| 摘要 |
A truss 10 comprises two chords 12, 14, a web 20 positioned between one end of the chords and extending towards the centre of the cords, and a connector 40, 42 to join the web 20 to the chords 12, 14 at a position away from the end. The truss 10 can be shortened. A strut 16 may be positioned at the inside end of the web 20 between the chords 12, 14. Preferably two connector plates 40, 42 each overlap a chord, and part of the web 20 and strut 16. The plates may have punched teeth and are preferably located only on one side of the truss 10. The web 20 may be flush with the sides of the chords 12, 14 forming a C-shaped truss. Alternatively the web 20 may be positioned centrally forming an Ishaped truss. The truss can be assembled without glue by pressing, so that the teeth of the connector plates 40, 42 penetrate the wood.
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