Civil Engineering Q&A - 5

Here are the next set of Basic Civil Engineering Questions and Answers - 5 .

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• In PERT analysis, the time estimates of activities and probability of their occurrence follow
  • beta distribution
  • gamma distribution
  • normal distribution
  • Poisson’s distribution
  Answer — beta distribution
  
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• A sewer of 400mm diameter and slope 1 in 400,running half-full, has a flow velocity of 0.82m/sec. What velocity of flow will be obtained if the slope is made 1 in 100?
  • 3.28m/s
  • 1.64 m/s
  • 0.82m/s
  • 0.41m/s
  Answer — 1.64 m/s
• A simply supported beam is considered as a deep beam if the ratio of effective span to overall depth is less than
  • 1
  • 2
  • 3
  • 4
  Answer — 2
  
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  • The minimum grade of reinforced concrete in seawater as per IS 456-2000 is
    • M 15
    • M 20
    • M 30
    • M 40
    Answer — M 30
    
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    • Torsion reinforcement provided at the corners of a two-way slab
      • distributes bending moment uniformly
      • prevents corners from lifting
      • controls cracking at corners
      • does not allow any twist at corners
      Answer — controls cracking at corners
      
      • A concrete beam of rectangular cross-section of 200 mm x 400 mm is pre stressed with a force of 400kN at an eccentricity of 100 mm. The maximum compressive stress in the concrete is
        • 12.5N/mm2
        • 7.5 N/mm2
        • 5.0 N/mm2
        • 2.5 N/mm2
        
        
        Answer — 12.5N/mm2
        
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        ~ Ready Mix Concrete ~ ( RMC)