Types of Foundation in Construction
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Questions and Answers

Why is reinforced concrete used in the construction of sloped isolated footings?

  • To decrease the load carrying capacity
  • To increase the chances of footing failure
  • To decrease the utilization of concrete and reinforcement (correct)
  • To increase the cost of construction
  • In what type of construction are stepped isolated footings generally used?

  • Industrial buildings
  • Bridges
  • Commercial buildings
  • Residential buildings (correct)
  • What is the primary reason for constructing combined footings instead of isolated footings?

  • When two columns are close together and their foundations overlap (correct)
  • To increase the cost
  • For aesthetic reasons
  • To decrease the load-carrying capacity
  • Which type of footing is provided when one column load is much more than the other?

    <p>Trapezoidal footing</p> Signup and view all the answers

    What determines the shape of a combined footing?

    <p>Centroid of the footing area coinciding with the resultant of the column loads</p> Signup and view all the answers

    Why are trapezoidal footings restricted in terms of projections beyond column faces?

    <p>When one column load is much more than the other</p> Signup and view all the answers

    What is the purpose of isolated footings in construction?

    <p>To transmit and distribute loads of single columns to the soil without exceeding its bearing capacity</p> Signup and view all the answers

    Which type of isolated footing is usually constructed under each column independently?

    <p>Flat isolated footing</p> Signup and view all the answers

    In what situations are isolated footings commonly used?

    <p>When columns are spaced at relatively long distances</p> Signup and view all the answers

    Which characteristic determines the shape of isolated footings?

    <p>Imposed loads and soil condition</p> Signup and view all the answers

    What is the primary function of flat isolated footings?

    <p>To reduce bending moments and shearing forces</p> Signup and view all the answers

    Why are isolated footings considered one of the most economical types of footings?

    <p>Because they require less concrete compared to other types of footings</p> Signup and view all the answers

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