The program does a lot of work for you. For example, the load or result combinations required for the serviceability limit state are generated and calculated in RFEM/RSTAB. You can select these design situations for the deflection analysis in the Aluminum Design add-on. Depending on the specified precamber and reference system, the program determines the deformation values at each location of a member. They are then compared to the limit values.
You can specify the deformation limit value individually for each structural component in Serviceability Configuration. In this case, you define the maximum deformation depending on the reference length as the allowable limit value. By defining design supports, you can segment the components. In this way, you can determine the corresponding reference length automatically for each design direction.
And that's not all. Based on the position of the assigned design supports, the program allows you to automatically determine the distinction between beams and cantilevers. The limit value is thus determined accordingly.
When calculating the deflection limit, you have to consider certain reference lengths. You can define these reference lengths and the segments to be checked independently of each other, depending on the direction. For this, define design supports at the intermediate nodes of a member and assign them to the respective direction for the deformation analysis. Thus, the segments are created where you can define a precamber for each direction and segment.
Full integration in RFEM/RSTAB including import of all relevant information and internal forces
Design of members and continuous members for tension, compression, bending, shear, and combined internal forces
Stability analysis for lateral-torsional buckling and buckling according to the equivalent member method or the second order analysis
Serviceability limit state design by limitation of deflections
Brazilian material library and cross-section library
User-defined entry of rectangular and circular cross-sections
Cross-section optimization with optional transfer to RFEM/RSTAB
Optional import of effective lengths from the RSBUCK or RF‑STABILITY add‑on module
Detailed result documentation including references to design equations of the used standard
Various filter and sorting options of results including result lists by member, cross-sections, x-location, or by load case, load and result combination
Consideration of moisture service conditions
Visualization of the design criterion on the RFEM/RSTAB model
Full integration in RFEM/RSTAB including import of all relevant information and internal forces
Design of members and continuous members for tension, compression, bending, shear, and combined internal forces
Stability analysis for lateral-torsional buckling and buckling according to the equivalent member method or the second order analysis
Serviceability limit state design by limitation of deflections
Free configuration of charring time and charring rates, as well as free choice of charring sides for fire design
South African material library and cross‑section library
User-defined entry of rectangular and circular cross-sections
Cross-section optimization with optional transfer to RFEM/RSTAB
Optional import of effective lengths from the RSBUCK or RF‑STABILITY add‑on module
Detailed result documentation including references to design equations of the used standard
Various filter and sorting options of results including result lists by member, cross-sections, x-location, or by load case, load and result combination
Consideration of moisture service conditions
Visualization of the design criterion on the RFEM/RSTAB model
Your RFEM/RSTAB program is responsible for generating and calculating the load and result combinations required for the serviceability limit state. Select the design situations for the deflection analysis in the Timber Design add-on. The calculated deformation values are then determined at each location of a member, depending on the specified precamber and the reference system, and then compared to the limit values.
You can specify the deformation limit value individually for each structural component in Serviceability Configuration. In this case, the maximum deformation should not exceed the permissible limit value, depending on the reference length. When defining design supports, you can segment the components. This allows you to determine the corresponding reference length automatically for each design direction.
Based on the position of the assigned design supports, the program automatically determines the difference between beams and cantilevers. Thus, you can be sure that the limit value is determined accordingly.
