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This set of Design of Steel Structures Multiple Choice Questions & Answers (MCQs) focuses on Design Of Steel Structures Set 10
Q1 | A riveted joint many experience
- tearing failure of plates
- splitting failure of plates at the edges
- bearing failure of rivets
- all the above
Q2 | Diameter of a bolt hole is usually taken as
- gross diameter of bolt
- nominal diameter + 1.5 mm
- nominal diameter + 2.0 mm
- nominal diameter of bolt
Q3 | The effective length of a double angle strut with angles placed back to back and connected to boththe sides of a gusset plate, by not less than two rivets, is
- 0.5 l
- 0.67 l
- 0.85 l
- 2 l
Q4 | The range of economical spacing of trusses varies from
- l/3 to l/5
- l/4 to 2l/5
- l/3 to l/2
- 2l/5 to 3l/5, where l is span
Q5 | Effective sectional area of a compression member is:
- gross sectional area - area of rivet hole
- gross sectional area + area of rivet hole
- gross sectional area × area of rivet hole
- gross sectional area + area of rivet hole
Q6 | The maximum slenderness ratio of a steel column, the design of which is governed by wind orseismic forces is
- 150
- 180
- 250
- 350
Q7 | In plastic analysis, the shape factor for circular sections, is
- 1.5
- 1.6
- 1.697
- none of these
Q8 | The external wind pressure acting on a roof depends on
- degree of permeability of roof
- slope of roof
- both (a) and (b)
- none of the above
Q9 | The failure of a web plate takes place by yielding if the ratio of the clear depth to thickness of theweb, is less than
- 45
- 55
- 62
- 82
Q10 | The actual thickness of butt weld as compared to the thickness of plate is usually
- more
- less
- equal
- none of the above
Q11 | The ratio of longitudinal stress to strain within elastic limit, is known as
- modulus of elasticity
- shear modulus of elasticity
- bulk modulus of elasticity
- all the above
Q12 | The slenderness ratio of lacing bars should not exceed
- 100
- 120
- 145
- 180
Q13 | In a fillet weld placed on the sides of the base, the metal experiences
- shear
- tension
- compression
- all the above
Q14 | For steel members not exposed to weather, the thickness of steel should not be less than
- 4.5 mm
- 6 mm
- 8 mm
- 10 mm
Q15 | When a tension member consists of two channel sections, the allowance for rivet hole is made fortwo holes from
- each web
- each flange
- each web or one hole from each flange whichever is more
- each web or one hole from each flange whichever is less
Q16 | If a pair of angles placed back to back in tension are connected by one leg of each angle, the neteffective area of the section, is
- a - [b/{1 + 0.35 (b/a)}]
- a + [b/{1 + 0.35 (b/a)}]
- a - [b/{1 + 0.2 (b/a)}]
- a + [b/{1 + 0.2 (b/a)}]
Q17 | P E to be 25% of the computed valueof P and E respectively, the minimum value of the factor of safety is
- 1.00
- 0.67
- 1.67
- 2.67
Q18 | A beam is defined as a structural member subjected to
- axial loading
- transverse loading
- axial and transverse loading
- none of these
Q19 | The allowable stress in axial tension for rolled I-sections and channels, is taken as
- 1420 kg/cm2
- 1500 kg/cm2
- 2125 kg/cm2
- 1810 kg/cm2
Q20 | Secant formula for direct stress in compression, is applicable only for slenderness ratio upto
- 120
- 130
- 140
- 150
Q21 | A compression member consisting of angle sections may be a
- continuous member
- discontinuous single angle strut
- discontinuous double angle strut
- all the above
Q22 | The main advantage of a steel member, is:
- its high strength
- its gas and water tightness
- its long service life
- all the above
Q23 | A riveted joint may experience
- shear failure
- shear failure of plates
- bearing failure
- all the above
Q24 | IS : 800 - 1971 recommends that in a splice plate the number of rivets carrying calculated shearstress through a packing greater than 6 mm thick, is to be increased by 2.5% 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
Q25 | To the calculated area of cover plates of a built-up beam, an allowance for rivet holes to be added,is
- 10 %
- 13 %
- 15 %
- 18 %