Timber Stress GradingBy tjs Posted 31/03/2016 InTimber Stress Grading2016-03-312016-03-31http://www.lincframetrusses.co.uk/wp-content/uploads/2016/04/lincframe_trusses_logo_150.pngLincFrame Trusseshttp://www.lincframetrusses.co.uk/wp-content/uploads/2016/04/lincframe_trusses_logo_150.png200px200px 0 0 The classification of timber into different structural qualities based on strength (see BS 4978: 1988). tjs