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
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Cantilever Beam
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Overhanging Beam
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Support
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Fixed at one end, free at the other
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Supported at two or more points
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Extension
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Extends beyond the fixed support without any other support
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Extends beyond support(s) on one or both ends
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Load Distribution
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Load is carried entirely by the fixed end
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Load is shared between the supports and the overhanging section
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Design Flexibility
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Used when support is available only on one end
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Offers flexibility when intermediate support is possible
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Common Uses
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Balconies, canopies, and overhangs
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Roof extensions, walkways, and balconies with mid-span support
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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.
