Basic Civil Engineering Q & A - Part 6

Here are the next set of Basic Civil Engineering Questions and Answers - 6 .

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• A column is effectively held in position and restrained in direction at one end but is free at the other end. If the actual length is L.The effective length is
  • 0.67L
  • L
  • 1.5L
  • 2L
  Answer — 2L
  
  
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  • The maximum safe permissible limit of sulphates in domestic water supply is
    • 100 mg/ L
    • 200 mg/ L
    • 500 mg/L
    • 600 mg/ L
    Answer — 200 mg/ L
    
    
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    • In an isolated reinforced concrete column footing of effective depth d,the stress in punching shear is checked
      • at the center of the column
      • at the face of the column
      • at a distance d /2 away from the face of the column
      • at a distance d /2 away from the center of the column
      Answer — at a distance d /2 away from the face of the column
      
      
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      • The additional cover thickness to be provided in reinforced concrete members that are totally immersed in seawater is
        • 25 mm
        • 30 mm
        • 35 mm
        • 40 mm
        Answer — 40mm
        • A simply supported beam has an effective span of 16m. What shall be the limiting ratio of span to effective depth as per IS 456-2000 ?
          • 26
          • 20
          • 12.5
          • 7
          Answer — 12.5
          
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          BLOCK CRACKING IN PAVEMENT