ETABS 2013 INTEGRATED ANALYSIS, DESIGN AND DRAFTING OF BUILDING SYSTEMS
One Window, Many Views
ETABS 2013 offers a single user interface to perform: Modeling, Analysis, Design, Detailing, and Reporting. A new model explorer is available for quick access to objects, properties, and forms.
Users now have no limit on the the number of model windows and views for model manipulation and data views.
Hardware Accelerated Graphics
Direct X graphics with hardware accelerated graphics allow for navigation of models with fly-throughs and fast rotations.
ETABS 2013 has a wide selection of templates for quickly starting a new model. At this model template stage, the user has the ability to define grid and grid spacing, the number of stories, the default structural system sections, default slab and drop panel sections, and uniform loads (specifically dead and live loads).
View and manipulate analytical model with great precision. Plans and Elevation views automatically generated at every grid line. Easily define custom views and cutting planes to view and manipulate complex geometry with ease.
Analytical model views display the finite element model of the structure which is made up of the the connectivity of the joints, frames, and shells and defined meshing.
In ETABS, grids can be defined as cartesian, cylindrical, or general free-form grid systems. There is no limit to the number of grid systems in a model, and they can be rotated in any direction or placed at any origin within the model.
Many drawing and drafting utilities are built into ETABS to enhance the engineer's modeling experience. Users will find that many of the common industry standard shortcuts and controls are also available in ETABS.
Intelligent snaps make model generation simple by automatically detecting intersections, extensions, parallels, and perpendiculars. Drawing helper tools will show physical extrusions even when in analytical draw mode.
Plans and Elevations
Plan and elevation views are automatically generated at every grid line to allow for quick navigation of the model. Users can create their own elevation sections by using our Developed Elevation feature.
When in a 2D view, see arrow buttons to quickly move from grid line by grid line. A transparent plane will be show in the 3D view to show you exactly which elevation or plane you are looking at in the model.
Interactive Table Data Editing
ETABS data can be viewed and edited using on-screen dockable tables. This is quite useful for defining a model from spreadsheets or viewing analysis or design results.
Engineers have many options when it comes to mesh generation in ETABS. Simply select the area object and then select the rules for the automatic mesh generator to use.
Object meshing is automated based on maximum element size. The mesh will always be parallel and perpendicular to longest edge, grid system, or area local axes and aims to maintain good element aspect ratios.
Multi-tower buildings can now easily be modeled by using the new tower feature. Defining towers in an ETABS model allows users to define unique story levels and grid systems for different building structures within the same ETABS model. For example, ETABS models can share a podium level and then separate into towers on higher floors.
Beams, Columns, Braces
In ETABS 2013, beams, columns, and braces are frame elements that can be straight or curved. They are used in a general, three-dimensional, beam-column formulation which includes the effects of biaxial bending, torsion, axial deformation, and biaxial shear deformations. Intermediate joints will automatically be generated where other members intersect with the frame to ensure finite element connectivity.
ETABS has a built-in library of standard concrete, steel, and composite section properties of both US and International Standard sections. Even non-prismatic and built up steel sections can be easily defined. Use our Section Designer for more complex sections.
Shells (Walls, Floors, Ramps)
Shell elements are used to model walls, floors, and ramps. A layered shell element has been added in ETABS 2013 that considers mixed material composite behavior, as well as nonlinear material behavior options for each layer based on stress-strain, with shearing behavior considered for rebar layered shell sections.
Customizable wall configuration templates help you define your wall section properties with ease by drawing multilevel wall configurations in a single click. When you draw walls using the wall stack, all pier and spandrel labeling is automatically assigned.
ETABS 2013 has a many different link elements available for users to accurately represent the behavior of a structure. Link elements types include Linear, Multi-linear Elastic, Multi-linear Plastic, Gaps, Hooks, Dampers, Friction Isolators, Rubber Isolators, T/C Isolators, and Triple Pendulum Isolators.
Users can create and apply hinge properties to perform pushover analyses in ETABS 2013. Nonlinear material behavior in frame elements (beam/column/brace) can be modeled using fiber hinges. Mixed materials, like reinforced concrete, and complex shapes can be represented. Yielding, cracking, and hysteresis behavior can all be captured using hinge properties.
