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Frequently Asked Questions (FAQ)
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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 sets of members to be designed in the add-on module must be based on the same or uniformly running cross-section.A special feature is a set of members consisting of ribs. This results in an identical cross-section only if the integration width of the rib is selected to be the same. Thus, there must be a uniform rib type for the entire set of members.Tapered sets of members are only designed if the entire set of members is linear
Has cross-sectional shape.
AnswerIt is not allowed to transfer printout reports from one program to another. However, it is possible to include the SHAPE-THIN cross-section values and the SHAPE-THIN Cross tab with the RFEM or RSTAB printout report.To do this, open the printout report selection and add the cross-section details of the SHAPE-THIN cross-section, as described in Figure 1.
AnswerIn most cases, ceilings or walls are connected with each other in a hinged manner so that moments from the floor slab are not transferred into the walls. If a line hinge and a downstand beam (rib) are also assigned to the same line, it is important to which surface the line hinge has been assigned.Solution:As the rib is usually assigned to the floor slab, the line hinge should be assigned to the wall (see Figure 1). If this is not the case, an error message appears (see Figure 2) and you still have to abort the creation of the rib.The same is true for line hinges on free slab edges. If a line hinge was created by mistake, RFEM also displays an error message when creating the rib (see Figure 3 and Figure 4).
AnswerTo display the result distribution of a line release or a line hinge, right-click the relevant line release or line hinge. Then, select "Result Diagrams" in the shortcut menu (see Figure 1).
AnswerThere are several ways to check the effective widths of the ribs graphically.Among other things, directly when entering the rib in RFEM, see Figure 1.In the RF-CONCRETE Members add-on module, the cross-section graphic is displayed below ribs of Table 1.4. The graphic shows the equivalent cross-section used for the design, see Figure 2.The Reinforcement - Rendering option in the Project Navigator - Results option allows you to display the member, the rebars, and the stirrups in the RFEM work window, see Figure 3.
AnswerThe add-on module is designed for prestress in the immediate or subsequent composite. The templates for the tendon geometry are based on parabolic diagrams. This means that the modules are not designed explicitly for the design of flat slabs.Possible Figure:The geometric distribution for the free tendon position can not be determined automatically by the add-on modules. However, it is possible to use a user-defined tendon profile as a basis. A prestress without bond could be set by adjusting the friction factors.The deformation analysis can not be performed in the RF-TENDON and RF-TENDON Design add-on modules . However, a deformation analysis on the side of RFEM in conjunction with RF-CONCRETE NL or RF-CONCRETE Deflect could be performed by applying the equivalent prestress loads . The equivalent prestressing loads are exported without the influence of long-term losses and would have to be reduced by a factor corresponding to these losses in RFEM.
AnswerOur authorization has a service entry. This entry describes whether a customer has purchased our software from us with a valid service contract (Basic, Pro) or without a service contract.For a case with a service contract, the entry for the end date related to the service contract concluded with us is stored in the entry. This form of authorization then accepts all assigned versions with a creation date less than this date.For the other case without the service contract, only the current version number at the time of the software purchase (e. G. example, 5.19 - Major Version No. minor version number). In this variant, the authorization only accepts assigned versions with the same major and minor version numbers.
AnswerUnfortunately, it is not possible to give a general answer to the question whether a system is sufficiently discretized. When calculating with Finite Elements, the general rule is that the calculated deformations and stresses no longer deviate from the analytical solution. The goal is to find out the optimal number of FE elements at which the stresses no longer change.Consequently, the user should select the discretization as fine as necessary and as roughly as possible. The general rule is that you always have to select at least 3 FE elements by height for holes or breakthroughs in the structure.How singularities are handled at reentrant corners, etc. is described in the following FAQ .Based on the figures in this article, it is easy to see that, given the insufficient discretization of the system, the geometric intersections of the structure are hardly covered and the system thus approximates to a bending beam. Meaningful design is thus not possible.
AnswerTo create a temperature load on a member with the COM interface, simply use a member load with the following parameters:Dim memload As RSTAB8.MemberLoadmemload.Direction = LocalZTypememload.Distribution = UniformTypememload.Magnitude1 = T_cmemload.Magnitude2 = dTmemload.ObjectList = "1"memload.Type = TemperatureTypeWhere T_c corresponds to the constant temperature component and dT to the surface at the top and bottom side.
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