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Frequently Asked Questions (FAQ)
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AnswerThe stress calculations are performed on the stress points of the cross-section.
Cross-sections of cross-section types
- Flat steel
- Square Steel
- Hexagonal steel
- Octagonal steel
- Wide flat steel
If a member with one of these cross-sections is subjected to the design by shear force or torsion, the solid cross-sections should be selected.
There are two options for the export to Advanced Steel:
- Export via the product interface
You can find this interface in the "File" -> menu "Export" in the "Formats for Frameworks" box.
- Export via the Advanced Steel interface
Use the "Advanced Steel" interface to export the data to an smlx format and import it into the target program.
You can also find this interface in the "General Formats for CAD Programs" dialog box in the "Export" dialog box.
AnswerPlease note in connection with the nonlinear calculation that there is no automatic increase of the reinforcement. A nonlinear calculation is based on an already provided reinforcement. This provided reinforcement can result, for example, from the ultimate or limit state designs of the ultimate limit state. The reinforcement applied for the SLS designs can be displayed graphically (see Figure 2).Cause of issue:If no reinforcement results from the ULS or the basic reinforcement in some areas, the serviceability limit state design will be carried out without the applied reinforcement and very high results, for example for the crack width, may result.Solution to the problem:It should be ensured that there is a reinforcement in each zone of the structure. This can be implemented by applying a basic reinforcement (see Figure 3).
AnswerYes, it is.Open the table "1.2 Materials" and the material library for the reinforcing steel. See figure 01.In this material library you can create a new "user-defined" material and edit the standard presets for example for the yield strength. See figure 02.Afterwards you can select this user-defined material for design in table 1.2 in RF-CONCRETE Members and RF-CONCRETE Columns.It is the same for the RSTAB-modules CONCRETE and CONCRETE Columns.
AnswerFor the design of steel surfaces please use the module of the same name RF-STEEL Surfaces. If you also want to consider local denting, then the additional modules RF-STABIL (to determine the bulge and branching loads) and RF-IMP (to determine the imperfection figure, based on the bulge pattern) are also recommended.
AnswerUnfortunately not. Intermediate supports and nodal supports have to be set manually. The default configuration for effective lengths is 1,0*member length and for set of members, one nodal support with definition u_y' and phi_x' is defined on each side of the set of member.To speed up the process of defining nodal supports, you can pick more nodes in one step by using the highlighted function in the attached picture.
AnswerRF- / STEEL EC3 measures cross-sections of cross-section class 4 using the effective width method according to EN 1993-1-5. The existing voltage is taken into account.
AnswerIf you have edited the cross-section values of a cross-section or the stiffnesses of a bar with the function "Modify stiffnesses", these are not used in the additional module STAHL EC3. The modified stiffnesses are only used in the internal force calculation. Therefore, it is better to work with double bars when using the STAHL EC3 design.
AnswerThe method according to EC 3 can only be used for the temperature curves from EN 1990-1-2. In addition, with the simplified calculation of the steel temperature in the EC 3-1-2, it is only possible to take into account increasing temperature profiles; a drop in the temperature is not available in this simplified calculation. However, it is also possible to use direct steel temperatures in the program (see Figure 1).
AnswerIn the examples from the homepage ("cominterfaces-en.zip") there is the following EXCEL file for testing:cominterfaces-de \ SDK \ Examples \ Modules \ Excel \ RS-STEEL_EC3.xlsHere it is possible to get the following results of an example model in the table "Result Design":Last Occasionally,[LinkToImage01]Cross way[LinkToImage02]
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