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.  They have all chosen not to challenge it but simply to stay silent.  Considering their state-of-the-art (below) that belongs to the pre-computer age, their silence 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