MCQOPTIONS
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MCQOPTIONS
This section includes 153 Mcqs, each offering curated multiple-choice questions to sharpen your Design Steel Structures knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following option is incorrect? |
| A. | Effective length of groove weld should not be less than 4 times the weld size |
| B. | Effective length of groove weld should be less than 4 times the weld size |
| C. | Effective length of intermittent weld should not be less than 4 times the weld size |
| D. | Effective length of intermittent weld should have a minimum length 80mm |
| Answer» C. Effective length of intermittent weld should not be less than 4 times the weld size | |
| 2. |
The length of overlap of plates to be fillet welded in lap joint ____ |
| A. | should not be less than 4 times the thickness of thinner part |
| B. | should be less than 4 times the thickness of thinner part |
| C. | should be less than 2 times the thickness of thinner part |
| D. | should not be less than 2 times the thickness of thinner part |
| Answer» B. should be less than 4 times the thickness of thinner part | |
| 3. |
The effective throat thickness is K times the size of weld. What is the value of K when angle between fusion faces is 80˚? |
| A. | 0.5 |
| B. | 0.65 |
| C. | 0.7 |
| D. | 1 |
| Answer» D. 1 | |
| 4. |
The reinforcing bars in beams are not bundled in contact if the diameter of the bars, exceeds |
| A. | 12 mm |
| B. | 20 mm |
| C. | 35 mm |
| D. | 36 mm |
| Answer» E. | |
| 5. |
The effective length of lacing is the distance |
| A. | between the inner end rivets of the bar for single lacing |
| B. | 0.7 of the distance between the inner end rivets of the bar for double lacing |
| C. | between the inner ends of effective lengths of welds connecting the members |
| D. | all the above. |
| Answer» E. | |
| 6. |
The value of the constant K in the formula As = K.bd/fs for determining the minimum area of tension reinforcement in a beam is |
| A. | 0.95 |
| B. | 0.90 |
| C. | 0.85 |
| D. | 0.80 |
| Answer» D. 0.80 | |
| 7. |
The pH value of water to be used in concrete shall generally be |
| A. | not more than 7 |
| B. | not less than 6 |
| C. | not less than 5 |
| D. | not more than 6 |
| Answer» C. not less than 5 | |
| 8. |
Bending moment values for filler joists |
| A. | near middle of end span is + ꙍL²/10 |
| B. | at support next to end support is - ꙍL²/10 |
| C. | at middle of interior spans is + ꙍL²/12 |
| D. | all the above. |
| Answer» E. | |
| 9. |
If the end of a beam of span L carrying a designed load W is partially restrained by a built up wall, it is designed to resist the negative moment at the face of the support, equal to |
| A. | WL/10 |
| B. | WL/12 |
| C. | WL/16 |
| D. | WL/24 |
| Answer» E. | |
| 10. |
Pick up the correct statement applicable to cased columns. |
| A. | Single I-beam or channels back with or without flange plates may be used |
| B. | The overall dimensions of the steel section do not exceed 750 x 450 mm over plate if used |
| C. | The column is unpainted and is solidly encased in ordinary dense concrete with 10 mm aggregates having a minimum of cube strength 160 kg/cm² at 28 days |
| D. | All the above. |
| Answer» E. | |
| 11. |
The grade of reinforced concrete to be used in sea water or structures exposed to sea water should be |
| A. | M 10 |
| B. | M 15 |
| C. | M 20 |
| D. | M 30 |
| Answer» D. M 30 | |
| 12. |
The maximum pitch of rivets for compression and tension members should not exceed |
| A. | 32 t |
| B. | 200 mm |
| C. | 300 mm |
| D. | both (a) and (c) |
| Answer» E. | |
| 13. |
For spans upto 10 m, the safe span to depth ratio for |
| A. | cantilever is 7 |
| B. | simply supported beams is 20 |
| C. | continuous beams is 26 |
| D. | all the above. |
| Answer» E. | |
| 14. |
To achieve uniform colour and consistency of the concrete by using ordinary Portland cement, the mixing time may be |
| A. | 1/2 to 1 minute |
| B. | 1 to 1.5 minutes |
| C. | 1.5 to 2 minutes |
| D. | 2 to 2.5 minutes |
| Answer» D. 2 to 2.5 minutes | |
| 15. |
Pick up the correct statement for the web stiffeners. |
