Interview Questions for Civil Engineering (Part-01)

 

Interview Questions for Civil Engineering (Part-01)

1. What are the steps involved in Building Construction?
   Ans: Concreting, Masonry work, Plastering work, Flooring work, Formwork, Steel cutting & bending.
2. How do you measure the volume of concrete?
   Ans: Length × Width × Thickness.
3. Why Concrete Cover is provided for reinforcement?
   Ans: To protect from corrosion and fire.
4. How to check level on construction site?
   Ans: Spirit level, Dumpy level, Leveling pipe.
5. Accuracy of dumpy level?
   Ans: 5 mm.
6. Weight of 12m long 10mm steel?
   Ans: 7.2 kg.
7. Formula for unit weight of steel?
   Ans: (D² / 162)
8. Size of concrete cube?
   Ans: 15×15×15 cm.
9. If cube fails at 28 days?
   Ans: Conduct core cutter test.
10. Mix ratio of M20?
    Ans: 1:1.5:3
11. Unit weight of 12mm steel?
    Ans: 0.89 kg/m
12. Density of steel?
    Ans: 7850 kg/m³
13. Fe-415 indicates?
    Ans: Tensile strength.
14. Volume of 50kg cement bag?
    Ans: 0.035 m³
15. Stair width (residential)?
    Ans: 900 mm
16. Max stair slope?
    Ans: 40°
17. Min column steel diameter?
    Ans: 12 mm
18. Standard brick size?
    Ans: 19×9×9 cm
19. Unit weight of RCC?
    Ans: 2500 kg/m³
20. 1 Acre = ?
    Ans: 43560 sq ft

21. UTM full form → Universal Testing Machine
22. Cement expiry → 3 months
23. 1 sq meter → 10.76 sq ft
24. Unit weight of 25mm steel → 3.85 kg/m
25. 1 hectare → 2.47 acres
26. 1 gallon → 3.78 liters
27. 1 kN → 101.97 kg
28. 1 tonne → 1000 kg
29. Max free fall of concrete → 1.5 m
30. Level instrument → Dumpy level
31. Min bars in circular column → 6
32. AAC → Autoclaved Aerated Concrete
33. NDT → Non-Destructive Test
34. JCB → Joseph Cyril Bamford
35. Soil bearing test → Plate load test
36. Ring & ball test → Bitumen
37. Min hook length → 75 mm
38. Extra length bent bar → 0.45
39. Dumpy least count → 5 mm
40. EGL → Existing Ground Level
41. Brick water absorption → 20%
42. Bricks in 1 m³ → 500
43. Cement consistency → 25%
44. Expansion test → Soundness
45. Concrete strength time → 28 days
46. Cement volume → 0.035 m³
47. Min RCC grade → M20
48. Cement expiry → 3 months
49. DPR → Detailed Project Report
50. Setting time → Initial <30 min, Final 600 min

51. Construction manager duties: Supervision, cost estimation, material purchase, proposals, scheduling.
52. Construction risks: Falls, scaffold failure, electric shock, motion injuries.
53. Hybrid foundation: Combination of mat + piles.
54. Demolition methods: Hydro, dismantling, pressure bursting.
55. Floating slab: Hollow mat foundation.
56. Flashing: Water protection joint.
57. Roof types: Slate, wood, metal.
58. Construction inspections: Site, foundation, framing, insulation, final.
59. Post-construction inspection: Drainage, safety, buildings.
60. Alternate bid: Adjustment to base bid.
61. Change order: Contract modification.
62. Construction cost includes: Material, labor, equipment, profit.
63. CPM: Project scheduling method.
64. Demising wall: Boundary wall.
65. Progress payment: Payment in stages.
66. Structural frame: Beam + column system.
67. Release of lien: Legal release document.
68. Architect contract: Legal agreement.
69. 1/8 scale: 1/8 inch = 1 foot.
70. Architect software: AutoCAD, 3DS Max, SketchUp, etc.
71. Architect skills: Design, software, engineering, business.
72. Pre-project factors: Permissions, materials, environment.
73. CAD tools: Dimensions tools.
74. Engineering apps: Sketchbook, AutoCAD WS, Dropbox.
75. Wood shingles: Roofing material.
76. Architect problems: Budget, space, unclear client needs.
77. Roof height: 1–2 stories.
78. Roof types: Mansard, gambrel, etc.
79. Cantilever issues: Deflection, damage, instability.
80. Built-in balcony: Supported structure.

81. Built vs super built-up → extra amenities included
82. Living room sizes → small to large ranges
83. M25 → 25 MPa strength
84. Max concrete temp → 32°C
85. Grouting → cement-sand repair method
86. Bitumen for cracks → plastic bitumen
87. BM & SF → bending & shear forces
88. Bitumen → plastic
89. Wall top cover → coping
90. Earth retaining wall → retaining wall
91. Curing → 7–10 days
92. Fine aggregate sample → 300 g
93. CBR soaking → 96 hrs
94. Bearing capacity → load capacity of soil
95. Honeycomb → air voids
96.             Cement tests → color, smoothness, float
97.             Cement types → OPC, PPC, etc.
98.             Water-cement ratio → affects strength
99.             Concreting steps → batching → curing
100. Bursting reinforcement → tensile stress

121.             Railway embankment width → 6.1 m
122. Engine direction → turntable
123. Rail stop → buffer stop
124. Moment of inertia → resistance to rotation
125. Heel clearance → switch gap
126. Brick tests → absorption, strength
127. Flange way clearance → rail gap
128. Void ratio → void/solid
129. Stock rails → tongue clearance
130. Switching angle → rail angle
131. CPM → project planning
132. Cement SG → not practical
133. Switch throw → rail distance
134. Max throw → 995 mm
135. Crossing number → 12
136. Warning signal → outer signal
137. Building steps → same as Q1
138. Concrete volume → L×W×H
139. Concrete cover → protection
140. Level checking → tools
141. Dumpy accuracy → 5 mm
142. Steel weight → 7.2 kg
143. Steel formula → D²/162
144. Cube size → 15 cm
145. Cube fail → core test
146. M20 ratio → 1:1.5:3
147. Steel weight → 0.89 kg/m
148. Floating slab → mat foundation
149. Steel density → 7850 kg/m³
150. Fe415 → tensile strength
151. Curb → separator, height = 100 mm

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