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Laminated sectional girder of fiber-reinforced materials

  • US 4,177,306 A
  • Filed: 05/12/1977
  • Issued: 12/04/1979
  • Est. Priority Date: 05/19/1976
  • Status: Expired due to Term
First Claim
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1. In a longitudinal laminated construction girder consisting of at least one web portion and at least one flange portion, said web and flange portions extending transversely to each other, with each being formed of a plurality of layers, each of said layers consisting essentially of a fiber reinforced structure formed of thermosetting-resin-impregnated fibers, the improvement comprising:

  • that both said web and flange portions are each structured to consist of at least three of said layers;

    that said layers include at least two connecting layers which extend through both said web and flange portions;

    that said connecting layers are constructed with crossing fiber applications which include fibers extending at an angle transversely to the longitudinal direction of said girder; and

    that said at least one flange portion includes at least one flange layer which extends exclusively through said flange portion and is located between said at least two connecting layers extending through said flange portion;

    said at least one flange layer being structured to include unidirectional fiber applications which extend parallel to said longitudinal direction of said girder.

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