Steel Structures Design MCQ Questions and Answers in Civil Engineering

Question - Rolled steel equal and unequal sections are designated as ISA followed by ?
a) lengths and thickness of legs of web
b) width of flange and depth of web
c) depth of section and weight per metre length
d) any one of the above

Answer : A

Question - Any major beam in a structure is known as a ?
a) subsidiary beam
b) joist
c) girder
d) secondary beam

Answer : C

Question - The dead load includes ?
a) self-weight of the structure
b) all superimposed loads
c) weight of stationary equipments
d) weight of furniture

Answer : A

Question - Within the elastic range, the bulk modulus of elasticity is defined as the ratio of ?
a) longitudinal stress to the longitudinal strain
b) shearing stress to the shearing strain
c) hydrostatic stress to the volumetric strain
d) none of the above

Answer : C

Question - Which of the following statement is wrong ?
a) The dead loads are known in the beginning of the design
b) The live load is expressed as uniformly distributed static load
c) The weight of furniture comes under live load
d) all of the above

Answer : A

Question - Rolled steel angle sections are classified as ?
a) two series
b) three series
c) four series
d) five series

Answer : A

Question - The working stress is the stress which may be developed in the member ?
a) causing structural damage to it
b) causing residual strain
c) without causing structural damage to it
d) none of these

Answer : C

Question - The effective length of a fillet weld is taken as ?
a) the actual length plus twice the size of weld
b) the actual length minus twice the size of weld
c) the actual length plus thrice the size of weld
d) the actual length minus thrice the size of weld

Answer : D

Question - The axial load which is sufficient to keep the column in a slight deflected shape is called ?
a) critical load
b) crippling load
c) buckling load
d) any one of these

Answer : D

Question - The ratio of transverse strain to the longitudinal strain under an axial load is known as ?
a) tangent modulus of elasticity
b) bulk modulus of elasticity
c) modulus of rigidity
d) Poisson's ratio

Answer : D

Question - The value of Poisson's ratio for steel within the elastic region ranges from ?
a) 0.17 to 0.25
b) 0.25 to 0.33
c) 0.33 to 0.41
d) 0.41 to 0.49

Answer : B

Question - A fillet weld stressed in transverse shear is known as ?
a) side fillet weld
b) end fillet weld
c) diagonal fillet weld
d) all of these

Answer : B

Question - A piece of round steel forged in place to connect two or more steel members is known as a ?
a) bolt
b) rivet
c) screw
d) stud

Answer : B

Question - Allowable working stress for struts may be assumed as ?
a) 60 N/mm²
b) 80 N/mm²
c) 100 N/mm²
d) 120 N/mm²

Answer : A

Question - The large deflections in beam ?
a) may result in cracking of ceiling plaster
b) indicate the lack of rigidity
c) may cause the distortions in the connections
d) all of the above

Answer : D

Question - The buckling load in a steel column is ?
a) related to the length
b) directly proportional to slenderness ratio
c) inversely proportional to slendeness ratio
d) non-linearly to the slenderness ratio

Answer : A

Question - The number of batten plates should be such that it divides the column longitudinally in atleast ............... parts ?
a) two
b) three
c) four
d) five

Answer : B

Question - When the ends of the column are faced for bearing over the whole area, the rivets essential to hold the connected members are designed for .................. axial load and other forces acting on the column ?
a) 50%
b) 75%
c) 85%
d) 100%

Answer : A

Question - Which of the following statement is wrong ?
a) Columns are supported on column bases
b) Column bases transmit the column load to the concrete or masonry foundation blocks
c) Column load is spread over large area on concrete or masonry foundation blocks
d) none of the above

Answer : D

Question - When the load does not pass through the shear centre of the beam, it produces ?
a) torsional moment only
b) bending moment only
c) torsional moment along with the bending moment
d) none of the above

Answer : C

Question - Slenderness ratio of the lacing bar for compression member should not exceed ?
a) 125
b) 135
c) 145
d) 155

