The Effective Sections extension is fully integrated in RSECTION. Therefore, all input options of RSECTION are available to you. You only need to specify the standard group in the Base Data, according to which the effective cross-section is to be determined. After importing the section into the main program RFEM or RSTAB, it is available for design in the Steel Design and Aluminum Design add-ons like a library section.
![KB 001885 | Assessment of Story Drift under Seismic Loads According to ASCE 7-22 and the Building Model](/en/webimage/051645/3995306/im1.png?mw=512&hash=b8237709c4f30213fac51d86d32a42bddde72f03)
![KB 001877 | ASCE 7-22 and NBC 2020 Seismic P-Delta Considerations in RFEM 6](/en/webimage/048528/3803808/Image_01_-_Interstory_Drifts.png?mw=512&hash=dda93b6dc2bff834091aa0c09a68a55dab800606)
![KB 001875 | AISC 341-22 Moment Frame Member Design in RFEM 6](/en/webimage/047794/3736755/im01.jpg?mw=512&hash=33697d419a0e8a96b738e8e2e97fae057743a108)
![KB 001860 | NBC 2020 Modal Response Spectrum Analysis and Base Shear Considerations in RFEM 6](/en/webimage/044604/3625998/Image_0.png?mw=512&hash=d87dc0138e82ba8cab464782074e5aa2b1fb3d3d)
![buildingSMART Logo](/en/webimage/026394/3193710/ifc.png?mw=512&hash=e65a1c3dd46dbfeacc72f97e5ec8414ca9abccb5)
Dlubal software has many different interfaces. One of them is the IFC (Industry Foundation Classes) interface. This is divided into several areas, called "Views". Furthermore, there are various versions of the IFC format. Take a closer look here. Version 4.0 is supported for both import and export. However, the older version 2x3 is only supported for import. Regardless of in which direction you exchange the data, you can process the StructuralAnalysisView as well as the ReferenceView (Coordination View).
When importing the ReferenceView, the individual IFC objects can be converted into RFEM-native elements. You can also use the conversion tables to adapt the cross-section and material descriptions. The export in the ReferenceView allows you to display the structure in IFC viewers and CAD programs. On the other hand, StructuralAnalysisView allows you to transfer the structural model including loading. As you can see, there are numerous options available to you.
Online Documentation for IFC To Event Page![Steel Design | Seismic Force-Resisting System Design Overview](/en/webimage/048507/3803346/seismic_steel.png?mw=512&hash=1c18a83f050e74601a7300444a0d77a0246a0e02)
- Design of five types of seismic force-resisting systems (SFRS) includes Special Moment Frame (SMF), Intermediate Moment Frame (IMF), Ordinary Moment Frame (OMF), Ordinary Concentrically Braced Frame (OCBF), and Special Concentrically Braced Frame (SCBF)
- Ductility check of the width-to thickness ratios for webs and flanges
- Calculation of the required strength and stiffness for stability bracing of beams
- Calculation of the maximum spacing for stability bracing of beams
- Calculation of the required strength at hinge locations for stability bracing of beams
- Calculation of the column required strength with the option to neglect all bending moments, shear, and torsion for overstrength limit state
- Design check of column and brace slenderness ratios
![Seismicity in Steel Design Add-on | Results](/en/webimage/048272/3780831/Result.png?mw=512&hash=f0621777339b8f63b334b9d11f44f77f58603014)
The seismic design result is categorized into two sections: member requirements and connection requirements.
The "Seismic Requirements" include the Required Flexural Strength and the Required Shear Strength of the beam-to-column connection for moment frames. They are listed in the ‘Moment Frame Connection by Member’ tab. For braced frames, the Required Connection Tensile Strength and the Required Connection Compressive Strength of the brace are listed in the ‘Brace Connection by Member’ tab.
The program provides the performed design checks in tables. The design check details clearly display the formulas and references to the standard.
![Feature 002794 | "Dashpot" Member Type](/en/webimage/048112/3832303/48112.png?mw=512&hash=fb864cf4212a216975937f682689768364249c1f)
Using the "Damper" member type, you can define a damping coefficient, a spring constant, and a mass. This member type extends the possibilities within the Time History Analysis.
With regard to viscoelasticity, the "Damper" member type is similar to the Kelvin-Voigt model, which consists of the damping element and an elastic spring (both connected in parallel).