Double-click on the relevant surface to open the "Edit Surface" dialog box. You can use the Select function to select the boundary lines. If lines that are already in the list are selected again, they are removed from the list. This option allows you to save a lot of time, especially for geometrically complex surfaces with many boundary lines.
Changing Boundary Lines of Surfaces
If the geometry of a surface for which you must remove some of the existing boundary lines changes subsequently, you do not need to redefine the surface.
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Mr. Fröhlich provides technical support to our customers and is responsible for development in the area of reinforced concrete structures.
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![Modifying Boundary Lines](/en/webimage/010439/2986115/01_Begrenzungslinien_ändern_en.png?mw=512&hash=10deb357bfb8bf3668412234fddacaeb75926b05)
If the geometry of a surface for which you must remove some of the existing boundary lines changes subsequently, you do not need to redefine the surface.
![KB 001883 | Plate Girder Design According to AISC 360-22 in RFEM 6](/en/webimage/051561/3980997/im1.png?mw=512&hash=b8237709c4f30213fac51d86d32a42bddde72f03)
Plate girder is an economical choice for long spans construction. I-section steel plate girder typically has a deep web to maximize its shear capacity and flange separation, yet thin web to minimize the self-weight. Due to its large height-to-thickness (h/tw) ratio, transverse stiffeners may be required to stiffen the slender web.
![Steel Connection Rigidity and Its Influence on Structural Design](/en/webimage/051432/3972404/Rigidity-caseA.png?mw=512&hash=3be64e68ab2956fd2b92f0afa1559b3a8c72b468)
Understanding steel connection rigidity is crucial in structural design. Often, connections are treated as strictly pinned or rigid, but this can lead to uneconomical or even dangerous designs. Explore how Dlubal Software's RFEM and Steel Joints add-on help verify connection stiffness and moment resistance, ensuring safer and more economical designs.
![Timber Panel Wall Stiffnesses](/en/webimage/049956/3893282/49956.png?mw=512&hash=8dfc2b6d0af6ade74073e21655c6a73a34a77751)
In this article, the calculation of a timber panel wall with the beam panel thickness type is compared with a manual calculation.
![Add-on "Steel Joints for RFEM 6" | Component Library](/en/webimage/043097/3898884/steel_joints_components.png?mw=512&hash=e4f835906155863fc7019d5043b22e553dc766f9)
- Numerous component types, such as base and end plates, web angles, fin plates, gusset plates, stiffeners, tapers, or ribs for easy input of typical connection situations
- Universally applicable basic components (such as plates, welds, bolts, auxiliary planes) for modeling complex connection situations
- Graphical display of the connection geometry with dynamic updating during the input
- Wide range of cross-section shapes: I-sections, U-sections, angles, T-sections, hollow sections, built-up cross-sections and thin-walled sections
- Library in the Dlubal Center with a large number of program-side template connections, including user-defined templates
- Automatic adaptation of the connection geometry based on the relative arrangement of the components to each other – even in case of subsequent editing of the structural components
![Feature 002828 | Fire Design of Slabs and Walls According to Simplified Table Method](/en/webimage/050837/3925042/50837.png?mw=512&hash=b06639a36ab8b62ab6d08e08552a5ec274469a37)
In the Concrete Design add-on for RFEM 6, you can perform the fire design of reinforced concrete slabs and walls according to the simplified table method (EN 1992‑1‑2, Section 5.4.2 and Tables 5.8 and 5.9).
![Feature 002826 | Punching Shear Reinforcement](/en/webimage/050658/3936123/50658.png?mw=512&hash=ae20d4ca78cdf203a2c2d3ccbb7daa0f324da77a)
In the Concrete Design add-on, you have the option to define an existing vertically oriented punching shear reinforcement. This is then taken into account in the punching shear design.
![Feature 002824 | OSB Material for USA and Canada](/en/webimage/050460/3955503/2024-06-28_10-42-39.png?mw=512&hash=5ec86ff7955d8c9a50e53301df3f21fceda009a5)
In RFEM, the oriented strand board (OSB) material is available for the USA and Canada. The material parameters are taken from the "Panel Design Specification manual".
Is it possible to change the font size in the window for result diagrams?
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