Case Study

Tauranga City Council office building

  • Project working name
    90 Devonport Road
  • Location
    Tauranga, Bay of Plenty
  • Client
    Tauranga City Council / Willis Bond
  • Architect
    Warren and Mahoney
  • Structural Engineer
    Dunning Thornton Consultants
  • Builder
    LT McGuinness
  • Date
    2025
  • Photo Credits
    Techlam / Willis Bond

Leading the way with glulam

Our Challenge
The 90 Devonport Road project set out to construct New Zealand's largest mass timber office building, aiming for a 6 Green Star design accreditation. This ambitious hybrid steel and timber structure required materials and construction methods that would significantly reduce its carbon footprint. A key challenge involved ensuring precise integration and efficient assembly of diverse mass timber elements, including laminated veneer lumber (LVL), cross laminated timber (CLT) and Glulaminated timber (Glulam).

The Techlam Solution
Techlam played a central role in the early contractor involvement process, leading collaborative discussions with Willis Bond, the design team (Warren and Mahoney, Dunning Thornton Consultants, Beca) and many key subcontractors, such as Red Stag and Nelson Pine. Techlam's advanced 3D modelling capabilities helped to provide clear visual communication, making sure all parties understood the integration and assembly sequence of the building elements. This proactive approach facilitated early clash detection and improving overall coordination.

Techlam supplied the 600x600 exterior structural glulam columns, a key highlight of the project's mass timber construction. These prefabricated glulam elements were delivered with great precision, contributing to the project’s speed, efficiency and safety on site. This manufacturing and assembly method minimised on-site work and labour requirements compared to traditional construction. The glulam columns provided a premium structural solution with high dimensional stability and visual appeal, and also contributing to the building’s overall reduced carbon footprint.

Products Used
01

Glulaminated Visual Appearance Grades

Used for the building's 600mm x 600mm exterior structural columns, chosen for their high dimensional stability, visual appeal and contribution to the building's low carbon footprint.

02

Pre-fabrication

Manufactured at plant and delivered ready-to-assemble glulam components with connections supplied, ensuring precise fit, rapid on-site installation and construction efficiency and safety.

Edward (Eddie) Chambers

MEng (Hons), CPEng, CMEngNZ

LT McGuinness

“Glulam is excellent for external applications and offers significant visual appeal. The teamwork and team environment were awesome - they really brought everyone to the same level. I was impressed with Techlam in that regard.”

“Techlam was truly at the forefront with their skillset. They brought the design team - including Warren and Mahoney, Dunning Thornton Consultants, and Beca - along with subcontractors like Red Stag and Nelson Pine, together. We all looked at the model, and it was important for everyone to agree. Techlam's advanced ability to pull up 3D images meant that everyone could easily understand the elements, including how and when components like LVL, CLT and Glulam would be assembled. The quality of that communication is incredibly important in major and complex projects such as 90 Devonport Road. Techlam demonstrated they possessed that skill. It created a knowledge and data-sharing environment, allowing for earlier clash detection, which was fully achieved at Devonport Road. Techlam is absolutely capable of leading these kinds of meetings. The teamwork and team environment were awesome - they really brought everyone to the same level. I was impressed with Techlam in that regard."

“The precision of Techlam's glulam elements enabled us to move towards manufacture and assembly, rather than manufacturing on site. As long as there's good collaboration and materials arrive on time, this method is extremely efficient compared to in-situ construction. An added benefit is that it can reduce the carbon footprint, sometimes by half, compared to more “traditional” materials such as steel and concrete. As a builder, the biggest advantages of mass timber prefabrication are speed, efficiency and safety. Larger mass timber elements can be installed in one piece with fewer people, meaning less risk because you require fewer people on site or at heights. It's much tidier, cleaner and quieter than, say, building a large concrete wall with scaffolding and people working at height. Timber elements simply arrive, and you crane and fix them into place.”

"Glulam is truly a premium product, especially well-suited for columns and beams. It's excellent for external applications and offers significant visual appeal. I anticipate seeing more glulam in the future, but that's something the quantity surveyor would ultimately weigh up. Among high-tech mass timber products, glulam stands out as the premium choice.”

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