Types of Beams

Table of Contents

Different Types of Beams [1] 

Diagram of several different types of beams.

Types of Supported Beams

Simply Supported Beams

  • A simply supported beam is a straight beam with supports on each end which resist vertical and horizontal loads.
  • This beam's maximum deflection point under a uniform load is in the middle of the beam between the two supports.

Sketch of a Simply Supported Beam [1]

Simply Supported Beam [2]

Sketch of a simply supported beam.

Image of a simply supported beam.

Cantilever Beams

  • A cantilever beam is a straight beam where one end is fixed and the other end is free hanging.
  • This beam is supported solely by the fixed end of the beam.
  • The beam's maximum deflection point under a uniform load is at the free end of the beam.

Sketch of a Cantilever Beam [1]

Cantilever Beam [3]

Sketch of a cantilever beam.

Image of a cantilever beam.

Overhanging Beams

  • An overhanging beam is a simply supported beam that has an extra part of the beam overhanging on the outside of the supports of the beam.

Sketch of an Overhanging Beams [1]

Overhanging Beam [4]

Diagram of an overhanging beam.

Image of an overhanging beam.

Continuous Beams

  • A continuous beam is a beam with more than two supports.

Sketch of a Continuous Beam [1]

Continuous Beam [5]

Sketch of a continuous beam.

Image of a continuous beam.

Fixed End Beams

  • A fixed end beam is a beam that is fixed at each end
  • The beam's maximum deflection point under a uniform load is in the middle of the beam between the fixed ends.

Cantilever, Simply Supported Beam

  • A cantilever, simply supported beam is a beam which has one fixed end and one simply supported end.
  • The beam's maximum deflection point under a uniform load is in the middle of the beam between each end.

Types of Common Beams

I-Beam

  • An I-beam is a beam with a cross-section that is composed of two load-bearing flanges that are separated by a web.

I-Beam [6]

Diagram of an I-beam.

Straight Beam

  • Straight beams are beams with a straight profile.
  • Most common beam seen.

Straight Beam [7]

Diagram of a straight beam.


Tapered Beam

  • A tapered beam is one that this wider/thicker at one end of the beam than the other.

Tapered Beam [7]

Diagram of a tapered beam.

Curved Beam

  • Curved beams are beams with curved profiles.

Curved Beam [7]

Image of a curved beam.


Girder

  • Girders are the main horizontal support of a structure.
  • They support smaller beams.
  • They often utilize a I-beam cross-section.

Girder [7]

Diagram of a girder.

References 

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