A true spiral stair generally will have a central column that the structure radiates from, whereas a helical shape is free form and typically has a balustrade to both sides. Spiral is still the common term to this style of staircase. Often used as a space saving alternative, a helical or spiral stair design will require detailed design in reference to the NCC to ensure compliance. In a commercial environment, especially in relation to the Australian Standard for Accessibility, the smallest diameter for a spiral stair is approximately 4 metres overall. There is no maximum diameter for a helical or spiral stair though this will be governed by other constraints governing widths and clearances.
A double helix is when there are 2 helical stairs servicing the same zones and are intertwined over one another, such as in the UTS Central staircase.
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Get in touch with the experts at Active Metal to discuss your next project. We have offices in major cities across Australia including Melbourne, Sydney and Brisbane. Look to us for impressive stair designs that you will love.
What are the benefits of spiral stairs?
Spiral stairs are a great option if you’re looking to both minimise the stair footprint and create an amazing sculptural staircase. Depending on the diameter of the spiral stair, it may take up less floor area than a conventional stair design or it may suit the layout of the floor design better. Spiral stairs however are always a head turner and an architectural feature that will create an impressive focal point in your fit-out or new building.
Where can spiral stairs be installed?
You can install spiral stairs in any building that has enough space and is able to support the load. Especially if a stair expert can design the staircase as a modular build, there will be no restriction on access even if the stair is high up in a multi-storey building. Remember that you will need to meet all relevant building codes if you’re thinking about having a spiral staircase designed and installed, so always speak to an expert first.
What materials can spiral staircases be made from?
Our stair design specialists will use a range of different materials to create a spiral staircase. Based on your needs and style preferences, they may incorporate a combination of timber, steel and glass. A very popular choice is for an integrated steel plate balustrade to form both the balustrade and the stringer. Keep in mind that you can always speak to the expert team at Active Metal to discuss a custom build that takes into account your specific requirements.