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  1. Figure 01 - Format Conversion Factor, KF, when Designing per the 2018 NDS and LRFD in RF-LAMINATE

    2018 NDS Updates for Cross-Laminated Timber Design

    The American Wood Council (AWC) has released the 2018 Edition of the National Design Specification (NDS) for Wood Construction. This is the second edition of the NDS to contain a chapter dedicated to cross-laminated timber (CLT) design. Therefore, a couple of revisions were included in the 2018 NDS when compared to the previous 2015 Edition.
  2. Figure 01 - External Pressure Coefficients, Cp, for Domed Roofs with a Circular Base (according to Figure 27.3-2 [1])

    Wind Loads on Circular Dome Roof Structures According to ASCE 7-16

    When it comes to wind loads on building type structures per the ASCE 7, numerous resources can be found to supplement design standards and aid engineers with this lateral load application.  However, engineers may find it more difficult to find similar resources for wind loading on non-building type structures.  This article will examine the steps to calculate and apply wind loads per the ASCE 7-16 on a circular reinforced concrete tank with a dome roof.
  3. Figure 01 - Moving Load Library According to AASHTO and AREMA Standards

    Moving Loads According to AASHTO Standard

    Design loads specified in the AASHTO Bridge Design Specification are available in the RF‑MOVE Surfaces moving load library. Design Truck (HS‑20), Tandem, Type 3, and Overload are available options.

  4. Figure 01 - Virtual Joists and Virtual Joist Girders in the Cross-section Database

    SJI Virtual Joists Available

    The Steel Joist Institute (SJI) has previously developed Virtual Joist tables to estimate the section properties for Open Web Steel Joists. These Virtual Joist sections are characterised as equivalent wide-flange beams which closely approximate the joist chord area, effective moment of inertia, and weight. Virtual Joists are also available in the RFEM and RSTAB cross‑section database.

  5. RF-/STEEL AISC Mode Shapes

    RF-/STEEL AISC Mode Shapes

    After running an analysis in RF-/STEEL AISC, the mode shapes for sets of members can be viewed graphically in a separate window. Select the relevant set of members in the result window and click the [Mode Shapes] button.

  6. Local Buckling of Members per the ADM 2015

    Local Buckling of Members per the ADM 2015

    If an aluminium member section is comprised of slender elements, failure can occur due to the local buckling of the flanges or webs before the member can reach full strength. In the add-on module RF-/ALUMINUM ADM, there are now three options for determining the nominal flexural strength for the limit state of local buckling, Mnlb, from section F.3 in the 2015 Aluminum Design Manual. The three options include sections F.3.1 Weighted Average Method, F.3.2 Direct Strength Method, and F.3.3 Limiting Element Method.

  7. RF-/STEEL AISC: Notional Loads to Represent Imperfections

    Notional Loads to Represent Imperfections

    In the AISC 360 – 14th Ed. C2.2, the direct analysis method requires the consideration of initial imperfections to be taken into consideration. The important imperfection of recognition is column out-of-plumbness. According to C2.2a, the direct modeling of imperfections is one method to account for the effect of initial imperfections. However, in many situations, the expected displacements may not be known or easily predicted.

  8. AISC: Direct Analysis Method and Stiffness Reduction

    Direct Analysis Method and Stiffness Reduction

    Requirements for the design of structural stability are given in the AISC 360 – 14th Ed. Chapter C. In particular, the direct analysis method provisions, which was previously located in Appendix 7 of the AISC 360 – 13th Ed., are described in detail. This method is considered an alternative to the effective length method which in turn eliminates the need for effective length (K) factors other than 1.0.

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