Design of members and sets of members for tension, compression, bending, shear, combined internal forces, and torsion
Stability analysis of buckling, torsional, and flexural-torsional buckling
Automatic determination of critical buckling loads and critical buckling moments for general load applications and support conditions by means of a special FEA program (eigenvalue analysis) integrated in the module
Alternative analytical calculation of the critical buckling moment for standard situations
Optional application of discrete lateral supports to beams and continuous members
Automatic cross-section classification
Serviceability limit state design (deflection)
Cross-section optimization
A wide range of available cross-sections, such as rolled I-sections; channel sections; T-sections; angles; rectangular and circular hollow sections; round bars; symmetrical and asymmetrical, parametric I-, T-, and angle sections; double angles
Clearly arranged input and result windows
Detailed result documentation including references to design equations of the used standard
Various filter and sorting options of results, including result lists by member, cross-sections, x-location, or by load case, load and result combination
Result tables of member slenderness and governing internal forces
Design of members and sets of members for tension, compression, bending, shear, torsion, and combined internal forces
Stability analysis of buckling, torsional, and flexural-torsional buckling
Automatic determination of critical buckling loads and critical buckling moments for general load applications and support conditions by means of a special FEA program (eigenvalue analysis) integrated in the module
Alternative analytical calculation of the critical buckling moment for standard situations
Optional application of discrete lateral supports to beams and continuous members
Automatic cross-section classification
Serviceability limit state design (deflection)
Cross-section optimization
A wide range of available cross-sections, such as rolled I-sections; channel sections; T-sections; angles; rectangular and circular hollow sections; round bars; symmetrical and asymmetrical, parametric I-, T-, and angle sections; double angles
Clearly arranged input and result windows
Detailed result documentation including references to design equations of the used standard
Various filter and sorting options of results, including result lists by member, cross-sections, x-location, or by load case, load and result combination
Result tables of member slenderness and governing internal forces
You can individually define all reference lengths that need to be considered in the calculation of the deflection limit value, as well as the segments to be checked, depending on the direction. For this, define design supports at the intermediate nodes of a member and assign them to the respective direction for the deformation analysis. Thus, the segments are created where it is possible to define a precamber for each direction and segment.
Design of members and sets of members for tension, compression, bending, shear, torsion, and combined internal forces
Stability analysis of buckling and lateral-torsional buckling
Automatic determination of effective radius of gyration by special integrated FEA software (eigenvalue analysis) for general loading and support conditions
Alternative analytical calculation of effective radius of gyration for standard situations
Optional application of discrete lateral supports to beams
Definition of nodal supports for sets of members
Serviceability limit state design (deflection)
Cross-section optimization
A wide range of available cross-sections, such as rolled I-sections, channel sections, T-sections, angles, rectangular and circular hollow sections, round bars, and many others.
Detailed result documentation including references to design equations of the used standard
Various filter and sorting options of results, including result lists by member, cross-sections, and x-location, or by load case, load and result combination
Result table of member slenderness and governing internal forces
After opening the add‑on module, it is necessary to select the members/sets of members, load cases, load or result combinations for the ultimate limit state, serviceability limit state, and fire resistance design. The materials from RFEM/RSTAB are preset and can be adjusted in RF‑/TIMBER SANS. Material properties listed in the respective standard are included in the material library.
When checking the cross-sections, you can specify whether to consider a cross-section selected in RFEM/RSTAB, or a modified cross-section. Then, you can define the load duration classes, the moisture service conditions, and timber treatment.
The deformation analysis requires the reference lengths of the relevant members and sets of members. Furthermore, you can define a specific direction of deflection, precamber and the beam type.
For fire resistance design, you can define the charring sides of a member or set of members.
Did you know? You can individually define the reference lengths to be considered in the calculation of the deflection limit value and the segments to be checked, depending on the direction. For this, define design supports at the intermediate nodes of a member and assign them to the respective direction for the deformation analysis. In the resulting segments, you can also define a precamber for each direction and segment.
Design of members and sets of members for tension, compression, bending, shear, combined internal forces, and torsion
Stability analysis of buckling and lateral-torsional buckling
Automatic determination of critical buckling loads and critical buckling moments for general load applications and support conditions by means of a special FEA program (eigenvalue analysis) integrated in the module
Alternative analytical calculation of the critical buckling moment for standard situations
Optional application of discrete lateral supports to beams and continuous members
Automatic cross-section classification (compact, noncompact, and slender)
Serviceability limit state design (deflection)
Cross-section optimization
A wide range of available cross-sections, such as rolled I-sections, channel sections, T-sections, angles, rectangular and circular hollow sections, round bars, symmetrical, asymmetrical, parameterized I-, T-, and angle sections, as well as user-defined SHAPE‑THIN sections
Clearly arranged input and result windows
Detailed result documentation including references to design equations of the used standard
Various filter and sorting options of results including result lists by member, cross-section, x-location, or by load cases, load and result combinations
Result table of member slenderness and governing internal forces
After opening the add-on module, it is necessary to select the members/sets of members, load cases, load or result combinations for the ultimate and the serviceability limit state design. The materials from RFEM/RSTAB are preset and can be adjusted in RF-/TIMBER CSA. Material properties listed in the respective standard are included in the material library.
