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Frequently Asked Questions (FAQ)
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AnswerThe result display with result values on surfaces is very helpful for this.It is already preset that only extreme values are displayed. In addition, you can specify in the Results navigator whether the extreme values of the entire model, all surfaces or solids, or all local peak values should be displayed.
AnswerResult values can be rotated by an arbitrary angle (see Figure 1). With this setting, all result values are rotated. So far, you can not define different orientations for single walls and ceilings.
AnswerWhen displaying the punching diameters by shear force in the critical perimeter, RFEM uses internal sections. The critical control perimeter is automatically assigned an internal division. Thus, the result values are determined on each FE mesh node and on the internal division points. In the Display navigator, you can either display all values for the sections or only the extreme value. Thus, a coarser division or output of values can not be set.
AnswerPlease note that in the context of the nonlinear calculation, the reinforcement is not increased automatically. A nonlinear calculation is based on an already provided reinforcement. This provided reinforcement can result, for example, from the ultimate limit state designs or a defined ground reinforcement. 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 is carried out without the applied reinforcement, and very high results may result, for example in the crack width.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).
AnswerThis is exactly what you can do very quickly with a result combination. If you add the individual load cases, load combinations or result combinations with the criterion "Or" (see Figure 1), the maximum or minimum results will become the sameEnvelope calculated. Further information on the use of result combinations can be found in our manual.
AnswerThis is due to the fact that the respective corner nodes for defining the arealas plane are duplicated in the selection window. If one of them is deleted, the correct values are displayed in the info window after clicking OK.
AnswerYou will find this option in the settings for the combination rules.There, the hook can be set at "Favourable permanent action".This generates combinations of 1.35 * G + 1.50 * Q on the one hand. On the other hand you get the same combinations with 1.00 * G + 1.50 * Q.These can then be used in the additional modules for further proof.
AnswerYou can change the cross-section, generally adjust the model and its loads, or activate stabilization measures in STEEL EC3.The rotatable restraint and shear panel settings defined in window Members 1.12 Parameters or 1.13 Threshold Parameters Parameters, which are then considered in the module-internal eigenvalue solver to determine the contraction load, are particularly suitable for this.
AnswerFor the pile tip resistance, the bedding must be multiplied by the cross-sectional area (see Figure 1).For skin friction, the bedding must be multiplied by the circumference of the cross section (see Figure 2).
AnswerAccording to the specifications of EC2, the steel tension design in the SLS is performed only with the characteristic combination. If no combination of the "characteristic" type is selected, the design is not carried out. There are three ways to counter this:1. Adding an additional combination of the "characteristic" type to the selection of the combinations to be designed.2. Changing the combination type of an already selected combination so that it is regarded as a characteristic combination.3. Modify specification of standard and activate design in detail settings for other combination types (frequent or quasi-permanent).
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