| A. | vertical stiffeners are spaced at a distance not greater than 1.5 d and not less than 0.33 d |
| B. | d is the distance between flange angles or the clear distance between flanges |
| C. | for horizontal stiffeners, d is the clear distance between the horizontal stiffener and the tension flange |
| D. | all the above. |
| Answer» E. | |
| 16. |
Columns are designed for a minimum eccentricity equal to 1/30 (unsupported length ofthe column), subject to a minimum of |
| A. | 5 mm |
| B. | 10 mm |
| C. | 15 mm |
| D. | 20 mm |
| Answer» E. | |
| 17. |
All reinforcement should be free from |
| A. | loose mill scales |
| B. | loose rust |
| C. | paints |
| D. | all the above. |
| Answer» E. | |
| 18. |
Creep of concrete is assumed proportional to the stress if the stress does not exceed .......of the characteristic compressive strength |
| A. | 15% |
| B. | 20% |
| C. | 25% |
| D. | 33% |
| Answer» E. | |
| 19. |
The minimum length of the side or diameter of the column base shall not be less than (where d is the minimum diameter of the column). |
| A. | (d + 75) mm |
| B. | 1.2 (d - 75) mm |
| C. | 1.5 (d + 75) mm |
| D. | 1.6 (d + 75) mm |
| Answer» D. 1.6 (d + 75) mm | |
| 20. |
If the ends of the compression flanges of simply supported girders are fully restrained against lateral bending, the effective length is taken as |
| A. | span |
| B. | 0.85 x span |
| C. | 0.7 x span |
| D. | 0.5 x span |
| Answer» D. 0.5 x span | |
| 21. |
The maximum bending moment in a purlin of length L when subjected to a distributed load ω, is assumed |
| A. | ꙍL/6 |
| B. | ꙍL/8 |
| C. | ꙍL/10 |
| D. | ꙍL/12 |
| Answer» D. ꙍL/12 | |
| 22. |
For under water concreting. |
| A. | at least 10 percent more cement is required as compared to dry conditions |
| B. | the volume of coarse aggregates shall not be less than one and half times and not more than twice that of fine aggregate |
| C. | the slump should not be less than 100 mm and not more than 180 mm |
| D. | All the above |
| Answer» E. | |
| 23. |
The depth 'd' of webs without horizontal stiffeners and consisting of tongue plates is taken lesser than the depth of the girder between the flanges less the sum of the depth of the tongue plates, and |
| A. | eight times the sum of the thickness of tongue plates |
| B. | six times the sum of the thickness of tongue plates |
| C. | four times the sum of the thickness of tongue plates |
| D. | None of the above. |
| Answer» B. six times the sum of the thickness of tongue plates | |
| 24. |
Minimum thickness of steel work directly exposed to weather but not accessible for cleaning and repainting, the thickness should be not less than |
| A. | 4 mm |
| B. | 6 mm |
| C. | 7 mm |
| D. | 8 mm |
| Answer» E. | |
| 25. |
The grade of plain concrete to be used in sea water or structures exposed to sea water, should be |
| A. | M lO |
| B. | M 15 |
| C. | M 20 |
| D. | M 30 |
| Answer» C. M 20 | |
| 26. |
As per IS : 800-1982, the coefficient of expansion for steel per degree centigrade per unit length, is |
| A. | 0.000011 |
| B. | 0.000012 |
| C. | 0.000013 |
| D. | 0.000014 |
| Answer» C. 0.000013 | |
| 27. |
The flat slab is a reinforced concrete slab with or without drops and is supported |
| A. | on columns without column head |
| B. | on columns with column head |
| C. | on beams |
| D. | None of these. |
| Answer» D. None of these. | |
| 28. |
The anchorage value of standard U-type hook of a reinforcing bar of diameter d in tension, is |
| A. | 4 d |
| B. | 8 d |
| C. | 12 d |
| D. | 16 d |
| Answer» E. | |
| 29. |
For the stability of a structural part, the weight or anchorage should be |
| A. | 1.2 times the minimum overturning moment due to dead load |
| B. | 1.4 times the minimum overturning moment due to dead load |
| C. | sum of (a) and (b) |
| D. | none of these. |
| Answer» D. none of these. | |
| 30. |
The individual part of the structures is subjected to a load test for 24 hours by applying a load equal to full dead load of the structure plus |
| A. | imposed load |
| B. | 1.15 times imposed load |
| C. | 1.25 times imposed load |
| D. | 1.3 times imposed load. |
| Answer» D. 1.3 times imposed load. | |
| 31. |
