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  • Answer

    The difference between DSTV and STIRNPL is that DSTV compares existing internal forces with allowable values from the DSTV ring binder according to DIN EN 1993-1-8 and thus determines the required connection from the typed connections. STIRNPL, however, performs a complete recalculation for the connection according to DIN 18800.

    The connections in STIRNPL can additionally protrude on both sides. Four bolt rows are also possible.

    DSTV not only includes rigid end plates, but also hinged end plate connections and web cleat connections.

    In addition to the rolled sections (I, IPE, HE-A, HE-B, HE-M), any single-symmetric I-sections can be designed with axial force in STIRNPL (IS and IU sections). In contrast, the DSTV Guidelines only contain values for the common rolled sections (IPE, HE-A, HE-B, HE-M). Additionally, the values calculated there are only allowable for bending with lateral force; the normal force is not taken into account in the DSTV Guidelines.

    To design, for example, end plates on HD sections, you can use STIRNPL while replacing the HD section with an IS section. You can define the dimensions of the HD cross-section for this profile, which then has the same stiffnesses and can be verified in STIRNPL.

  • Answer

    This message appears if the guidelines are not met for the dimensioned end plate.

    Primarily, the recommendations for the layout of welds are supposed to be a design aid, so they are no binding requirement.

    Welds can be carried out even bigger if adequate methods are applied.

    But if you want to keep the limits, go to the input window 1.2 and select the option for entering the end plate thickness dp. If you enter the dimensioned thickness there, you can see the limits according to DIN in the results table for the weld design.

    Now, if you select a value for the web weld that lies within these limits and you restart the calculation, no error log will occur.

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The generated wind loads acting on these objects can be imported to RFEM or RSTAB.

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