Answer : C

Question - The size of deep penetration fillet weld is specified as minimum leg length plus ?
a) 1.2 mm
b) 2.4 mm
c) 3.6 mm
d) 4.8 mm

Answer : B

Question - The hot driven rivets are ?
a) power driven field rivets
b) power driven shop rivets
c) hand driven rivets
d) all of these

Answer : D

Question - In order to determine the allowable stress in axial compression, Burean of Indian Standards has adopted ?
a) Perry-Robertson formula
b) Euler's formula
c) Secant formula
d) Rankine's formula

Answer : C

Question - When a body is subjected to a system of loads and as a result of this, some deformation takes If the resistance is set up against this deformation, the body is known as a ?
a) compressed member
b) tensile member
c) structure
d) all of these

Answer : D

Question - The wire ropes ?
a) have the advantages of flexibility and strength
b) require special fittings for proper end connections
c) are used as guy wires with the steel towers
d) all of the above

Answer : D

Question - The stability of a structure is ensured if the restoring moment is ........... the maximum overturning moment ?
a) equal to
b) smaller than
c) greater than
d) none

Answer : C

Question - The strength of a riveted joint is equal to the ?
a) strength of joint against shearing of the rivets
b) strength of joint against bearing of the rivets
c) strength of plate in tearing
d) least of the value obtained in (a), (b) and (c)

Answer : D

Question - A rolled I-section provides ?
a) large moment of inertia about X-axis with less cross-sectional area
b) large moment of resistance as compared to the other sections
c) greater lateral stability
d) all of the above

Answer : D

Question - When the components of built-up column are connected by a lateral system, the reduction in buckling strength due to shear deflection is ................ that of solid built-up columns ?
a) equal to
b) less than
c) more than
d) none

Answer : C

Question - The effective length of a column (l), held in position at both ends but not restained in direction. is equal to ?
a) 0.67 L
b) 0.85 L
c) L
d) 1.2 L

Answer : C

Question - If the thickness of plate is t mm and the nominal diameter of rivet is d mm, then according to Inwin's formula ?
a) d= t root6
b) d= 6 root t
c) d= root 6t
d) d= 6t

Answer : B

Question - Which of the following statement is correct ?
a) The length of end connections of angle or channel section to a gusset plate is reduced by using lug angles
b) When lug angles are used to connect an angle member, the gross area of the member shall be taken as effective
c) The rivets connecting lug angle and gusset plates are provided less than the number of rivets required by computation
d) all of the above

Answer : A

Question - Which of the following statement is correct ?
a) The rolled steel tubes are efficient structural sections to be used as compression members
b) The rolled steel flats are used for lacing of elements in built-up members
c) The rolled steel bars threaded or looped at the ends are used as tension members
d) all of the above

Answer : D

Question - The effective area of a butt weld is taken as the .............. of the effective throat thickness and the effective length of butt weld ?
a) sum
b) difference
c) product
d) ratio

Answer : C

Question - When a single angle strut is connected with two or more number of rivets, its effective length is adopted as ............. times the length of the strut centre to centre of intersection of each end. ?
a) 0.65
b) 0.75
c) 0.85
d) 0.95

Answer : C

Question - If the same number of rivets are used in the joints, then which of the following pattern will yield highest efficiency ?
a) Chain riveting
b) Zig-zag riveting
c) Diamond riveting
d) all of these

Answer : C

Question - The reinforcement of butt weld ?
a) is ignored in calculating stresses
b) increases efficiency of joint
c) should not exceed 3 mm
d) all of these

Answer : D

Question - A skeleton structure is one in which the member is represented by a ?
a) circular curve
b) straight curve
c) line
d) all of these

Answer : C

Question - If the width and thickness of a structure is small in comparison to its length, it is Known as ?
a) one dimensional structure
b) two dimensional structure
c) three dimensional structure
d) none of these

Answer : A

Question - Rolled steel flats designated by 50 ISF 8 means that the flat is of ?
a) 50 mm length and 8 mm thick
b) 50 mm width and 8 mm thick
c) 50 mm thick and 8 mm length
d) 50 mm thick and 8 mm width

