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  1. Figure 01 - Settings for the Deformation Analysis with RF-CONCRETE Deflect

    Distribution Coefficient ζ in the Deformation Analysis of Reinforced Concrete Components

    Performing serviceability limit state design also includes taking into account the allowable deformation. The calculation of the deformation of reinforced concrete components depends on whether or not the observed cross-section is cracking under the applied loading. The governing control parameter in RF-CONCRETE Deflect is the distribution coefficient ζ.
  2. Figure 01 - Adjusted Value Range

    Documenting Graphical Results of Reinforcement in RF-CONCRETE Surfaces

    RFEM offers different options to display results graphically which have been determined in RF-CONCRETE Surfaces. This article gives an overview of these options.
  3. Figure 01 - Model with FE Mesh

    Modeling and Bending Design of Point-Supported Flat Slab

    This article describes how a flat slab is generated as 2D model in RFEM and the loading is applied according to Eurocode 1.
  4. Figure 01 - Setting: Reinforcement Direction With Main Tension Force in the Considered Element

    Secondary Reinforcement According to DIN EN 1992-1-1 9.2.1 to Ensure Ductile Structural Component Behavior

    The secondary reinforcement according to DIN EN 1992-1-1 9.2.1 is used to ensure the desired structural behavior. It should avoid failure without prior notification. The minimum reinforcement has to be arranged independently of the size of the actual loading.
  5. Figure 01 - Structure

    Design of Big Openings in Beams and Downstand Beams

    Since the ultimate limit state of beams in the area of openings is affected, particular attention should be payed to this. In general, small openings can be sufficiently covered by adapting the beam structure to the openings. For big openings, it is necessary to consider and model the area separately.
  6. 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.

  7. Figure 01 - Notations for Connection Between Flange and Web (Source: [1])

    Downstand Beams, Ribs, T-Beams: Shear Between Web and Flanges

    In order to ensure the effects of panels, which should act as tensile or compression chords, it is necessary to connect them to the web in a shear-resistant manner. This connection is obtained in a similar way as the shear transfer in the joint between concreting sections by using the interaction between compressive struts and ties. In order to ensure the shear resistance, it must be verified that the compressive strut resistance is given and the tie force can be absorbed by the transverse reinforcement.

  8. Figure 01 - System and Loading

    Nonlinear Analysis in RF-/CONCRETE

    When designing reinforced concrete components according to EN 1992‑1‑1 [1], it is possible to use nonlinear calculation methods to determine internal forces for the ultimate limit state and the serviceability limit state. In this case, the internal forces and deformations are determined with respect to their nonlinear behaviour. The analysis of stresses and strains in cracked state usually provides the deflections, which clearly exceed the linearly determined values.

  9. Figure 01 - Curtailment of Longitudinal Reinforcement from [1]

    Displaying Curtailment of Longitudinal Reinforcement and Reinforcement Covering Line

    In the case of a huge amount of reinforcement, it might be useful to grade the longitudinal reinforcement of a beam. The grading corresponds to the tensile force distribution. Using RF-CONCRETE Members and CONCRETE, you can specify the curtailment of the reinforcement, which is considered in the automatically proposed reinforcement for the longitudinal reinforcement. When determining this reinforcement proposal, it is necessary to ensure that the envelope of the acting tensile force can be absorbed.

  10. Figure 01 - M1: Member Structure in Rendered View

    Downstand Beams, Ribs, T-Beams: Deformation and Deflection in Cracked State

    RFEM and the RF-CONCRETE add-on modules provide various options for the deformation analysis of a T-beam in cracked state (state II). This technical article describes the calculation methods (C) and modelling options (M). Both the calculation methods and the modelling options are not limited to T-beams, but will only be explained using an example of this system.

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