)
)
)
)
Structural design of Pomare Train Station
As Pomare in Lower Hutt experiences a surge in medium-density development, the need for safe, modern infrastructure has never been greater. The ageing 1940s-era train station—compromised by piecemeal additions and long-term neglect—was deemed a seismic risk and a CPTED concern. In response, Greater Wellington Regional Council commissioned a full rebuild, and Harrison Grierson was proud to lead the structural engineering design and construction monitoring for the new shelter.
The new 187m² IL2-rated shelter sits on a central platform flanked by tracks on both sides. Our structural engineers designed a semi-sheltered central box that protects seating and stair circulation, with canopies extending to the platform edges. The structure’s primary steel frame, secondary framing, timber screens, and glazing reflect Metlink’s evolving design identity.
Structural design highlights
Moment resisting frames (MRFs): The shelter’s form is built around two-way MRFs using CHS columns—an architectural requirement that demanded precision and creativity
Secondary framing: Custom framing supports architectural screens and glazing, all tied back to the main MRFs for structural integrity
Seismic considerations: The design incorporated dynamic frequency analysis and drift checks using Space Gass modelling, ensuring compliance with seismic performance standards
Construction in a live rail environment
Building on a central platform meant all structural elements had to be delivered via pedestrian subways—no craning over live tracks. This constraint required meticulous planning and coordination, with our team overseeing every phase of construction to ensure safety and efficiency.
Collaboration and certification
Led by our technical director of structures, Allan Robertson, our team worked closely with Slessor Architects, BGIS, and Greater Wellington Regional Council to deliver a structure that balances architectural ambition with engineering rigour. Allan served as the reviewing and certifying structural engineer, ensuring the shelter met all performance and compliance benchmarks.
Talk to our Structural Team today to learn how Harrison Grierson can help bring your next infrastructure project to life.