These are the carpentry techniques for SDT jointing used by the world’s experts.  They render impossible any meaningful engineering analysis:


All of the following expert entities are aware of the LPSA technology.  None of them has been able to challenge it, so they simply ignore it.  Their own carpentry solutions (below) are devoid of any engineering analysis element.  Therefore, their attitude is understandable but NOT excusable.


1.  A European-funded consortium from: Austria, Finland, France, the Netherlands and UK.  Their final report (1999) is at:

2.  The Forest Products Laboratory, USA.  See:

3.  TRADA, UK (Timber R&D Association):$FILE/crwoodproducts27.pdf