Types of Beams

Different Types of Beams :

Beams are classified into many types based on three main criteria.

  1. Based on Geometry

    1. Straight beam – Beam with straight profile
    2. Curved beam – Beam with curved profile
    3. Tapered beam – Beam with tapered cross section
    4. Based on the shape of cross section
      1. I – Beam – Beam with “I” cross section
      2. T – Beam – Beam with “T” cross section
      3. C – Beam – Beam with “C” Cross section
  2. Based on equilibrium conditions

    1. Statically determinate beam – For a statically determinate beam, equilibrium conditions alone can be used to solve reactions.
    2. Statically indeterminate beam – For a statically indeterminate beam, equilibrium conditions are not enough to solve reactions. Additional deflections are needed to solve reactions.
  3. Based on the type of support

    1. Simply supported beam
    2. Cantilever beam
    3. Overhanging beam
    4. Continuous beam
    5. Fixed beam

Different types of Beams based on the type of support

  1. Simply supported Beam : A type of beam which is supported at both ends  is called as Simply supported beam. It is the one of the simplest structural elements in existence.
  2. Cantilever Beam : A type of beam which is fixed at one end and free at the other end is called as Cantilever Beam.
  3. Fixed Beam : It is a type of beam which is fixed at both ends is called as Fixed beam.
  4. Overhanging Beam : A beam having its end portion extended beyond the support, is known as overhanging beam. A beam may be overhanging on one side or on both sides.
  5. Continuous Beam : A Beam having more than two supports is known as continuous beam.

Questions and Answers

  1. A beam which is fixed at one end and free at the other is called
    Answer : Cantilever Beam
  2. A beam extending beyond the supports is called
    Answer : Overhanging Beam
  3. A beam encastered at both ends is called
    Answer : Fixed Beam
  4. A beam supported on more than two supports is called
    Answer : Continuous beam
  5. A cantilever beam is one which is
    Answer : Fixed at one end and free at the other end
  6. A continuous beam is one which is
    Answer : Supported on more than two supports