Overhang
Definition:
Overhang is a term used in architecture and engineering to describe a structure that extends beyond the supporting wall or column. It is a projection or extension from a surface or edge that extends beyond the supporting structure.
Examples:
- A balcony is an overhang structure that extends beyond the wall of a building.
- A window bay is an overhang structure that extends beyond the wall of a building.
- A cantilever beam is an overhang structure that extends beyond its support point.
Types of Overhang:
- Simple overhang: A structure that extends evenly from a single point or line of support.
- Multiple overhang: A structure that extends from more than one point or line of support.
- Continuous overhang: A structure that extends continuously over a long distance.
- Supported overhang: An overhang that is supported by a separate structure.
Structural Considerations:
Overhangs are subject to additional forces, such as wind load, gravity, and shear force. These forces can be calculated using engineering principles. To ensure structural integrity, overhangs must be designed with sufficient strength and stiffness to withstand these forces.
Architectural Considerations:
Overhangs can be used to create visual interest, shade, and privacy. They can also be used to extend living space or create outdoor areas. However, overhangs can also create wind resistance and heat gain, so it is important to consider these factors when designing.
Examples of Overhangs in Architecture:
- Balconies and terraces
- Window bays
- Projouts
- Cornices
- Overhanging roofs
Conclusion:
Overhangs are a common architectural and engineering element that can add visual appeal, functionality, and structural complexity to a structure. It is important to consider the structural and architectural factors when designing overhangs to ensure their safety and effectiveness.