When checking the cross-sections, you can specify whether to consider a cross-section selected in RFEM/RSTAB, or a modified cross-section. Then, you can define the load duration classes, the moisture service conditions, and timber treatment.
The deformation analysis requires the reference lengths of the relevant members and sets of members. Furthermore, you can define a specific direction of deflection, precamber and the beam type.
For fire resistance design, you can define the charring sides of a member or set of members.
After the calculation, the module shows clearly arranged tables listing the required reinforcement and the results of the serviceability limit state design. All intermediate values are included in a comprehensible manner. In addition to the tables, current stresses and strains in a cross‑section are represented graphically.
The reinforcement proposals of the longitudinal and the shear reinforcement, including sketches, are documented in accordance with current practice. It is possible to edit the reinforcement proposal and to adjust, for example, the number of members and the anchorage. The modifications will be updated automatically.
A concrete cross‑section, including reinforcement, can be visualized in a 3D rendering. This way, the program provides an optimal documentation option to create reinforcement drawings, including steel schedule.
Crack width analyzes are performed using the selected reinforcement of internal forces in the serviceability limit state. The result output covers steel stresses, the minimum reinforcement, limit diameters, and the maximum bar spacing, as well as crack spacing and the maximum crack widths.
As a result of the nonlinear calculation, there are the ultimate limit states of the cross‑section with defined reinforcement (determined linear elastically) as well as effective deflections of the member considering stiffness in cracked state.
The cross-section resistance design analyzes tension and compression along the grain, bending, bending and tension/compression as well as the strength in shear due to shear force.
The design of structural components at risk of buckling or lateral buckling is performed according to the Equivalent Member Method and considers the systematic axial compression, bending with and without compression force as well as bending and tension. The deflection of inner spans and cantilevers is compared to the maximum allowable deflection.
Separate design cases allow for a flexible and stability analysis of members, sets of members, and loads.
Design-relevant parameters such as such as stability analysis, load duration in case of fire, member slendernesses, and limit deflection can be adjusted as desired.
The cross-section resistance design analyzes tension and compression along the grain, bending, bending and tension/compression as well as the strength in shear due to shear force.
The design of structural components at risk of buckling or lateral buckling is performed according to the Equivalent Member Method and considers the systematic axial compression, bending with and without compression force as well as bending and tension. The deflection of inner spans and cantilevers is compared to the maximum allowable deflection.
Separate design cases allow for a flexible and stability analysis of members, sets of members, and loads.
Design-relevant parameters such as load duration in case of fire, member slendernesses, limit deflection can be adjusted as desired.
After opening the add‑on module, it is necessary to select the members/sets of members, load cases, load or result combinations for the ultimate limit state, serviceability limit state, and fire resistance design (only ASD). Also, you can select the design method (ASD or LRFD). The materials from RFEM/RSTAB are preset and can be adjusted in RF-/TIMBER AWC. Material properties listed in the respective standard are included in the material library.
When checking the cross-sections, you can specify whether to apply the design values of the relevant standard, or user-defined values. Then, you can consider the load duration classes (LDC), temperature effects, and moisture service conditions.
The deformation analysis requires the reference lengths of the relevant members and sets of members. Furthermore, you can define a specific direction of deflection, precamber and the beam type.
For fire resistance design, you can define the charring sides of a member or set of members.
The cross-section resistance design analyzes tension and compression along the grain, bending, bending and tension/compression as well as the strength in shear due to shear force.
The design of structural components at risk of buckling or lateral buckling is performed according to the Equivalent Member Method and considers the systematic axial compression, bending with and without compression force as well as bending and tension. Deflection of inner spans and cantilevers is compared with the maximum allowable deflection.
Separate design cases allow a flexible analysis for selected members, sets of members, and actions, as well as for the individual stability analyses. such as stability analysis, load duration in case of fire, member slendernesses, and limit deflection can be adjusted as desired.
There are various options available for beam modeling. Graphical representations facilitate the geometry input. Modifications are updated automatically. Deflection of cantilevers can be set in the serviceability limit state design, independently of the deflection in the span.
