| 摘要 |
The invention discloses a segmented end shape for an elongate, parallel-sided wooden web 10 for a roof truss, suitable for use in the Turb-O-Web method of roof truss construction. The web end is shaped as series of three or more substantially straight facets 26, 28 to approximate a notional part circle, preferably a semicircle 16 having an endpoint coinciding with an endmost point of said web. The end shape comprises an irregular part polygon having an end point coinciding with said endpoint of the notional part circle, and wherein junctions between one or more adjacent facets of said polygon lie outside the notional part circle and a part of one or more facets lie inside the notional part circle.
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