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Kai Tak Sports Park — Atelier Designa
Kai Tak Sports Park Hong Kong — 2018–2021 Populous

Envelope geometry
at stadium scale.

A 50,000-seat Main Stadium in Hong Kong's new sports precinct. Envelope and roof geometry development, computational design leadership, and façade coordination across concept through construction documentation.

Kai Tak Sports Park — main stadium envelope
Rationalisation Outcomes

A stronger form.
A leaner envelope.

Design
Builder
Client
− 3 m
Roof lowered
Stronger profile
Lower roofline, better urban presence
Less structure
Shorter columns, reduced wind loads
Lower cost
Simpler structure, easier approvals
− 3,000 m²
Facade saved
Tighter geometry
More efficient envelope per seat
Fewer panels
Programme saving at cladding stage
Direct saving
Material and labour reduction
Fewer types
Panel geometry
Unified surface
Consistent arcs, controlled repetition
Simpler QA
Fewer moulds across 26,897 panels
Lower risk
Reduced fabrication and install errors
Parametric Rationalisation

From 47,000 panels
to 27,000.

By adjusting the parametric model in real time, the team could instantly visualise the impact of every geometric decision — enabling the architecture team to review options live and the client to validate them on the spot. A fast, evidence-based decision process that compressed weeks of back-and-forth into focused review sessions.

47,000
Initial count
→
27,000
Rationalised count
Rationalised − 43% Original
Architecture Team
Builder
Client
Live model
Instant visualisation
Review in the room
Geometry options explored and compared in real time — no redraw cycle between sessions
Fewer RFIs
Design intent resolved early — less ambiguity reaching site and the subcontractor team
Validate on the spot
Decisions made with confidence against live 3D output, not static drawings
− 20,000
Panels removed
Leaner envelope
Surface area and panel count reduced without compromising the design intent
Cost-certain procurement
Panel count locked early — accurate pricing for fabrication, material, and install labour
Direct cost saving
Quantified reduction in scope visible from the start of the rationalisation process
Lower risk
Reduced complexity
Controlled geometry
Fewer unique panel types reduces coordination risk across the facade system
Simpler site logistics
Fewer panel types, fewer moulds — easier sequencing, less waste, lower error rate on site
Programme confidence
Reduced fabrication complexity means a more predictable delivery and install schedule
01 / 12
01 — Full Geometry
Roof geometry defined by structure,
aesthetics and retractable roof fall.
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Kai Tak Sports Park · Facade Rationalisation

From setout
to geometry.

With the roof tangent established, the facade rationalisation moves through constant-diameter and constant-length arcs — tying structural grid, cladding system, and substructure into a single coherent logic.

07 / 12
07 — Strongback · Our Setout
The structural strongback grid
aligned with our facade setout geometry.
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50,000
Seat Capacity
68,000 m²
Total Envelope — 38,000 m² Roof · 30,000 m² Facade
26,897
Facade Panels
2018–21
Project Period

Geometry development
and coordination.

The Kai Tak Sports Park Main Stadium presented one of the most geometrically complex envelope challenges in recent Hong Kong architecture. The elliptical roof form, combined with a retractable panel system, required careful computational development to translate design intent into buildable geometry.

Involvement spanned envelope and roof geometry development, façade system coordination, and computational design leadership from concept through construction documentation — as part of the Populous project team.

Parametric modelling was used to test rationalisation strategies across the double-curvature surfaces, optimise panel layouts for fabrication efficiency, and coordinate interface conditions between the roof structure, façade system, and building services.

Note on Attribution

This project was delivered as part of Brice Pannetier's role while employed at Populous, with Populous acting as the appointed architectural practice. The 3D model and animation shown above were produced independently by Atelier Designa for illustrative purposes. Architectural services provided by Populous.

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