Rigid, semi-rigid, and flexible floor diaphragms can be defined in ETABS. Diaphragms can be assigned to joint objects or area objects.
Automated Code Based Loading
ETABS will automatically generate and apply seismic and wind loads based on various domestic and international codes.
Supported codes included in ETABS
- ASCE 7-10
- ASCE 7-05
- ASCE 7-02
- AS/NZS 1170 2002
- Eurocode 8 2004
- IS 1893 2002
- Italian NTC 2008
- NBCC 2010
- NBCC 95
- NBCC 2005
- Turkish Seismic Code 2007
- NZS 1170 2004
- BOCA 96
- NEHRP 97
- UBC 94
- UBC 97
- UBC 97 Isolated
Point, Line, Area, and Thermal Loads
ETABS is robust when it comes to assigned loads. Uniform or non-uniform surface loads can be assigned in any direction, not just gravity. Uniform or trapezoidal loads can be defined on lines in any direction. Thermal load can be assigned to joints, lines, and areas.
Automatically add analytical cladding to entire structure for loading purposes.
Live Load Reduction
Live-load-reduction factors may be assigned on a member-by-member basis. This may be done either within the graphical user interface, once design is complete, by right-clicking on a member, or it may be done using interactive database editing.
Supported codes and user defined types included in ETABS
- ASCE 7-95
- ASCE 7-05
- ASCE 7-10
- AS/NZ 1170.1-2002
- Chinese GB 50009-2012
- Eurocode 1991:2002
- Hong Kong COP 2011
- IS 875-1987
- User Parameters (per Section 1607.5, UBC 1997)
- User Defined Curves (By Tributary Area)
- User Defined (By Stories Supported)
CSI Solvers have been tried and tested by the industry for over 35 years. The SAPFire Analysis Engine can support multiple 64-bit solvers for analysis optimization and perform both Eigen Analysis and Ritz Analysis.
ETABS dynamic analysis capabilities include the calculation of vibration modes using Ritz or Eigen vectors, response-spectrum analysis, and time-history analysis for both linear and nonlinear behavior.
Eigen-vector modal analysis finds the natural vibration modes of the structure, which can be used for understanding the behavior of the structure, and also as the basis for modal superposition in response-spectrum and modal time-history load cases. Ritz-vector modal analysis finds the optimum modes for capturing structural behavior in response-spectrum and modal time-history load cases, and is more efficient for this purpose than Eigen-vector analysis.
P-delta analysis captures the softening effect of compression and the stiffening effect of tension. A single P-delta analysis under gravity and sustained loads can be used to modify the stiffness for linear load cases, which can later be superposed. Alternatively, each combination of loads can be analyzed for full nonlinear P-delta effects. P-delta effects are included for all elements and are seamlessly integrated into analysis and design.
Linear (bifurcation) buckling modes of a structure can be found under any set of loads. Buckling can be calculated from a nonlinear or staged-construction state. Full nonlinear buckling analysis is also available considering P-delta or large deflections effects. Snap-through buckling behavior can be captured using static analysis with displacement control. Dynamic analysis can be used for modeling more complex buckling, such as follower-load problems.
Pushover analysis features in ETABS include the implementation of FEMA 356 and the hinge and fiber hinge option based on stress-strain. The nonlinear layered shell element enables users to consider plastic behavior of concrete shear walls, slabs, steel plates, and other area finite elements in the pushover analysis. Force-Deformation relations are defined for steel and concrete hinges.
Incremental construction sequence modeling and loadings can be modeled in ETABS. Nonlinear effects can be considered such as large deflections, yielding, and gap opening and closing. Time-dependent creep, shrinkage, and strength-change effects will all so be taken into account.
Users can add arbitrary loading sequences at various points to simulate real life construction conditions.
Load Cases and Combinations
ETABS allows for an unlimited number of load cases and combinations. Load combination types include linear additive, envelope (min/max), absolute add, SRSS, and range combinations. Combination components can include other combinations.
For small to medium sized structures, analysis can be performed on the fly as you build and modify the model. For each change you make to the geometry, properties, or loading, the structure instantly responds with the new deformed shape, moment diagram, or any other plot of results. It’s like working with a live model, and it is a very powerful tool for conceptual design and for testing "what-if" scenarios.
