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  • Users: bluestar9k
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  1. bluestar9k

    DESIGN: Need to Reinforce Interior Wall Cap-Plate for Lateral Load

    Shown below is an image of the truss that spans 4 walls. The 2 interior supports were evaluated 2 different ways. Initially the interior supports were set as pinned connections and after running an evaluation of the truss the results indicated that these supports produced horizontal forces of...
  2. bluestar9k

    What type of Truss support connection should be considered in calculations?

    The truss shown below sets on top of a 2”x4”x8’ wall with studs 16” OC; so the bottom chord is around 15’ off the ground and the truss supports are 8’ off the ground. The truss shown is one of a series of trusses set on 24” centers. The bearing wall is freestanding for 14’. Thus there are 7...
  3. bluestar9k

    How to determine moment stresses in plywood cross section.

    Problem: Remove a 2”x4” Beam and replace with plywood. Shown below is a section of truss I have been working on. The problem is the spacing between the top and bottom chords is too small for a diagonal member. So I have elected to replace the diagonal member with plywood. I have the axial...
  4. bluestar9k

    Sign Convention of shear on a Vertical Beam.

    With respect to a truss there are vertical members, horizontal members and diagonal members. I understand the “shear displacement” for the diagonal and horizontal members; but, can not resolve the shear displacement for a vertical member. Specifically, which end is considered the “left side” for...
  5. bluestar9k

    Truss - Inconsistent Member Loads

    When cross checking my work between Method of Joints and Sections I found the 2 methods produced different results for the same truss member. An image of the truss I am designing is attached. I used an arbitrary reaction force of 529# at Nodes A & G. Using Method of Joints the computed force...

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