In order to enter permanent loads (for example, roof structure), you can use a comprehensive and extensible material library. Generators integrated in RX-TIMBER Purlin allow for convenient generation of various wind and snow load cases.
Load cases are displayed graphically and superimposed in automatically generated load combinations according to EC 5. This way, the required input data are reduced to a minimum. However, you can enter load specifications manually as well.
After opening the add-on module, it is necessary to select the members/sets of members, load cases, load or result combinations for the ultimate and the serviceability limit state design. The materials from RFEM/RSTAB are preset and can be adjusted in RF‑/TIMBER NBR. The material properties listed in the respective standard are included in the material library.
When checking the cross-sections, you can specify whether to consider a cross-section selected in RFEM/RSTAB, or a modified cross-section. Then, you can define the load duration classes, moisture service conditions, and timber treatment.
The deformation analysis requires the reference lengths of the relevant members and sets of members. Furthermore, you can define a specific direction of deflection, precamber and the beam type.
Cross-section designs of members and sets of members for tension, compression, bending, shear, torsion, and combined internal forces
Stability analysis of buckling, torsional, and flexural-torsional buckling
Automatic determination of critical buckling loads and critical buckling moments for general load applications and support conditions by means of a special FEA program (eigenvalue analysis) integrated in the module
Alternative analytical calculation of the critical buckling moment for standard situations
Optional application of discrete lateral supports to continuous members
Automatic cross-section classification
Serviceability limit state design (deflection)
Cross-section optimization
A wide range of available cross-sections, such as rolled I-sections, channel sections, T-sections, angles, rectangular and circular hollow sections, round bars, symmetrical and asymmetrical, parametric I-, T-, and angle sections, and many others.
Clearly arranged input and result windows
Detailed result documentation including references to design equations of the used standard
Various filter and sorting options of results, including result lists by member, cross-sections, x-location, or by load case, load and result combination
Result window of member slenderness (optional) and governing internal forces
The design analyzes tension and compression along the grain, bending, bending and tension or compression, and shear due to shear force with and without torsion. Designs proceed at the level of design stress values. The design of structural components at risk of buckling or lateral buckling is performed according to the Equivalent Member Method and considers the systematic axial compression, bending with and without compression force as well as bending and tension.
The deflection in the characteristic and quasi-permanent design situations is determined for inner spans and cantilevers. Separate design cases allow for a flexible analysis of specific actions as well as for individual stability analyses. You can define the design type to be performed in the Control Parameters window.
Design of members and sets of members for tension, compression, bending, shear, combined internal forces, and torsion
Stability analysis of buckling and lateral-torsional buckling
Automatic determination of critical buckling loads and critical buckling moments for general load applications and support conditions by means of a special FEA program (eigenvalue analysis) integrated in the module
Alternative analytical calculation of the critical buckling moment for standard situations
Optional application of discrete lateral supports to beams and continuous members
Automatic cross-section classification (compact, noncompact, and slender)
Serviceability limit state design (deflection)
Cross-section optimization
A wide range of available cross-sections, such as rolled I-sections; channel sections; T-sections; angles; rectangular and circular hollow sections; round bars; symmetrical and asymmetrical, parametric I-, T-, and angle sections; double angles
Clearly arranged input and result windows
Detailed result documentation including references to design equations of the used standard
Various filter and sorting options of results, including result lists by member, cross-sections, and x-location, or by load case, load combination, and result combination
Result table of member slenderness and governing internal forces
There are various options available for beam modeling. Graphical representations facilitate the geometry input. Modifications are updated automatically. Deflection of cantilevers can be set in the serviceability limit state design, independently of the deflection in the span.
The relevant timber grade of the material can be selected from the material library. All material grades specified in EN 1995-1-1: 2004 (EC 5) or DIN 1052:2008-12 and the selected National Annex are available for glulam, hardwood, and softwood timber. Furthermore, it is possible to generate a strength class with user-defined material properties in order to extend the library. Permanent loads (for example, roof structure) can also be entered using the comprehensive and extensible material library.
Generators integrated in RX-TIMBER Purlin allow for convenient generation of various wind and snow load cases. Load cases are displayed graphically and superimposed in automatically generated load combinations according to EN 1990, DIN 1055-100, or DIN 1052. This way, the required input data are reduced to a minimum. However, you can enter load specifications manually as well.