Q.1

The maximum permissible slenderness ratio of compression member carrying dead and superimposed load, is

  • 180
  • 200
  • 250
  • 300
  • 350
Q.2

Rolled steel angle sections are classified as

  • equal angles
  • unequal angles
  • bulb angles
  • all the above.
Q.3

With a percentage increase of carbon in steel, decreases its

  • strength
  • hardness
  • brittleness
  • ductility.
Q.4

Compression members composed of two channels back-to-back and separated by a small distance are connected together by riveting so that the minimum slenderness ratio of each member between the connections, does not exceed

  • 40
  • 50
  • 60
  • 70
Q.5

Effective sectional area of a compression member is :

  • gross sectional area - area of rivet hole
  • gross sectional ares + area of rivet hole
  • gross sectional ares x area of rivet hole
  • gross sectional ares + area of rivet hole.
Q.6

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.7

The beam outside a wall upto floor level above it, is known as

  • rafter
  • purlin
  • spandrel beam
  • lintel
  • none of these.
Q.8

The greatest gauge of long rivets should not exceed (where d is the diameter of the holes).

  • 2 d
  • 4 d
  • 6 d
  • 8 d
  • 10 d
Q.9

The gross section of the web of a beam is defined as

  • depth of the beam multiplied by its web thickness
  • width of the flange multiplied by its web thickness
  • sum of the flange width and depth of the beam multiplied by the web thickness
  • none of these.
Q.10

Stiffeners are used in a plate girder

  • to reduce the compressive stress
  • to reduce the shear stress
  • to take the bearing stress
  • to avoid buckling of web plate.
Q.11

Tacking rivets in tension members, are provided at a pitch in line not exceeding

  • 25 cm
  • 50 cm
  • 75 cm
  • 100 cm
Q.12

The net area of round bars to resist the tension, is the area of cross section at

  • mid-section
  • root of the thread
  • difference of (a) and (b)
  • none of these.
Q.13

A web plate is called unstiffened if the ratio of clear depth to thickness is less than

  • 35
  • 50
  • 60
  • 85
  • 90
Q.14

The load on a lintel is assumed as uniformly distributed if the height of the masonry above it, is upto a height of

  • the effective span
  • 1.25 times the effective span
  • 1.50 times the effective span
  • 2.0 times the effective span
  • 2.5 times the effective span.
Q.15

Efficiency of a riveted joint is defined as the ratio of

  • least strength of a riveted joint to the strength of solid plate
  • greatest strength of a riveted joint to the strength of solid plate
  • least strength of a riveted plate to the greatest strength of the riveted joint
  • all the above.
Q.16

The deflection of beams may be decreased by

  • increasing the depth of beam
  • increasing the span
  • decreasing the depth of beam
  • increasing the width of beam
  • none of these.
Q.17

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.18

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

  • 180 t
  • 220 t
  • 230 t
  • 260 t
  • 270 t
Q.19

The safe working pressure for a spherical vessel 1.5 m diameter and having 1.5 cm thick wall not to exceed tensile stress 50kg/cm2 , is

  • 16 kg/cm2
  • 18 kg/cm2
  • 20 kg/cm2
  • 22 kg/cm2
Q.20

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.21

Factor of safety is the ratio of

  • yield stress to working stress
  • tensile stress to working stress
  • compressive stress to working stress
  • bearing stress to working stress
  • bearing stress to yield stress.
Q.22

On eccentrically loaded columns, the equivalent axial load may be obtained by

  • adding the axial load, eccentric load, the product of the bending moment due to eccentric load and the appropriate bending factor
  • adding the axial load and eccentric load and subtracting the product of bending moment and appropriate bending factor
  • dividing the sum of axial load and eccentric load by the product of the bending moment and appropirate bending factor
  • none of these.
Q.23

A structural member subjected to tensile force in a direction parallel to its logitudinal axis, is generally known as

  • a tie
  • a tie member
  • a tension member
  • all the above.
Q.24

Maximum permissible slenderness ratio of a member normally acting as a tie in a roof truss, is

  • 180
  • 200
  • 250
  • 300
  • 350
Q.25

When two plates are placed end to end and are joined by two cover plates, the joint is known as

  • lap joint
  • butt joint
  • chain riveted lap joint
  • zig-zag riveted lap joint
  • double cover butt joint.
Q.26

The channels get twisted symmetrically with regard to its axis

  • parallel to flanges
  • parallel to web
  • perpendicular to flanges
  • perpendicular to web.
Q.27

The effective length of a compression member of length L held in position at both ends but not restrained in direction, is

  • L
  • 0.67 L
  • 0.85 L
  • 1.5 L
  • 2 L
Q.28

Pick up the correct statement from the following:

  • The slenderness ratio of lacing bars for compression members should not exceed 145
  • The minimum width of lacing bar connected with rivets of nominal diameter 16 mm, is kept 50 mm
  • The minimum thickness of a flat lacing bar is kept equal to one-fortieth of its length between inner end rivets
  • The angle of inclination of lacing bars and the axis of the members should be between 40° and 70°
  • All the above.
Q.29

Working shear stress on the gross area of a rivet as recommended by Indian Standards, is

  • 785 kg/cm2
  • 1025 kg/cm2
  • 2360 kg/cm2
  • none of these.
Q.30

The stress in the wall of a thin cylinder subjected to internal pressure, is

  • hoop compression
  • shear
  • torsional shear
  • hoop tension.
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