| 摘要 |
Composite purlin of the type comprising two members, a top member and a bottom member, in solid wood which is laminated, adhesively bonded or butted and a core held between the said members, characterised in that the core is formed of a plurality of flat, discontinuous panels 3 assembled in a zigzag pattern in relation to the longitudinal axis of the members 1, 2 at an angle between 2 DEG and 5 DEG in relation to the said longitudinal axis. <IMAGE>
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