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