Is there a benefit to adding biax cloth, to the laminate of a gluelam style

Discussion in 'Boatbuilding' started by Skua, Nov 21, 2017.

  1. Skua
    Joined: Apr 2013
    Posts: 140
    Likes: 5, Points: 18, Legacy Rep: 73
    Location: Hunt's Pier WW NJ

    Skua Senior Member

    beam that will reinforce a weight bearing deck. There are to be 5 beams total, 8ft long, 1.5 in wide and made up up 6, 1/4 in thick strips, spaced 15 inches apart to support the flybridge deck. would adding a 0/90 biax , or 0 uni, intralayer, add any strength to the beam? Epoxy will be used for the lamination, and in turn the beams will be laminated to the underside, laid into a bed of epoxy and 1700 45/45 biax, and tabbed over with the same, 2 layers at 6 in and 4 inch tabs.

    Currently strips are wetted out and clamped to a form, cut to the curve required. when dry they will then be glued up, using the form and clamps to hold them until set.

    IMG_20171119_221031.jpg
     
  2. PAR
    Joined: Nov 2003
    Posts: 18,654
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    Location: Eustis, FL

    PAR Yacht Designer/Builder

    A layer or two of fabric will not add any serious amount of strength or stiffness to a laminate like this. The wood stack will be pretty stiff as you've described. Some unidi, top and bottom can help, but you'll need more than a layer or two to offer much more than a waterproof sheathing.
     
    Last edited: Nov 21, 2017
  3. Skua
    Joined: Apr 2013
    Posts: 140
    Likes: 5, Points: 18, Legacy Rep: 73
    Location: Hunt's Pier WW NJ

    Skua Senior Member

    Thank you! As always you are most helpful. Happy Holidays.
     
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