SSC Scientific Assistant - Building Construction 1000+ MCQ [Solved] PDF Download

1. The angle between skew back of a flat arch and the horizontal, is kept approximately equal to
A. 0°
B. 30°
C. 60°
D. 90°
Answer : C

2. The arrangement made to support an unsafe structure temporarily, is known as
A. Shoring
B. Scaffolding
C. Underpinning
D. Jacking
Answer : A

3. Grillage foundation
A. Is used to transfer heavy structural loads from steel columns to a soil having low bearing capacity
B. Is light and economical
C. Does not require deep cutting as the required base area with required pressure intensity is obtained at a shallow depth
D. All the above
Answer : D

4. The differential settlement in case of foundations on sandy soils should not exceed
A. 25 mm
B. 40 mm
C. 65 mm
D. 100 mm
Answer : A

5. The form work from the slabs excluding props, can be removed only after
A. 1 day
B. 4 days
C. 7 days
D. 14 days
Answer : B

6. The angular steps used for changing direction of the stairs, are called
A. Round steps
B. Angular steps
C. Winders
D. Radial steps
Answer : C

7. The wedge shaped bricks forming an arch ring, are called
A. Soffits
B. Voussoirs
C. Haunches
D. Spandrils
Answer : B

8. In which of the following directions, the strength of timber is maximum?
A. Parallel to grains
B. 45° to grains
C. Perpendicular to grains
D. Same in all directions
Answer : A

9. The disease of dry rot in timber is caused by
A. Lack of ventilation
B. Alternate wet and dry conditions
C. Complete submergence in water
D. None of the above
Answer : A

10. The brick laid with its breadth parallel to the face of a wall, is known as
A. Header
B. Stretcher
C. Closer
D. None of these
Answer : A

11. The form Work including the props can be removed from beams, only after
A. 3 day
B. 7 days
C. 14 days
D. 21 days
Answer : C

12. A projecting piece usually provided to support a truss, is
A. Cornice
B. Coping
C. Frieze
D. Lintel
Answer : C

13. Pick up the correct statement about silt soil from the following:
A. The silt soil has particle size from 0.02 mm to 0.06 mm
B. In organic fine grained silt soil possesses no plasticity
C. The least plastic type normally consists of more or less equidimensional grains of quartz
D. All the above
Answer : D

14. The maximum total settlement for raft foundation on clayey soils should be limited to
A. 25 mm
B. 25 to 40 mm
C. 40 to 65 mm
D. 65 to 100 mm
Answer : D

15. Suitable spacing of timber piles, is
A. 50 cm
B. 60 cm
C. 80 cm
D. 90 cm
Answer : D

16. For different layers of cement concrete floor. Pick up the incorrect statement from the following:
A. The lowest layer consists of consolidated ground
B. A 10 cm thick clean sand is laid on consolidated ground
C. A 10 cm lime concrete (1 : 4 : 8) is laid on clean sand
D. A 10 cm thick cement concrete (1 : 2 : 4) is laid on top layer
Answer : D

17. The process of filling hollow spaces of walls before plastering, is known
A. Hacking
B. Dubbing out
C. Blistering
D. Peeling
Answer : B

18. In horizontal D.P.C, thickness of cement concrete (1 : 2 : 4) is
A. 2 cm
B. 4 cm
C. 6 cm
D. 8 cm
Answer : B

19. The depth of an arch is the distance between
A. Ground level and springing line
B. Crown and springing line
C. Crown and ground level
D. Intrados and extrados
Answer : D

20. The maximum bearing capacity of soil is that of
A. Black cotton soil
B. Loose fine sandy soil
C. Dry coarse sandy soil
D. Hard rocks
Answer : D

21. The process of working a flat for the finishing coat, is known
A. Dubbing out
B. Floating
C. Knitting
D. Blistering
Answer : B

22. Stud(s) of a common wooden partition
A. Are vertical wooden members
B. Is the upper horizontal wooden member
C. Is the lower horizontal wooden member
D. Are the intermediate horizontal wooden members
Answer : A

23. Pick up the correct statement from the following:
A. The bearing capacity of a pile is defined as the load which can be sustained by the pile without producing excessive settlement
B. The safe bearing capacity of a pile is obtained by dividing the ultimate bearing capacity with a suitable factor of safety
C. The factor of safety for piles is taken as 6
D. All the above
Answer : D

24. Slate
A. Is a metamorphic rock
B. Splits into thin sheets along its bedding planes
C. Has a smooth surface and contains alumina and silica
D. Possesses good water absorption capacity
Answer : A