Fully integrated steel frame design includes member size optimization and implementation of design codes. ETABS allows users to interactively view design results at any frame member, change the parameters or section properties, and display the updated member results.
Fully integrated concrete frame design in ETABS includes: required area of steel calculations, auto selection lists for new member sizing, implementation of design codes, interactive design and review, and comprehensive overwrite capabilities.
Composite Beam and Column
Fully integrated comprehensive composite beam design includes member sizing using auto-select lists, calculation of camber and stud requirements, implementation of US and many international design codes, and comprehensive overwrite capabilities.
Fully integrated comprehensive shear wall design includes calculation of reinforcing requirements for both overturning and shear, demand/capacity calculations of defined reinforcement, US and international design codes, and comprehensive overwrite capabilities.
Fully integrated comprehensive steel joist design includes member sizing using auto-select lists, and overwrite capabilities.
Steel Connection and Base Plate
ETABS uses forces at joints and design preferences to determine connection design in terms of D/C ratio for each load combination. Design is based on load combinations for each design code supported, as well as a set of user-specified loading combinations.
OUTPUT AND DISPLAY
ETABS gives users full control of the units used with all model data and displays results in the units desired. Whether architectural units or analysis results units, you can have any combination of units throughout your model.
Users can display deformed geometry based on any load or combination of loads, as well as animations of modes.
Shell Force and Stress Contours
Display of shell forces and stress contours can be based on load case, load combination, or modal case. Users can show resultant forces and shell stresses on any component in any direction. Control the stress contour appearance by showing undeformed, deformed, or extruded shapes, with or without loading values.
Support reactions can be displayed graphically on the model either as vectors or as tabular plots for selected reaction components.
ETABS has the ability to display and dock tables for all input data, analysis results, and design results. Organize the tables in any way you like by dragging and dropping them to any location of the ETABS environment. Tables support sort, cut, copy, and paste for use in other programs. Print or save tabular data to Access, Excel, Word, HTML, or TXT.
Use graphical section cut definitions to see the resultant forces and moments across any location in the structure. A section cut can have any shape and can be used to compute story shears, connecting forces, design forces in shear walls, and for many other purposes. Section cut results can be obtained for all types of load cases and combinations.
ETABS has the ability to generate video (.avi) files to visually display a set of analysis results that vary over a particular time period, such as in a time history analysis.
Rendered views can used to create images to include in client reports. ETABS has multiple lighting options, shadows, and texture options to create life-like images of your structures.
ETABS has complete drawing generation capabilities incorporated into all levels. The detailing window is like any other ETABS model window.
Components views are the basic building blocks for drawings that can be dragged and dropped onto drawing sheets. Detailing components include: concrete beams, columns and walls, steel framing, beam schedules, column schedules, and connections.
ETABS will perform comprehensive steel detailing and scheduling for floor framing, beams, columns, and connections. Users can control detailing preferences for each type of steel detailing component.
Concrete Reinforcement Detailing
ETABS detailing will perform complete reinforcement detailing for concrete frame and shear walls based on ETABS concrete frame and concrete shear wall design results. Users have full control over rebar sizes to be used in detailing.
Detailing Section Cuts
While in the detailer, create section cut through slabs, beams, and mats to see instant cross sections of the part of the drawing. Users define orientation and length of the section cut and then use the section cut as a component view in another drawing.
Print and Export Drawings
Print drawings and views directly to a printer or plotter, or export drawings and views to DXF or DWG format to be opened in AutoCAD or other CAD software.
The report generator features include an indexed table of contents, model definition information, and analysis and design results in tabulated format. Reports are viewable within ETABS 2013 with live document navigation connected to the Model Explorer and directly exportable to Microsoft Word.
Section Designer is a utility that is built into ETABS. It allows users the ability to create specialized sections of any arbitrary shape and material, including rebar layout. All section properties, biaxial interaction diagrams, and moment curvature diagrams are automatically calculated.
IMPORT AND EXPORT
ETABS supports many industry standards for importing and exporting data. Autodesk Revit Structure, AutoCAD (DXF/DWG), CIS/2, IFC, and SDNF are all supported. ETABS also supports exporting of a model to an Microsoft Access database.