Multi-faceted end for roof truss web

An elongate, parallel-sided wooden web for a roof truss, said web having at least one end thereof configured on said web so as to determine in use a joint location between said wooden web and a chord of said roof truss and with an adjacent web of said truss having a similar end, said end being shaped so as to mitigate error accumulation, said at least one end being shaped as series of three or more substantially straight facets to approximate a semicircle having an origin, a radius being substantially one half of a width of said web and an endpoint substantially coincident with an endmost point of said web, wherein said end shape comprises an irregular part polygon having an end point substantially coincident with said endpoint of the semicircle, and wherein junctions between one or more adjacent facets of said polygon lie outside said semicircle substantially on a first semicircular locus concentric with and of greater radius than said semicircle and a part of one or more facets lie inside said semicircle and are substantially tangential to a second semicircular locus concentric with and of lesser radius than said semicircle.