
  • its long service life
  • all the above.
Q.4

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

  • overall depth
  • clear depth
  • effective depth
  • none of these.
Q.5

IS :-recommends that in a splice plate the number of rivets carrying calculated shear stress through a packing greater than 6 mm thick, is to be increased by 2.for every

  • 1.00 mm thickness of packing
  • 1.50 mm thickness of packing
  • 2.0 mm thickness of packing
  • 2.50 mm thickness of packing
  • 3.0 mm thickness of packing.
Q.6

Pick up the correct statement from the following:

  • Loaded columns are supported on column bases
  • Column bases transmit the column load to the concrete foundation
  • Column load is spread over a large area on concrete
  • In column bases, intensity of pressure on concrete block is assumed to be uniform
  • All the above.
Q.7

According to the Unwin's formula, if t is thickness of the plate in cm, the nominal diameter of the rivet, is

  • d = 1.91 t
  • d = 1.91 t2
  • d = 1.91 t
  • d = 1.91 t
  • d = 2.3 t
Q.8

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

  • overall depth
  • clear depth
  • effective depth
  • none of these.
Q.9

Pick up the correct statement from the following:

  • Tacking rivets are used if the minimum distance between centres of two adjacent rivets exceeds 12 t or 200 mm, whichever is less
  • Tacking rivets are not considered to calculate stress
  • Tacking rivets are provided throughout the length of a compression member composed of two components back to back
  • All the above.
Q.10

If the area of cross-section of a single angle discontinuous strut iscm2 and allowable working stress corresponding to its slenderness ratio iskg/cm2, the safe load carrying capacity of the member, is

  • 10 tonnes
  • 12 tonnes
  • 15 tonnes
  • 18 tonnes
  • 20 tonnes
Q.11

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

  • overall depth
  • clear depth
  • effective depth
  • none of these.
Q.12

The main assumption of the method of simple design of steel frame work, is :

  • beams are simply supported
  • all connections of beams, girders and trusses are virtually flexible
  • members in compression are subjected to forces applied at appropriate eccentricities
  • all the above.
Q.13

If M is the moment due to a couple in a bearing plate whose width is b and allowable bending stress is P, the thickness (t) of the bending plate of the column splice, is

Q.14

If the area of cross-section of a single angle discontinuous strut iscm2 and allowable working stress corresponding to its slenderness ratio iskg/cm2, the safe load carrying capacity of the member, is

  • 10 tonnes
  • 12 tonnes
  • 15 tonnes
  • 18 tonnes
  • 20 tonnes
Q.15

In double lacing, the thickness t of flat lacing is

  • t < 1/40 th length between inner end rivets
  • t < 1/50 th length between inner end rivets
  • t < 1/60 th length between inner end rivets
  • t < 1/70 th length between inner end rivets
  • none of these.
Q.16

Design of a riveted joint, is based on the assumption:

  • Load is uniformly distributed among all the rivets
  • Shear stress on a rivet is uniformly distributed over its gross area
  • Bearing stress is uniform between the contact surfaces of the plate and the rivet
  • Bearing stress in the rivet is neglected
  • All the above.
Q.17

The main assumption of the method of simple design of steel frame work, is :

  • beams are simply supported
  • all connections of beams, girders and trusses are virtually flexible
  • members in compression are subjected to forces applied at appropriate eccentricities
  • all the above.
Q.18

The least permissible clear dimension of the web of thickness t in the panel of a plate girder, is restricted to

  • 150 t
  • 160 t
  • 170 t
  • 180 t
  • 200 t
Q.19

The strength of ISA=xmm used as a tie member with its longer leg connected at the ends bymm diameter rivets, is

  • 26,000 kg
  • 26,025 kg
  • 26,050 kg
  • 26,075 kg
  • 27,000 kg
Q.20

When the ratio of the moment M to axial load P is greater than, the resultant of the compressive bearing pressure which acts at a distance Y from one side, is given by

Q.21

If P is the allowable bending stress in a slab, whose greater and lesser projections from the column faces, are A and B, the thickness (t) of the slab base, is (where w is the intensity of earth pressure.)

Q.22

When the depth of a plate girder is at least n times the depth of vertical leg of the flange angles, the girder is known as deep plate girder, if n is

  • 2
  • 4
  • 6
  • 8
  • 10
Q.23

In a grillage footing, the maximum shear force occurs at the

  • edge of grillage beam
  • edge of base plate
  • centre of grillage beam
  • centre of base plate.
Q.24

If the thickness of a structural member is small as compared to its length and width, it is classified as

  • one dimensional
  • two dimensional
  • three dimensional
  • none of these.
Q.25

In factory buildings, the horizontal beams spanning between the wall columns supporting a wall covering, are called

  • stringers
  • trimmers
  • girts
  • lintels.
Q.26

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

  • L = span
  • L = 0.85 span
  • L = 0.75 span
  • L = 0.7 span
  • L = 1.25 span
Q.27

Diameter of a rivet hole is made larger than the diameter of the rivet by

  • 1.0 mm for rivet diameter upto 12 mm
  • 1.5 mm for rivet diameter exceeding 25 mm
  • 2.0 mm for rivet diameter over 25 mm
  • none of these.
Q.28

Cold driven rivets range from

  • 6 to 10 mm in diameter
  • 10 to 16 mm in diameter
  • 12 to 22 mm in diameter
  • 22 to 32 mm in diameter
  • none of these.
Q.29

Modified moment of inertia of sections with a single web, is equal to moment of inertia of the section about Y-Y axis at the point of maximum bending moment and is multiplied by the ratio of

  • area of compression flange at the minimum bending moment to the corresponding area at the point of maximum bending moment
  • area of tension flange at the minimum bending moment of the corresponding area at the point of maximum bending moment
  • total area of flanges at the maximum bending moment to the corresponding area at the point of maximum bending moment
  • none of these.
Q.30

A beam may be designed as a cased beam if

  • section is of double open channel form with the webs not less than 40 mm apart
  • overall depth and width of the steel section do not exceed 750 and 450 mm respectively.
  • beam is solidly encased in concrete with 10 mm aggregate having 28 days strength 160 kg/cm2
  • width of the solid casing is kept at least 100 mm more than the width of the steel flange and having a concrete cover of 50 mm
  • all the above.
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