BlockingBy tjs Posted 31/03/2016 InBlocking2016-03-312016-03-31http://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 Short timbers fixed between chords to laterally brace them. They should be at least 70% of the depth of the chords. tjs