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Wind Simulation & Wind Load Generation

With the stand-alone program RWIND Simulation, wind flows around simple or complex structures can be simulated by means of a digital wind tunnel.

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

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  1. System and Load

    Design of local load introduction according to EN 1993-1-3

    The design of cold-rolled steel products is governed by EN 1993-1-3. Typical shapes of cold-formed cross-sections are U, C, Z, Hut, or Sigma sections. They are produced from thin-walled sheet metal by roll-forming or edging methods. When designing the ultimate limit states, it is also necessary to ensure that local load application does not lead to compression, crippling of the web or local buckling in the web of the cross-sections. These effects can be caused by local load application through the flange into the web as well as by support forces at the supported points. Section 6.1.7 of EN 1993-1-3 specifies in detail how to determine the resistance of the web Rw, Rd under local load application.

  2. Model check with nodal union

    Function "Unite Nodes": Logic and Use Case

    In RFEM and RSTAB, there are many interfaces available that can simplify the modeling of the structure. From a DXF foil set in the background to the import of IFC objects that can be converted into members or surfaces, to the import of the entire structural system from Revit or Tekla. Regardless of the performance of the selected interface, the further usability also depends on the accuracy of the imported data.

  3. Effective Section Properties

    Design of a Thin-Walled, Cold-Formed C-Section According to EN 1993-1-3

    Utilize the RF-/STEEL Cold-Formed Sections module extension to perform ultimate limit state designs of cold-formed sections according to EN 1993-1-3 and EN 1993-1-5. In addition to the cold-formed cross-sections from the cross-section database, you can also design general cross-sections from SHAPE-THIN.

  4. Maximum distortion at the top

    Nonlinear calculation of a floor slab made of steel fiber reinforced concrete in the ultimate limit state with RFEM

    Steel fiber reinforced concrete is nowadays mainly used for industrial floors or hall floors, for foundation plates with low loads, basement walls and basement floors. Since the publication of the first guideline by the German Committee for Reinforced Concrete (DAfStb) about steel fiber reinforced concrete in 2010, the structural engineer can use standards for the design of the composite material steel fiber reinforced concrete, which makes the use of fiber reinforced concrete increasingly popular in construction. This article describes the nonlinear calculation of a foundation plate made of steel fiber reinforced concrete in the ultimate limit state in the FEM program RFEM.

  5. Input of factor for reduction fct, eff, As, min

    Assumptions for the effective tensile strength in connection with the determination of the minimum reinforcement according to DIN EN 1992-1-1 7.3.2

    When determining the minimum reinforcement for the serviceability limit state according to 7.3.2, the applied effective tensile strength fct, eff has a significant influence on the determined amount of reinforcement. The following section provides an overview for determining the effective tensile strength fct, eff and the input options in RF-CONCRETE.

  6. Wind load

    Calculation of timber panel walls

    This article shows the effect of the different stiffnesses of the timber panel walls on the floor plan.

  7. Settings in the Results Navigator for the RF-PUNCH-Pro Results

    Punching Shear Design in RF-PUNCH Pro Taking Into Account Enlarged Column Head

    In RF-PUNCH Pro, enlarged column heads can be arranged at point-supported punching shear points, thus increasing the shear force resistance of a reinforced concrete floor. In the following article, we will show the punching shear design with the optional application of an enlarged column head.

  8. Natural Fire Scenario

    Fire Design With Parametric Temperature-Time Curve According to DIN EN 1991-1-2

    With RF-/STEEL EC3, you can utilize nominal temperature-time curves in RFEM and RSTAB. The standard time-temperature curve (ETK), the external fire curve and the hydrocarbon fire curve are implemented. Moreover, the program provides the option to directly specify the final temperature of steel.

  9. Adding to RF-/TOWER Equipment

    Creating a User-Defined Antenna Bracket for RF-/TOWER Equipment

    The following article describes how to create a user-defined antenna bracket which will be used in RF-/TOWER Equipment.

  10. Defining the Stress-Strain Curve of Steel Fiber Reinforced Concrete

    Determining the Material Properties of Steel Fiber Reinforced Concrete and Using in RFEM

    Steel fiber reinforced concrete is nowadays mainly used for industrial floors or hall floors, for foundation plates with low loads, basement walls and basement floors. Since the publication of the first guideline by the German Committee for Reinforced Concrete (DAfStb) about steel fiber reinforced concrete in 2010, the structural engineer can use standards for the design of the composite material steel fiber reinforced concrete, which makes the use of fiber reinforced concrete increasingly popular in construction. This article explains the individual material parameters of the steel fiber reinforced concrete and how to deal with these material parameters in the FEM program RFEM.

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