# Introduction of Beam and Their Bending Moment

Beams are the long, horizontal supports that you see in everything from houses to bridges. They carry loads (weight) by resisting bending. The amount of bending a beam can take before it snaps is called its bending moment.

## Types of Beam and Their Bending Moment

• There are many types of beams, which can be classified according to how they are supported or according to their cross-sectional shape
• The most common type of beam is the cantilever, which is supported at only one end
• A cantilever beam has a bending moment at its support
• Other common types of beams include simply supported beams, which are supported at both ends; beam Resulting from Principal Stress, which is supported in the middle; and Fixed-End beams, which are supported at both ends but have one end that is prevented from moving.

The amount of bending moment in a beam depends on the type of beam and the loads that are applied to it

• Cantilever beams tend to have the largest bending moments, while simply supported beams have the smallest
• Beam Resulting from Principal Stress usually have bending moments that fall somewhere in between these two extremes
• Fixed-End beams typically have the same bending moment at both ends.

## Types of Beam According to Support Condition

• There are three types of beam according to the support conditions.

1

• Simply Supported Beam: A beam that has two points of contact with the support is known as a simply supported beam
• It is the most basic type of beam.

2

• cantilever Beam: A beam that has only one point of contact with the support is known as a cantilever beam
• It is often used in chimneys and bridges.

3

• Suspended beam: A beam that has no points of contact with the support is known as a suspended beam
• It is often used in cranes and lifts.

## Types of Beam According to Function and Position

• Beams are one of the basic components of a structure
• They are used to support loads over a span, and their main function is to transfer loads from one point to another
• Beams are classified according to their function and position.

1

• Support beams: These beams support loads that are applied at the ends of the beam
• The most common type of support beam is the cantilever beam, which is supported at one end and has a load applied at the other end.

2

• Spans: These beams span between supports, and their main function is to transfer loads from one support to another
• The most common type of span beam is the simple beam, which has a uniform load applied along its length.

3

• Trusses: These beams are composed of a series of triangular elements that are used to support loads over long spans
• Trusses are very efficient in transferring loads, and are often used in the construction of bridges and roofs.

4

• Arches: These beams are designed to transfer loads evenly across their span
• Arches are often used in the construction of doorways and windows.

5

• Suspended beams: These beams are supported at each end and have a load applied to the middle of the beam
• The most common type of suspended beam is the cable, which is used to support suspension bridges.

## Types of Beam According to Geometry and Shape

• There are three main types of beams according to geometry and shape: rectangular, circular, and triangular.

Rectangular beams are the most common type of beam

• They are strong and can support a lot of weight.

Circular beams are not as common as rectangular beams, but they are often used in bridges and other structures where a lot of weight needs to be supported.

Triangular beams are the least common type of beam

• They are mostly used in trusses and other structures where two or more beams come together.

## Conclusion

The beam is one of the most important structures in engineering. Its main purpose is to support loads and transferring their weight to other structures. Beams are classified according to their shapes, and they can be either straight or curved. The most common type of beam is the cantilever beam, which is supported at only one end. The other type of beam is the simply supported beam, which is supported at both ends. Beams are also classified according to their material, and they can be either steel or concrete beams. The steel beams are the most common type of beam used in construction.