Types of Overhanging Beams
The types of overhanging beams vary depending on how the beam is supported and where the overhang occurs:
1. Single Overhanging Beam
2. Double Overhanging Beam
Difference Between Cantilever and Overhanging Beam
To better understand how these two structural elements differ, here's a quick comparison between cantilever and overhanging beams:
Aspect
| Cantilever Beam
| Overhanging Beam
|
Support
| Fixed at one end, free at the other
| Supported at two or more points
|
Extension
| Extends beyond the fixed support without any other support
| Extends beyond support(s) on one or both ends
|
Load Distribution
| Load is carried entirely by the fixed end
| Load is shared between the supports and the overhanging section
|
Design Flexibility
| Used when support is available only on one end
| Offers flexibility when intermediate support is possible
|
Common Uses
| Balconies, canopies, and overhangs
| Roof extensions, walkways, and balconies with mid-span support
|
Factors to Consider While Making an Overhanging Beam
When designing an overhanging beam, it’s important to consider:
1. Load requirements: The overhanging section must support its share of weight safely.
2. Support placement: Proper spacing ensures even stress distribution.
3. Material strength: Strong materials help reduce bending and improve durability.
4. Deflection control: Beams must be designed to minimise sagging over time.
5. Exposure conditions: Outdoor beams should withstand weather and wear.
