A balcony canopy suspension construction is a structural system in which a balcony or canopy is not supported by columns or brackets, but is suspended from steel tie rods or cables anchored into the structure above.
Function and application
In a conventional balcony or canopy, loads are transferred downward through columns or brackets. In a suspension construction, the principle works in reverse: loads are carried upward through tie rods or cables and transferred to an overhead structure, such as a steel beam or a concrete roof edge.
This system is used when columns are undesirable — for example at entrances that require a clear passage, or in architectural designs that aim for a floating effect.
Structural behaviour
The tie rods or cables work exclusively in tension. They are anchored at the top into a structure that is strong enough to absorb the vertical and horizontal forces. The balcony or canopy slab effectively hangs from these rods.
Key considerations in the design:
- The overhead structure must be able to absorb the upward reaction forces.
- The tie rods must be sized for the total load, including wind and snow loads.
- The connections (anchor plates, bolts, weld points) are critical details that must be carefully dimensioned.
- Thermal expansion of the steel components must be taken into account in the design.
Advantages
- No columns required at ground level, saving space and maintaining clear passage.
- Slender, elegant appearance.
- Flexible layout of the space beneath the balcony or canopy.
Related terms
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