Answer : B

Question - Which of the following statement is wrong ?
a) A minimum edge distance equal to 1.5 times gross diameter of rivet measured from the rivet hole is provided in the riveted joint
b) When the grip of rivets carrying calculated loads exceed 6 times the diameter of the holes, then the rivets are subjected to bending in addition to shear and bearing
c) For compression members composed of two components back to back, the tacking rivets shall be at a pitch in a line not exceeding 600 mm
d) none of the above

Answer : D

Question - For rivet diameters upto 24 mm, the diameter of rivet hole is larger than the diameter of rivet by ?
a) 1 mm
b) 1.5 mm
c) 2 mm
d) 2.5 mm

Answer : B

Question - Bending stress may develop in the case of ?
a) lap joints
b) single cover butt joints
c) double cover butt joints
d) all of these

Answer : A

Question - Tacking rivets in compression members are used, if the maximum distances between centres of two adjacent rivets exceeds ?
a) 12 t or 200 mm whichever is less
b) 16 t or 200 mm whichever is less
c) 24 t or 300 mm whichever is less
d) 32 t or 300 mm whichever is less

Answer : D

Question - The weakest plane in a fillet weld is ?
a) a side parallel to the force
b) a side normal to the force
c) along the throat
d) normal to the throat

Answer : C

Question - In a tension member, when one or more than one rivet hole is off the line, then the failure of plate depends upon ?
a) diameter of rivet hole
b) pitch of rivets
c) gauge of rivets
d) all of these

Answer : D

Question -A steel wire when used as a tie requires ?
a) no prestressing
b) nominally prestressing
c) pretensioning to its full capacity
d) prestressing to half it capacity

Answer : B

Question - Rivet value is equal ?
a) strength of a rivet in shearing
b) strength of a rivet in bearing
c) minimum of the value obtained in (a) and (b)
d) maximum of the value obtained in (a) and (b)

Answer : C

Question - A symmetrical channel section is made of a material which is equally strong in tension and compression. It is used as a simply supported beam with its web horizontal to carry vertical loads. It will be ?
a) strongest if the web is used as a top face
b) strongest if the web is used as a bottom face
c) equally strong in (a) and (b)
d) not possible

Answer : C

Question - A two dimensional structure is also called ........ structure ?
a) line supporting
b) surface
c) space
d) none

Answer : B

Question - The batten plates used to connect the components of built-up column are designed to resist ?
a) longitudinal shear
b) transverse shear
c) moment arising from transverse shear
d) none of these

Answer : A

Question - Which of the following statement is correct ?
a) The welded structures are lighter than riveted structures
b) The welding allows the arrangement of structural components in such a manner that the joint provides maximum efficiency
c) During welding, the member do not get distorted
d) all of the above

Answer : B

Question - A strut is a structural member subjected to ?
a) compression in direction perpendicular to its longitudinal axis
b) tension in a direction parallel to its longitudinal
c) tension in a direction perpendicular to its longitudinal axis
d) compression in a direction parallel to its longitudinal axis

Answer : D

Question - Aluminium is being increasingly used for structural purposes because ?
a) the strength to unit weight ratio of aluminium is high
b) it requires less maintenance
c) its coefficient of thermal expansion is half that of steel
d) Both b and c

Answer : D

Question - In roof trusses, the most frequently used section is ?
a) two-angle sections placed back to back
b) two-channel sections placed back to back
c) two-channel sections placed at a distance apart
d) four angle section

Answer : A

Question - The perforated cover plates are particularly suitable for a built up box section consisting of ?
a) two angle sections
b) two channel sections
c) four channel sections
d) four angle sections

Answer : D

Question - The rolled steel beams are mainly used ?
a) in the built up sections of columns
b) to resist bending
c) to resist axial forces (compressive or tensile)
d) all of the above

Answer : D

Question - The load, which produces the average axial tensile stress in the section equivalent to the maximum combined stress at the extreme fibre of the section, is known as ?
a) equivalent axial tensile load
b) buckling load
c) crippling load
d) critical load

