Timber Design Society 2022 Series

Timber Design Society 2022 | 1
Carbon Evaluations for Timber Buildings in New Zealand Using Available Resources
Presented by David Carradine, 24th February 2022

Timber buildings have been gaining popularity around the world and in New Zealand as methods for designing, constructing and manufacturing in timber make huge advances and increase the options available for building in wood.  This is partly due to the efficiency of timber as a building material and the wide array of structural forms it can provide.  The gain in the popularity of timber for larger multi-storey buildings is also due to the significant amount of embodied carbon that wood sequesters, which can result in lower greenhouse gas emissions for timber buildings.

This presentation will present and discuss some available LCA tools and calculators in New Zealand and explain some of the differences among them along with examples of their use.


Timber Design Society 2022 | 2
Predicting brittle failures in timber connections to avoid them

Presented by Pierre Quenneville, 24th March 2022

Timber connections are a critical part of the structural solution. Whether they are designed to resist occupancy, wind or earthquake loadings, their failure behaviour needs to be controlled. Although legally one can opt for a brittle resistance controlling in non-seismic situations, it is preferable to have the added safety of a ductile failure. However, to be able to avoid brittle failures, one needs to be able to reliably predict them. The current connections design equations of NZS 3603 do not offer this possibility. The upcoming version of the New Zealand timber design standard will allow designers to determine the ductile and brittle failure resistances separately and allow the designers to dictate the governing resistance and by what margin.

The webinar will introduce the different brittle failures, their resulting load-displacement characteristics, what triggers them and how to detail connections to avoid them. The upcoming design equations philosophy will be presented and examples of joints design shown.


Timber Design Society 2022 | 3
Mass timber: Oppotunities, constraints and consequences from a product development

Presented by Daiman Otto, April 21 2022

Mass timber construction demand is growing globally, and for good reason. It has serious benefits & some serious constraints – but it’s time is now. For the successful implementation of MT construction at scale, we have to understand MT in the context of the overall building system and balance the expected & sometimes unexpected trade-offs that result. A product developers role is to understand all aspects of the system in order to find the best application, create value & deliver certainty to the client. This presentation outlines some of these strategies & practices including supply chain integration & evaluation, DfMA & circularity


Timber Design Society 2022 | 4
Lessons and successes from a five storey hybrid timber building – Te Ara o Puanga apartment building (Mary Potter building)

Presented by Emma O’Neill, May 26 2022

The presentation covers the success storey of the design, pre-fabrication and installation of the five storey Te Ara o Puanga Apartment Building (Mary Potter Apartment) in Wellington. Dealing with a challenging building site, strict noise requirements, and a complicated structure, the design of Te Ara o Puanga is a great example of the complexities and benefits of prefabrication. The hybrid light timber framing, glulam, and LVL structure provided a fast, quiet, and cost-effective solution to accommodate the architectural intent and to overcome difficult site conditions and vibration, fire and acoustic performance requirements. Based on the smooth assembly on site and a few lessons learnt during design and construction, this building is already an example for other designs currently underway.


Timber Design Society 2022 | 5
Unlocking the true values of mass timber through quality information

Presented by Barry Lynch and Eoin McLoughlin, June 23 2022

Why do Mass Timber projects fail to get off the ground? In our experience its due to lack of quality cost, time and added benefit data. The decision to design in mass timber is made at feasibility stage when the information level is at its lowest. Information that lacks quality, kills mass timber projects. A different approach is needed.

In this presentation Barry and Eoin will show you how you can gain quality information at the earliest stage of design. Optimised decision making based on accurate data will lead to more mass timber projects in New Zealand and further afield.


Timber Design Society 2022 | 6
Essentials of DfMA and engineering in mass timber design

Presented by Adam Jones, July 21 2022

On this topic an Adam Jones, Technical Manager for XLam presented on:

  • Recent global case studies in mass timber
  • Designing for efficiencies in manufacture and assembly
  • Designing for tolerances
  • Designing to the constraints of the supply chain
  • Keys to project success

Timber Design Society 2022 | 7
MiTek lateral solutions for multi-storey timber buildings

Presented by Daniel Wellington, August 25 2022

In this presentation, we will look at the fundamentals behind MiTek’s Z4 system and take a deep dive into the common issues engineers face when specifying continuous rod systems. We will also look at a couple of worked examples to further reinforce the simplicity of the Z4 system and its straightforward integration into your timber structures.