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Frequently Asked Questions (FAQ)
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To ensure that the cross-sections are recognized when directly importing girders and columns in REVIT, a corresponding family must be available for these components in the REVIT project.
If this is not the case, you can import a suitable family into your project during the import process. The interface then independently recognizes all other cross-sections and creates the corresponding cross-sections within the family.Figure 01 does not show a 480/520 (mm) timber column. After importing the correct family type, this cross-section and all other cross-sections of the same type are recognized and the import process is successfully completed.
AnswerYes, you can define the required glass pane structure in tab 1.2 Layers. To be able to define insulated glass, you have to assign at least one glass layer to the structure. Then, you receive the additional option for the gas layer.After defining the gas layer, you receive additional tabs where you can enter more specific data for the design.
If two members are hinged to each other, the corresponding release must be assigned to only one of these members.
If there are three members, which are all hinged, two of the three members will have the corresponding release.
Generally, a nodal point with a completely pinned design with an arbitrary number of member ends receives a total of one member hinge less than the existing number of member ends:
Number of member ends: n
Number of Member Hinges for Completely Hinged Connectors: n-1
Bei weniger als n-1 Stabendgelenken sind die jeweiligen Stabenden ohne Gelenk biegesteif miteinander verbunden.
Bild 1 zeigt drei Varianten eines Hauptträgers, an welchen ein Nebenträger anschließt:
Wird ein Stabendgelenk zuviel angesetzt, so kann es zum Abbruch der Berechnung aufgrund von Instabilität kommen. Demnach ist die oben beschriebene Regel zu beachten.
- Vollständig biegesteife Verbindung - kein Stabendgelenk
- Teilweise gelenkige Verbindung: Der Nebenträger schließt gelenkig an den durchlaufend biegesteifen Hauptträger an - ein Stabendgelenk
- Vollständig gelenkige Verbindung: Alle drei Stäbe schließen gelenkig aneinander an - zwei Stabendgelenke
AnswerWith the model check, members that cross each other but do not have a common node at the point of intersection can be found (see Figure 1). To check the model, select Tools -> Model check -> Opening or closing intersecting members.
The results are shown in the "Groups of Crossing Not Connected Members" dialog section. The crossing members are listed in groups; the current group is represented by a
The "What is to be done with" dialog section controls how the crossing members are handled. The "Connect members" option is suitable for actual transfer options for internal forces, but not for For example, for usual diagonal crossings with tension members.
Alternatively, it is also possible to use the model check to display the member pairs as an Excel list or to create visibilities. The visibilities created in this way can be quickly used to find and delete relevant members in the model.
AnswerWith the national annex ÖNORM B 1991-1-3: 2018-12, Austria has redrafted the width of the tolerance zones textually.
 In the third paragraph under the heading "Annex B", the standard accordingly states that within 2.5 km on both sides of the zone boundary, the characteristic value s k is the average of the affected zones. In the area of Vienna, we can assume a 250 m per side. This results in a tolerance zone width of 2 x 2.5 km = 5 km inland and of 2 x 250 m = 500 m in Vienna.
AnswerA collapse or tear-resistance according to DIN EN 1992-1-1, 9.4.1 (3) is not output separately in RF-PUNCH Pro and must be additionally taken into account by the designer.
AnswerThis is possible. For this purpose, we select the temperature in the member load and display a random distribution over the depth of the cross-section.
AnswerThe nonlinear contact between member and membrane can be done by a set of member elements between the member and the surface. This requires that the member lies eccentrically in the plane of the compressive force resulting from the membrane effect and the connection line of the membrane connection. The geometric distance between member and membrane itself has to be aligned to the physical distance between member axis and membrane connection.To ensure that the coupling runs homogeneously over the entire coupled length, it is necessary to ensure a uniform arrangement with the same number of FE nodes on the member axis and on the projected contact line on the membrane surface. This division and orientation of the FE nodes is achieved by placing the corresponding topology nodes on the member axis and the corresponding line of contact on the surface. The distance of the Topology Node affine to the selected mesh size of the connected Membrane Surface should be selected.The coupling itself must be designed with a rigid member failing nonlinearly under compressive load between the resulting nodal pairs. In this case, the specified nonlinearity must be implemented with a member nonlinearity "Failure under tension". The connection of the rigid member in the area of the eccentric member is completely compatible (bending-resistant) and must be carried out with a free translational hinge related to the rigid member axis in the y / z axis in the area of the membrane.Due to the selected nonlinearity and the alignment with the compression force resultant in connection with the free translational hinge, this contact modeling is able to transfer only compressive forces to the connected cross member. In case of a suction load, the coupling components fail and the membrane moves away from the cross member without hindrance.
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.
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