Answer : A

Question - The failure of a riveted joint may take place due to ?
a) shear failure of rivets
b) bearing failure of rivets
c) tearing failure of plates
d) all of these

Answer : D

Question - The maximum deflection, for a simply supported beam, should not exceed ?
a) 1/125 of span
b) 1/225 of span
c) 1/325 of span
d) 1/425 of span

Answer : C

Question - In direction restraint condition of column ?
a) end of the column is free to change its position
b) rotation about the end of column can take place
c) end of column is not free to change its position
d) rotation about the end of column can take place

Answer : C

Question - Allowable working stress for rolled steel beam section compression members may be assumed as ?
a) 60 N/mm²
b) 80 N/mm²
c) 100 N/mm²
d) 120 N/mm²

Answer : C

Question - The size of rivet is expressed by the ?
a) length of shank
b) diameter of shank
c) type of head
d) none of the above

Answer : B

Question - If V is the velocity of wind in km/h, the intensity of wind pressure is directly proportional to ?
a) V
b) V^2
c) V^3
d) V^4

Answer : B

Question - The value of factor of safety is decided keeping in view ?
a) average strength of material
b) value of design loads
c) value of internal forces
d) all of these

Answer : D

Question - When one is placed above the other and they are connected by means of rivets, the joint is known as ?
a) lap joint
b) single cover butt joint
c) double cover butt joint
d) none of these

Answer : A

Question - When a load is exerted or transferred from one surface to another in contact, the stress is known as ?
a) direct stress
b) bending stress
c) bearing stress
d) shear stress

Answer : C

Question - Net sectional area of a tension member is equal to ?
a) axial pull x allowable stress in axial tension
b) axial pull - allowable stress in axial tension
c) axial pull - allowable stress in axial tension
d) none of the above

Answer : D

Question - Rolled steel beams are designated by the series to which beam sections belong, followed by ?
a) depth of the section and weight per metre length of the beam
b) depth of flange and weight per metre length of the beam
c) width of flange and weight per metre length of the beam
d) width of web and weight per metre length of the beam

Answer : A

Question - According to IS: 800- 1984, lacing bars should resist a transverse shear equal to ........... of the axial load in the member ?
a) 2.5%
b) 5%
c) 7.5 %
d) 10 %

Answer : A

Question - Junction between the flange and web of a beam is known as ?
a) lap joint
b) butt joint
c) fillet
d) shear joint

Answer : C

Question - The effective throat thickness in case of incomplete penetration butt weld is taken as ?
a) 7/8th of the thickness of the thicker part joined
b) 7/8th of the thickness of the thinner part joined
c) 5/7th of the thickness of the thicker part joined
d) 5/7th of the thickness of the thinner part joined

Answer : B

Question - The gross-section of the web of a beam is equal to ?
a) Depth of beam / Web thickness
b) 2 x Depth of beam / Web thickness
c) Depth of beam x Web thickness
d) none of these

Answer : A

Question - In combined footing, the shape for the base of footing should be .......... to support two equal column loads
a) rectangular
b) trapezoidal
c) triangular
d) circular

Answer : A

Question - The effective length of a battened columns should be increased by ?
a) 5%
b) 10%
c) 15%
d) five

Answer : B

Question - Which of the following statement is wrong ?
a) In single lacing, the thickness of flat lacing should not be more than 1/40th length between inner end rivets
b) In double lacing, the thickness of flat lacing should not be more than 1/60th length between inner end rivets
c) In riveted construction, effective length of lacing bars in single lacing is adopted as the length between inner end rivets
d) none of the above

Answer : D

Question - Arc welding is a ?
a) fusion welding
b) pressure welding
c) thermit welding
d) all of these

Answer : A

Question - Which of the following is not a compression member ?
a) Tie
b) Boom
c) Rafter
d) Strut

Answer : A

Question - The allowable stress to which a structural member can be subjected is called ?
a) working stress
b) permissible stress
c) tensile stress
d) both a and b

Answer : D