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Frequently Asked Questions (FAQ)
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AnswerIf you only want to transfer the wind loads on the gable over the columns and not via the girder, you can deactivate it in the settings of the load generator by using the setting "Correction of generated loads" (see Figure 1).
AnswerThe error 12303 means that the generated load via Tools - Generate Loads on Member does not find a member or is badly defined on a certain member.You can control the generated load in column 3.15 or via double click to the load. In this dialogue you can select the edge nodes to correct the defined area.
AnswerUnfortunately, this is not possible so far. The additional loads can only be considered as equal load over the whole carrier.
AnswerThis is because the effective lengths or buckling lengths of bars and staff sets differ. While the actual length of the bars is used for the proof of stability, for bar sets it is the length of the combined bars.exampleThe frame shown in the picture (see picture 1) consists of a bar divided into 4 bars of equal length. In addition, a set of rods is created for the 4 rods. The proof of stability is carried out for both cases according to the substitute rod method.When dimensioning the bars, the length is calculated to be 1.00 m. In contrast, the rod set is 4.00 m long (see Figure 2). Of course, the difference in lengths has an effect on the stability rating, which means that the workloads also differ (see Figure 3)It is also not recommended to calculate all bars and sets of bars in a design case, as this leads to falsified results.
AnswerThe most convenient and fastest solution is to copy a load case to the next load case. If already generated loads have been created for several load areas in a load case (see Figure 1), all loads are transferred to the next load case during copying (see Figure 2). Subsequently, only the load values of the generated loads have to be adapted to the respective load case.This method is particularly useful for plane structures whose load type remains the same.
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.
AnswerA dimensioning of cold-formed, thin-walled components and sheets according to EN 1993-1-3 is not possible with RF- / STEEL EC3.
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.
AnswerThis is currently not possible in the rated modules. Strength classes> C 100/115 are not regulated in the standards and require approval in individual cases. These ultra-high-strength concretes usually have a different behavior and therefore can not be measured according to the current procedures of the standard.
AnswerIf you want to use a custom material in the design modules, you must make sure that it has the same properties as a standard-specific material.Example: You want to dimension a custom material in RF / concrete according to EN 1992-1-1. To create the material proceed as follows: In the material library, select a material of the EN 1992-1-1 series and select "Create new material ...". Here you can change all given values. All these values are required for a design in the add-on module.
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