25. The method of moving each brick through a small horizontal distance before it is finally laid in any brick wall and pressing it by means of brick hammer, is known as
A. Trowelling
B. Laying
C. Grouting
D. Placing
Answer : B

26. The voussoir placed at crown of an arch, is known as a
A. Key
B. Soffit
C. Springer
D. Haunch
Answer : A

27. A concrete structure is set on fire and the temperature raises to 1000°C. The strength of concrete as compared to original strength reduces to
A. 10 %
B. 15 %
C. 20 %
D. 25 %
Answer : C

28. The X-ray rooms are plastered with
A. Plaster of Paris
B. Barium plaster
C. Martin's cement
D. Keen's cement
Answer : B

29. In soft clay of low bearing capacity, the type of steel pile generally used, is
A. H-pile
B. Screw pile
C. Disc pile
D. Pipe pile
Answer : B

30. Queen closer may be placed
A. In header course
B. In stretcher course
C. In header course next to first brick
D. In stretcher course next to first brick
Answer : C

31. The under surface of an arch, is called
A. Soffit
B. Intrados
C. Haunch
D. Back
Answer : A

32. The maximum permissible differential settlement, in case of foundations in clayey soil, is usually limited to
A. 10 mm
B. 20 mm
C. 30 mm
D. 40 mm
Answer : D

33. In flat roof of reinforced cement concrete, the recommended angle of slope, is
A. Zero
B. A few degrees
C. 10°
D. 200°
Answer : B

34. The type of pile which is driven at an inclination to resist inclined forces is known as
A. Friction pile
B. Sheet pile
C. Batter pile
D. Anchor pile
Answer : C

35. In any good staircase, the maximum and minimum pitch respectively should be
A. 90° and 0°
B. 75° and 30°
C. 60° and 10°
D. 40° and 25°
Answer : D

36. Pick up the correct statement from the following:
A. A combined footing is so proportioned that centre of gravity of supporting area coincides with centre of gravity of two column loads
B. A combined footing may be either rectangular or trapezoidal in shape
C. Trapezoidal shaped footings may be provided under any loading
D. All the above
Answer : D

37. The maximum total settlement for isolated foundations on clayey soils should be limited to
A. 25 mm
B. 40 mm
C. 65 mm
D. 100 mm
Answer : C

38. In grillage foundations, distance between flanges of grillage beams, is kept
A. 40 cm
B. Equal to flange width
C. Twice the flange width
D. Maximum of (a), (b) and (c)
Answer : C

39. The minimum distance between the centres of bulb of diameter du, of a multi under reamed piles, is
A. du
B. 1.25 du
C. 1.5 du
D. 1.75 du
Answer : C

40. Cast iron piles
A. Are suitable for works under sea water
B. Resist shocks or vibrations
C. Are suitable for use as batter piles
D. Are useful for heavy vertical loads
Answer : D

41. In a colar beam roof
A. There is no horizontal tie beam
B. There is a horizontal tie at the feet of rafters only
C. There is a horizontal tie at almost the middle of rafters only
D. There are two horizontal ties, one at the feet and other at the middle of the rafters
Answer : C

42. The width of the hollow space between two walls of a cavity wall should not exceed
A. 5 cm
B. 7.5 cm
C. 10 cm
D. 15 cm
Answer : C

43. Pick up the correct statements from the following:
A. Cracks appear on the plastered surface in the form of hair cracks
B. In brick work, the efflorescence is removed by applying a solution of zinc sulphate and water
C. Excessive thermal variations in the backing or plaster causes the plaster to fall
D. All the above
Answer : D

44. Best type of piles for soft soil having little resistance to the flow of concrete, is
A. Simplex pile
B. Vibro pile
C. Raymond pile
D. Franki pile
Answer : B

45. If height of the first storey of a building is 3.2 m and riser is 13 cm, the number of treads required, is
A. 12
B. 18
C. 24
D. 25
Answer : C

46. For effective drainage, the finished surface of flat roof should have a minimum slope of
A. 1 in 20
B. 1 to 50
C. 1 in 10
D. 1 in 5
Answer : A

47. The lower half portion between crown and skew back of the arch, is called
A. Spandril
B. Haunch
C. Springing
D. Soffit
Answer : B

48. Rotary drilling
A. Is not suitable for deposits containing very coarse gravel
B. Hinders the ground water observations and permeability test
C. Is not economical for holes of less than 10 cm
D. All the above
Answer : D

49. The sound which continues even after its source is cut off, is called
A. Reverberation
B. Echo
C. Intensity of sound
D. Interference
Answer : A

50. Pile foundations are suitable for
A. Water logged soils
B. Soft rocks
C. Compact soils
D. Multi-storeyed buildings
Answer : A