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  • 1.  Connection Design Force

    Posted 01-29-2018 01:15 PM
    Edited by Arash Yarahmadi 01-30-2018 04:09 AM

  • 2.  RE: Connection Design Force

    Posted 01-30-2018 09:52 AM
    Edited by Tirza Austin 01-30-2018 09:52 AM
    The design force will depend on the behavior of strut. From analysis, extract the value of stress whether compression or tension. Design for that force. Generally, I think the wood strut is provided to resist compression as tension capacity is low. So I believe member should be designed according to analysis for compression and check in tension.

  • 3.  RE: Connection Design Force

    Posted 01-31-2018 09:28 AM

    Normally, the compression and tension are different even through the dynamic analysis is used for some load cases. For example, the dead loads are always there. Both tension and compression shall be checked.



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  • 4.  RE: Connection Design Force

    Posted 02-12-2018 10:00 AM
    Edited by Tirza Austin 02-12-2018 09:59 AM
    The above stated statement will vary as per design being considered with respect to the load acting according to standard codes.

    Adlin Antony C.Eng, S.M.ASCE

  • 5.  RE: Connection Design Force

    Posted 02-13-2018 09:49 AM
    In my opinion, you need to design the members and all connection for all of the possible failure modes. If the connection can be subject to both tension and compression loads, then you need to design for both.

    Andrew Holmes P.E., L.S., M.ASCE
    Consulting Engineer
    Melbourne FL

  • 6.  RE: Connection Design Force

    Posted 02-15-2018 10:14 AM
    Edited by Tirza Austin 02-15-2018 10:14 AM
    The axial forces at connections are transmitted in the form of end bearing, shear, and bending.
    The maximum tensile force should be taken to determine the rupture strength or weaker rupture plane.
    The maximum axial force (either tension or compression) should be considered for determining the sizes required for shear, bearing and bending (such as the thickness of plates and bolt diameters).

    Dr. Muhammad Umair Saleem
    C.Eng, M.ASCE, P.Eng
    Assistant Professor
    King Faisal University
    Hofuf Alahsa

  • 7.  RE: Connection Design Force

    Posted 01-30-2018 01:20 PM
    If the forces are equal, I think you would want to design the connection in tension since the end distance requirements for a fastener loaded toward the member end needs to be larger for full design strength.  See 2018 NDS Table 12.5.1A (http://awc.org/pdf/codes-standards/publications/nds/AWC-NDS2018-ViewOnly-171117.pdf
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    Bradford Douglas P.E., M.ASCE
    AWC Vice President, Engineering
    Leesburg VA