A simply supported beam shall be deemed to be a deep beam if the ratio of its effective span to overall depth, is |
| A. | 2.0 |
| B. | 2.5 |
| C. | less than 2 |
| D. | less than 2.5 |
| Answer» B. 2.5 | |
| 32. |
For the proportions |
| A. | 1 : 1.5 the maximum size of aggregates, is 10 mm |
| B. | 1 : 2 the maximum size of aggregates, is 20 mm |
| C. | 1 : 2.5 the maximum size of aggregates, is 40 mm |
| D. | All the above. |
| Answer» E. | |
| 33. |
In limit state method, the design bond stress of M 30 grade concrete for plain bars in tension, is |
| A. | 1.0 N/mm² |
| B. | 1.2 N/mm² |
| C. | 1.4 N/mm² |
| D. | 1.5 N/mm² |
| Answer» E. | |
| 34. |
In case of continuous beams, the distance between the points of zero moment, may be obtained as (where l is the effective span). |
| A. | 0.5 l |
| B. | 0.6 l |
| C. | 0.7 l |
| D. | 0.8 l |
| Answer» D. 0.8 l | |
| 35. |
If the specified thickness of a footing is 100 cm, the depth of the form work may be tolerated from |
| A. | - 2 mm to + 2 mm |
| B. | - 3 mm to + 3 mm |
| C. | - 4 mm to + 4 mm |
| D. | - 5 mm to + 5 mm |
| Answer» E. | |
| 36. |
The ratio of the effective length to the least radius of gyration of a tie member of a roof truss, which gets subjected to reversal of stress shall not exceed |
| A. | 180 |
| B. | 200 |
| C. | 240 |
| D. | 350 |
| Answer» E. | |
| 37. |
Moist sand may contain surface water by mass upto |
| A. | 7.5% |
| B. | 5.0% |
| C. | 2.5% |
| D. | 1.25% |
| Answer» D. 1.25% | |
| 38. |
As per IS : 1982, the permissible axial tension in rolled I-beams and channels, is |
| A. | 1500 kg/cm² |
| B. | 1800 kg/cm² |
| C. | 1400 kg/cm² |
| D. | 1420 kg/cm² |
| Answer» B. 1800 kg/cm² | |
| 39. |
The spans of filler joists supporting a slab may be considered approximately equal if the longest span does not exceed the shortest span more than |
| A. | 5% |
| B. | 10% |
| C. | 15% |
| D. | 20% |
| Answer» D. 20% | |
| 40. |
The distance of the critical section for shear from the periphery of the column or drop panal is at a distance (where d is effective depth of flat slab). |
| A. | d |
| B. | d/2 |
| C. | d/3 |
| D. | d/5 |
| Answer» E. | |
| 41. |
Generally acceptable nominal size of aggregates for reinforced concrete, is |
| A. | 10 mm |
| B. | 15 mm |
| C. | 20 mm |
| D. | 25 mm |
| Answer» D. 25 mm | |
| 42. |
The thickness of the steel |
| A. | exposed to weather and accessible for repainting, should be not less than 6 mm |
| B. | in main members not directly exposed to weather should not be less than 6 mm |
| C. | in secondary members not directly exposed to weather shall be not less than 4.5 mm |
| D. | All the above. |
| Answer» E. | |
| 43. |
The tolerances for the form work of columns and beams range from |
| A. | - 3 mm to + 6 mm |
| B. | - 4 mm to + 8 mm |
| C. | - 6 mm to + 12 mm |
| D. | - 8 mm to + 12 mm |
| Answer» D. - 8 mm to + 12 mm | |
| 44. |
Minimum diameter of the lateral ties should not be less than |
| A. | 4 mm |
| B. | 5 mm |
| C. | 6 mm |
| D. | 10 mm |
| Answer» C. 6 mm | |
| 45. |
The structure which is subjected to an imposed load after 72 hours for a period of 24 hours, is deemed to be unacceptable if it fails to recover the net deflection less than |
| A. | 90% |
| B. | 85% |
| C. | 80% |
| D. | 75% |
| Answer» D. 75% | |
| 46. |
If a column is subjected to dead load and super imposed load only, the maximum ratio 1/r should not be greater than |
| A. | 180 |
| B. | 250 |
| C. | 350 |
| D. | 400 |
| Answer» B. 250 | |
| 47. |
If the dimensions of a rectangular section of a short column are 15 cm x 20 cm, its unsupported length should be restricted to |
| A. | 9.0 m |
| B. | 10.0 m |
| C. | 11.0 m |
| D. | 12.0 m |
| Answer» B. 10.0 m | |
| 48. |
For battened struts, the effective length is increased by |
| A. | 5% |
| B. | 7.5% |
| C. | 10% |
| D. | 12.5% |
| Answer» D. 12.5% | |
| 49. |
The maximum deflection of a structure should not normally exceed lesser of the span/350 or |
| A. | 10 mm |
| B. | 15 mm |
| C. | 20 mm |
| D. | 25 mm |
| Answer» D. 25 mm | |
| 50. |
The test strength of the sample is taken as the average of the strength of |
| A. | 2 specimens |
| B. | 3 specimens |
| C. | 4 specimens |
| D. | 5 specimens |
| Answer» C. 4 specimens | |