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  1. Figure 01 - Gas Behaviour in Gas Solid

    Ideal Gas in Structural Analysis

    In theory, an ideal gas consists of freely moving mass particles without extension in a volume space. In this space, each particle moves at a speed in one direction. The collision of one particle with another particle or the volume limitations lead to a deflection and a change in the speed of the particles.

  2. Figure 01 - RFEM Model of Residential Building with Prestressed Concrete Ceiling

    Prestressed Concrete Design in RFEM

    Efficient design of prestressed structural components requires a few additional steps that go beyond the standard reinforced concrete design, from modelling tendons, to the calculation of equivalent loads, to the cross-section resistance design. Therefore, it is important that the software for prestressed concrete design is structured and the navigation is possible in the program. RFEM with two add-on modules RF-TENDON and RF-TENDON Design fulfils these requirements and allows engineers to carry out the complete design of prestressed beams, frames, plates, buildings and bridges according to EN 1992-1-1 with National Annexes and SIA 262.

  3. Figure 01 - Export to VCmaster

    Export to VCmaster

    Printout reports created in RFEM and RSTAB can be transferred to VCmaster using a direct interface and further processed there. VCmaster (formerly BauText) is a word processing program for engineers. Calculations, drawings, photos and documents from various sources can be easily compiled, managed and used again with VCmaster.

  4. Figure 01 - Structural System

    Differences of Calculation Methods in Structural Analysis

    For structural dimensioning according to the valid rules, there are often several options or calculation methods to determine the internal forces. It is up to the engineer to decide which theory is suitable to design the structure.

  5. Figure 01 - Exemplary Display of Singularity and Countermeasure

    Singularities in Design of Reinforced Concrete Surfaces

    Singularities occur in a limited area due to the concentration of the stress-dependent result values. They are conditioned by the FEA methodology. In theory, the stiffness and/or the stress in an infinite size concentrate on an infinitesimal small area.

  6. Figure 01 - Structural System

    Forces by Screw in Main-Connected Beam Joint

    RF-/JOINTS Timber - Timber to Timber allows you to design main-connected beam joints. This article explains the determination of forces in screws of a beam connected to a torsionally rigid main beam.

  7. Figure 01 - Structural System with Loads

    Design of Foundation Rotation

    Using RF-/FOUNDATION Pro, it is possible to perform geotechnical design according to EN 1997‑1 [1] for single foundations. The following article explains the design of highly eccentric loading in the foundation core according to DIN EN 1997‑1, A 6.6.5 (see [3]).

  8. 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.

  9. Figure 01 - Simplified Joint Diagram

    Modeling Prestressed Bolt Connection

    When modeling surface models, such as a frame joint or similar structures, there is always the question of how to model a prestressed bolt connection. In this case, it is always necessary to find a compromise between the practicable and detailed solution. The following article describes the modeling procedure of such a connection based on the joint diagram calculation method.

  10. Figure 01 - Defining 'Limit Values for Stability Analysis'

    Limit Values for Stability Analysis in RF-/STEEL EC3

    As of the program version X.11, the filter options of small compression forces or moments for stability analysis in RF-/STEEL EC3 have been revised. The revision of these filter options in the 'Stability' tab of the 'Details' dialog box allows you to work in the module transparently since they are now independent of the design.

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