In addition to our technical support (e.g. via chat), you’ll find resources on our website that may help you with your design using Dlubal Software.
Frequently Asked Questions (FAQ)
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AnswerFor the design of steel cross-sections, it is recommended to only select the members that also have steel as the material. This can be easily controlled in the Views navigator by activating the "Members by Material" option and setting the desired material (see the figure).Then, you can select these members for design in an add-on module.
AnswerIn the case of the "Main member only" joint type, the member can be cut at any angle. The cutting angle δ can be adjusted under the geometry properties (see the figure).
The load values of generated loads are recorded in Table "3.15 Generated Loads." It is not possible to make any changes there.
If you want to change the loads, you have to disconnect the generated loads. You can do this quickly by using the shortcut menu of the load (see the figure).
RF-CONCRETE Columns determines the equivalent moment M0e from the moment M02 at the column head and M01 at the column base according to EN 1992‑1‑1, 18.104.22.168 (2), and performs the design according to the model column method with this equivalent moment M0e.
Now, it may happen, for example, that a computationally larger required reinforcement area would result from the cross-section design with the moment M01 at the column head.
To ensure this, message 28) is displayed, according to which the user should perform a standard design with the internal forces according to the linear static analysis. To do this, simply open the RF‑CONCRETE Members add-on module and perform pure design of the internal forces according to the linear static analysis for the member designed in RF‑CONCRETE Columns.
AnswerThe reason for the different results is probably the settings of effective lengths for the stability analysis. According to the default setting, these are determined automatically in the RF‑/CONCRETE Columns add-on module. However, this method does not work for divided members, and thus no stability analysis is performed (a corresponding warning message appears).If you have entered the effective lengths manually, this only applies to a single member. In order to perform a correct stability analysis of the column as an entire structural component, it is necessary to define it as a set of members.
The result display of intermediate values is generally linked to the member division property. Also, member loads defined in sections in RFEM generate further intermediate results. For example, if a member load defined in sections is distributed from the member start to the member end, the intermediate results are obtained at the member end nodes.
Please check the definition of the scissor hinges in the RSTAB 8 file.
To properly consider the function of a scissor hinge, the scissor hinge of the same type must be specified on the member ends of both members "touching" at a node. If this is not the case, you get the mentioned error message.
If you have got this error message displayed when opening an RSTAB 8 file in RFEM 5, this may lead to problems in the calculation, for example, the structure becomes unstable due to the incorrect hinge definition (already in RSTAB 8).
Therefore, the problem should be adjusted either already in the RSTAB 8 file or in the RFEM model after the import.
AnswerUnfortunately, groups of members cannot be designed in STEEL EC3. A continuous member can only be created and selected to design continuously connected members.
AnswerThe easiest way to find a member is to select Project Navigator - Data. Here, right-click the members and select "Find Members." Now, you can enter the member number, and the member will be marked with an arrow in the graphic.
AnswerNo, this is not possible.The member elastic foundation is basically constant along the member length.If you want to enter a member foundation that is variable along the height of the bored pile, you have to divide the bored pile into the individual members and specify different constant foundations on the individual members. Thus, the linear distribution of the foundation can be simulated approximately.
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Wind Simulation & Wind Load Generation
With the stand-alone program RWIND Simulation, wind flows around simple or complex structures can be simulated by means of a digital wind tunnel.
The generated wind loads acting on these objects can be imported to RFEM or RSTAB.
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