| 摘要 |
A wooden I beam comprising upper and lower wooden members each member having an outer longitudinal flange secured by glue at a right angle to at least one elongated web, upper members of the beam being connected at end joints which are staggered relative to end joints between lower members of the beam, the webs of all members being inwardly projecting and connected together by means including mechanical fastening means which secure together the webs and/or web connecting members, with both said fastening means and web connecting members serving to connect said webs without the use of glue. Each lower member has a pair of the webs spaced apart and parallel to each other and which receive between them an upper member web or one of the web connecting members. Ends of the webs may be staggered relative to ends of the flanges.
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