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Seven Deadly Sins of External Timber Design: TS2010

Edgar (Ted) Stubbersfield
Formal CPD
1 Hour - FORMAL
Duration: 00:49:15

With timber again being readily used both for architectural features externally, this talk provides a  platform of knowledge to assist with the specification of external timber, probably one of the most sort after but troublesome materials to use outside. Ted discusses the seven most common areas of concern, especially for landscape usage.

As you will hear from this talk, Ted is a wealth of knowledge on the use of timber in landscaping.


This CPD course relates to the following AACA NCSA Elements: 5, 6, 7 & 8

  • Understand the issues of moisture
  • Appreciate the correct usage of ‘heart in’ timber
  • Be aware of correct joist design and specification
  • Be aware of using ‘sleepers’ in landscaping
  • Understand the issues with using 150 x 150 in landscaping
  • Appreciate the correct methodology for setting hardwood posts
  • Understand the importance of correct ‘durability ratings’ for timber specification

Recognised by the NSW ARB, ARB of Victoria, BA of Qld, AB of WA, Work Stds Tas, APB of SA, PIA, AILA & BDA


    Edgar (Ted) Stubbersfield grew up Gatton, Queensland, Australia.  Ted and his parents before him operated a sawmill, Gatton Sawmilling Company which specialised in high quality hardwoods.  This small country mill won many awards for the quality of its hardwood and its innovative products.  In 1997, Ted started his own business; Outdoor Structures Australia (OSA) with the aim of specialising in weather exposed timber structures such as boardwalks and bridges.  He undertook several formal research projects to allow him to understand and the special requirements of this very difficult application. 

    Now in his semi-retirement, when not delivering CPD sessions, he works as a consultant advising mainly local government on how to maximise service life while minimising maintenance on their bridges and decks.  He is also writing down what he has learnt over a lifetime, so it need not be relearnt.  These new books explains good and bad practice in the area in which they deal and, very importantly, have design checklists so you don’t miss those areas that are likely to impact longevity.