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Modeling in RSTAB 7

Effective tools for entering structures quickly 
Comprehensive cross-section and material libraries facilitate modeling in RSTAB. The databases can be filtered as well as completed by user-defined entries. Special cross-sections generated in SHAPE-MASSIVE and SHAPE-THIN can be imported and calculated as well.
Material library with values relevant for calculation and design
 
Tools like the object snap, user-defined input grids and guidelines help you to graphically enter structural data. DXF files can be imported as line models or used as layers in the background so that you can take advantage of specific snap points directly.
Graphical modeling using guidelines
 
Generating tools facilitate the input of parametric models such as frames, halls, trusses, spiral stairways, arcs or roofs. In addition, many generators allow for the creation of load cases and loadings resulting from weight, snow and wind.
Generating a 3D hall
 
To work with recurring structural systems efficiently, RSTAB provides the parameterized input. This type of input can be combined with a specific guideline technique which can be parameterized as well. By using particular parameters, you can create structures quickly. To adjust a structure to a new situation, simply modify its parameters.
Formula Editor and parameter list
 
Various buttons are available to change perspective and the work plane directly. By zooming, rotating and shifting the structure you can set the appropriate view quickly. Partial views represent specific structural parts clearly. Inactive objects can be made transparent in the background. By selecting structural elements according to special criteria, it possible to group objects easily.
Criteria for special graphical selection
 
Structures are entered as a 1D, 2D or 3D model. As RSTAB follows the general standards for Windows applications you can access the program intuitively, even beginners learn to use it quickly. Member types like truss girders, tension or buckling members make the definition of member properties easier.
General data of a structure
 
The redesigned material library meets all requirements of the latest standards. You can specify nonlinearities not only for members (yielding, tearing, slippage etc.) but also for supports and releases. By using working and stiffness diagrams it is possible to define the properties of supports and releases close to reality.
Definition of a member non-linearity
 
Members can be eccentrically arranged, supported by elastic foundations or defined as rigid connections. Tapers, nonlinear springs with activity zone, friction, and cohesion are possible as well. Take advantage of sets of members to arrange loads on several members at the same time. If nodes are modified, the load ordinates will be adjusted automatically.
Definition of a set of members
 
Two-dimensional loads can be converted to selected members. Further load generators create wind loads according to DIN 1055-4 or EN 1991-1-4, snow loads according to DIN 1055-5 or EN 1991-1-3 and coating loads (ice). Recurring load combinations can be stored as templates.
Generating wind loads according to DIN 1055
 
The numbering of structural objects can be adjusted subsequently. Imperfections can be related to members as well as sets of members. Moreover, RSTAB automatically creates groups of elements (member types, cross-sections etc.) to display them in partial views.
Renumbering nodes and members
 
Members can be extended or divided graphically. The structure check detects input errors like identical nodes or double members quickly and deletes them. Intersecting members can be connected automatically during the input. The measure function allows you to easily determine member lengths and angles.
Extending a member
 
For member and nodal loads various load types are available, such as force, moment, temperature, precamber, prestress, imposed deformation etc. Member loads can be assigned to members, sets of members and member lists. If you use imperfections, RSTAB determines inclinations and precambers according to DIN and Eurocode.
Options to define a member load
 
You can work with the structure in the active rendering. The function "Regenerate Structure" can be useful to correct slight deviations of node coordinates. Furthermore, it is possible to determine the centroid as well as the weight of selected structural objects.
Centroid of selected objects
 
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