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Sentinel Apartment – Helical Staircase

<p class="font_8">Suspended in the penthouse of Takapuna’s Sentinel tower, this helical staircase is a bold architectural statement — combining sculptural form, structural precision, and refined detailing. Rising within a luxury residence over 100 metres above ground, the stair features a fully self-supporting steel structure with no central column, showcasing the clean geometry of the helix.<br>
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The treads are finished with carpet and steel risers, while integrated LED lighting casts a soft, ambient glow along the ascent. At level 1, the stair is bordered by a custom 8mm steel balustrade, fabricated in a striking pattern of squares and rectangles and powder-coated to harmonise with the interior.<br>
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A concealed fire sprinkler system was seamlessly integrated into the stair void — a technical challenge requiring close collaboration across trades. All components were craned to the top floor and installed with millimetre precision.<br>
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This project reflects the intersection of complex engineering and bespoke design — a sculptural centrepiece in an extraordinary setting.</p>

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