MCQOPTIONS
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MCQOPTIONS
This section includes 22 Mcqs, each offering curated multiple-choice questions to sharpen your Civil Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A steel column pinned at both ends has a buckling load of 200kN. If the column is restrained against lateral movement at its mid-height, its buckling load will be |
| A. | 200 kN |
| B. | 283 kN |
| C. | 400 kN |
| D. | 800 kN |
| Answer» E. | |
| 2. |
Angle of inclination of the lacing bar with the longitudinal axis of the column should preferably be between _________. |
| A. | 10° to 30° |
| B. | 30° to 80° |
| C. | 40° to 70° |
| D. | 20° to 70° |
| Answer» D. 20° to 70° | |
| 3. |
A steel rod of 16 mm diameter has been used as a tie in a bracing system but may be subject to a possible reversal of stress due to the wind. What is the maximum permitted length of the member? |
| A. | 1600 mm |
| B. | 1400 mm |
| C. | 1200 mm |
| D. | 1000 mm |
| Answer» C. 1200 mm | |
| 4. |
A steel column is pinned at both ends and has a buckling load of 200 kN. If the column is restrained against lateral movement at its mid-height, its buckling load will be |
| A. | 100 kN |
| B. | 200 kN |
| C. | 400 kN |
| D. | 800 kN |
| Answer» E. | |
| 5. |
Given thatPE = the crippling load given by EulerPC = the load at failure due to direct compressionPR = the load in accordance with the Rankine’s criterion of failurePR is given by |
| A. | \(\frac{{\left( {{P_E} + {P_C}} \right)}}{2}\) |
| B. | \(\sqrt {{P_E} \times {P_C}}\) |
| C. | \(\frac{{{P_C}.{P_E}}}{{{P_C} + {P_E}}}\) |
| D. | None of the above |
| Answer» D. None of the above | |
| 6. |
Consider the following statements in respect of column splicing:1) Splices should be provided close to the point of inflection in member2) Splices should be located near to the point of lateral restraint in a member3) Machined columns for perfect bearing would need splices to be designed for axial force onlyWhich of the above statements are correct? |
| A. | 1 and 2 only |
| B. | 1 and 3 only |
| C. | 2 and 3 only |
| D. | 1, 2 and 3 |
| Answer» C. 2 and 3 only | |
| 7. |
In the design of steel columns, the shear resistance at the proper contact surface between steel base and concrete / grout may be calculated using a friction coefficient of |
| A. | 0.25 |
| B. | 0.35 |
| C. | 0.65 |
| D. | 0.55 |
| E. | 0.45 |
| Answer» F. | |
| 8. |
An ISHB 300 with plastic section modulus of 921.68 × 103 mm3, flange width of 250 mm, the yield stress of 250 N/mm2 is embedded in a pocket base to develop its strength with M 25 concrete in design of beam-column. The required depth will be nearly |
| A. | 475 mm |
| B. | 425 mm |
| C. | 375 mm |
| D. | 325 mm |
| Answer» B. 425 mm | |
| 9. |
In the design of a base plate, the bearing strength of concrete as per the Indian Standard (IS) 800 : 2007, is taken as (fck is characteristic strength of concrete) |
| A. | 0.4 fck |
| B. | 0.45 fck |
| C. | 0.5 fck |
| D. | 0.60 fck |
| Answer» C. 0.5 fck | |
| 10. |
In double lacing, the thickness 't' of flat lacing is |
| A. | t is less than 1/40th length between inner end rivets |
| B. | t is less than 1/50th length between inner end rivets |
| C. | t is less than 1/60th length between inner end rivets |
| D. | t is less than 1/70th length between inner end rivets |
| Answer» D. t is less than 1/70th length between inner end rivets | |
| 11. |
A steel rod of 20 mm diameter is used as a tie member in the roof bracing system and may be subjected to possible reversal of stress due to wind load. What is the maximum permissible length of the member? |
| A. | 1750 mm |
| B. | 2000 mm |
| C. | 3000 mm |
| D. | 2500 mm |
| Answer» B. 2000 mm | |
| 12. |
As per IS:800-2007, what is the permissible bearing pressure between the base plate and the support below? |
| A. | 0.40 fck |
| B. | 0.45 fck |
| C. | 0.50 fck |
| D. | 0.60 fck |
| Answer» E. | |
| 13. |
Maximum permissible slenderness ratio of compressive members which carry dead and superimposed load is |
| A. | 350 |
| B. | 250 |
| C. | 180 |
| D. | 80 |
| Answer» D. 80 | |
| 14. |
For a steel built-up column subjected to an axial force of 1200 kN, the lacing system is to be designed for resisting transverse shear of: |
| A. | 15 kN |
| B. | 20 kN |
| C. | 25 kN |
| D. | 30 kN |
| Answer» E. | |
| 15. |
Consider the following statements for the design of a laced column:1) In a bolted construction, the minimum width of the lacing bar shall be three times the nominal diameter of the end bolt.2) The thickness of the flat of a single lacing system shall be not less than one-fortieth of its effective length3) The angle of inclination of the lacing bar should be less than 40° with the axis of the built-up column4) The lacing shall be designed for a transverse shear of 2.5% of the axial load on the columnWhich of the above statements are correct? |
| A. | 1, 2 and 3 only |
| B. | 1, 2 and 4 only |
| C. | 1, 3 and 4 only |
| D. | 1, 2, 3 and 4 |
| Answer» C. 1, 3 and 4 only | |
| 16. |
If a rolled steel flat designated as 55 I.S.F. 12 mm is used as lacing, then minimum radius of gyration will be ________. |
| A. | 3 mm |
| B. | 6 mm |
| C. | 3.46 mm |
| D. | 3.8 mm |
| Answer» D. 3.8 mm | |
| 17. |
A steel column of ISHB 350 @72.4 kg/m is subjected to a factored axial compressive load of 2000 kN. The load is transferred to a concrete pedestal of grade M20 through square base plate. Consider the bearing strength of concrete as 0.45 fck, where fck is the characteristic strength of concrete. Using limit state method and neglecting the self-weight of base plate and steel column, the length of a side of the base plate to be provided is |
| A. | 39 cm |
| B. | 42 cm |
| C. | 45 cm |
| D. | 48 cm |
| Answer» E. | |
| 18. |
A column member of length “L” which cannot sway has a rigid foundation at its bottom. Its top is held with heavy beams. The effective length of the column is: |
| A. | 1.5L |
| B. | 1.0 L |
| C. | 0.8 L |
| D. | 0.65 L |
| Answer» E. | |
| 19. |
A column splice is used to increase: |
| A. | The strength of the column. |
| B. | The rigidity of the column. |
| C. | The cross - sectional area of the column. |
| D. | The length of the column. |
| Answer» E. | |
| 20. |
Battens provided for a compression member shall be designed to carry a transverse shear equal to: |
| A. | 2.5% of axial force in member |
| B. | 5% of axial force in member |
| C. | 10% of axial force in member |
| D. | 20% of axial force in member |
| Answer» B. 5% of axial force in member | |
| 21. |
An angle section can be used as purlin when the slope of the roof truss is _________. |
| A. | Between 40° and 70° |
| B. | Less than 30° |
| C. | Greater than 30° |
| D. | Less than 45° |
| Answer» C. Greater than 30° | |
| 22. |
As per IS 1893 (part 1):2002 what is the corrected value of N for seismic zone III and the depth below ground is more than 10m? |
| A. | 25 |
| B. | 30 |
| C. | 15 |
| D. | 20 |
| Answer» B. 30 | |