SAP2000 Releases




ETABS 15.1.0 Enhancements


  • A new 2-D modified Darwin-Pecknold concrete model has been added to the nonlinear layered shell. This model represents concrete compression, cracking, and shear behavior under both monotonic and cyclic loading, and accounts for crack rotation.

Nonlinear layered shell results

Layered shell definitions

  • Time-dependent creep, shrinkage, and stiffness behavior has been added for the CEB FIP-2010 and ACI 209R-92 codes and for user-defined curves.

Creep and shrinkage deflection over time

  • Notional size for time-dependent creep and shrinkage behavior is now specified on the section properties rather than at the material level, and can be automatically computed or user-defined.

Section notional size definition


  • Automated seismic lateral loading has been implemented for the Dominican Republic R-001 code.

Dominican Republic seismic loading definition

  • Automated response-spectrum functions have been implemented for the following codes: Costa Rica Seismic code 2010, Ecuador (NEC-SE-DS 2015), Mexico (CFE-93 and CFE-2008), and Peru (NTE E.030 2014).

Ecuador response spectrum definition


  • A new stability check has been added for nonlinear static load cases to report when the structure may have failed under material or geometric nonlinearities that are not obvious from the analysis results.
  • The speed of nonlinear static and nonlinear direct integration time-history analysis has been increased for models containing many linear shell elements.


  • Several enhancements have been implemented for composite beam design to increase productivity and to improve reporting.

Interactive composite beam design



ETABS 2015 Enhancements

Introducing Automation of Performance-Based Design

Performance Based Design (PBD) is a major shift from traditional structural design concepts and represents the future of earthquake engineering. These new procedures help assure that the design will reliably meet a desired level of performance during a given earthquake.

The fundamental component of PBD is nonlinear dynamic analysis where an attempt is made to capture the real behavior of the structure by explicitly modeling and evaluating post-yield ductility and energy dissipation when subjected to earthquake ground motions. ETABS 2015 introduces new special purpose options and algorithms for the practical and efficient application of these procedures.

  • Automated PBD hinges and procedures based upon ASCE 41-13
  • Steel and concrete fiber models for shear walls and columns
  • Stable and Fast Nonlinear Analysis (FNA) implemented for PBD
  • Automated Nonlinear hinges in shear walls based upon user/design reinforcing

Shearwall Fiber Hinge

Wall Reinforcement Definition

  • Steel and concrete material models with performance levels (confined and unconfined)
  • Material strain as performance measure for D/C ratios
  • Automated generalized displacement constraints for strain evaluation

Unconfined and Confined Concrete (compared)

Confined Concrete


  • Several new hysteresis options for nonlinear hinges
  • Options for hysteretic stiffness and strength degradation

Hysteresis Loop Models

  • Output averaging of responses over several time history runs

Response Averaging

  • Quasi-static (Dyanmic) option for Static Pushover analysis of complex models
  • D/C ratio plots and tables for fast performance evaluation

Demand/Capacity Ratios

PBD Results

  • Automated Bucking Restrained Brace (BRB) modeling (Star Seismic)
  • Friction-spring hysteretic damper and Bilinear Maxwell oil damper property

New Graphical User Interface

  • Fast DirectX graphics with full display, drafting and selection capability.
  • Customization of toolbar and shortcut keys.

New Advanced Modeling Options

  • Spectral matching of time history functions
  • Generation of artificial earthquakes using spectral matching
  • Multiple mass sources for nonlinear analysis
  • Modification of geometry by mode shapes for imperfection analysis

Artificial Earthquake Generation

Frequency Content Matching

Mulitple Mass Sources

New International Frame Design Codes

  • Composite Beam Design - Enhanced User’s Interface
  • Composite Frame Design - Canadian CSA S16-14
  • Concrete Frame Design - ACI 318-14, CSA A23.3-14, and KBC 2009
  • Steel Frame Design - CSA S16-14, and KBC 2009

Composite Beam Design

Composite Beam Design Checks

New International Shear Wall Design Codes

  • Design Codes: ACI 318-14, CSA A23.3-14, and KBC 2009

New International Loading Specifications

  • Automated response-spectrum functions for Argentina, Chile, Colombia, Dominican Republic, Ecuador, Guatemala, Mexico, Peru, and Venezuela

Enhanced Application Programming Interface (API)

  • Additional API support for design data and results

Significant enhancements included in ETABS 2013 v13.2.0, v13.2.1, and v13.2.2:

  • The Auto-Relabel All option that was available in ETABS v9 has been restored.
  • Russian material property and section property libraries have been added.
  • ASCE 41-13 guidelines for performance-based design have been implemented for frame hinge definitions, performance-point calculations, and the behavior and acceptance criteria for panel-zones and BRBs (buckling-restrained braces).
  • Masonry is now defined as a separate material rather than a type of concrete material.
  • Multiple named mass-source definitions can now be created and used for different load cases.
  • The Singapore National Annex has been added as an option to the Eurocode 8-2004 response spectrum function.
  • Notional load patterns can now be based on snow loads as well as other gravity loads.
  • User control is now provided for the handling of self-weight in the end offset portions of beam members.
  • The speed of analysis has been increased for most load cases.
  • The iteration strategy for nonlinear static and nonlinear direct-integration time-history load cases has been made more adaptive to typically improve convergence behavior and to reduce the time of analysis.
  • The line-search algorithm is now available for nonlinear static analysis.
  • Steel frame design for the Indian IS 800:2007 code now implements the changes in Amendment Number 1.
  • The display of design input parameters for steel frame design overwrites has been enhanced.
  • Canadian design codes (i.e., CSA A23.3-04 and CSA S16-09) now include snow loads in the default design combinations.
  • Multiple enhancements have been made for composite beam design affecting the control of the design process, the look and functionality of the interactive design form, the format and content of the output, and other improvements.
  • Shear wall design per the Indian IS 456:2000 code now allows separate control in the major and minor directions for enforcing the minimum eccentricity due to slenderness.
  • Several database tables have been added or have had their content expanded, including the listing of object unique names where applicable. 
  • Table set definitions are now saved in the text model file. 



ETABS 2013 13.1.5 Enhancements

Significant enhancements include:

  • The iteration algorithm for nonlinear direct-integration time-history analysis has been enhanced to improve the rate of convergence and to reduce the time of analysis for certain models.



ETABS 2013 13.1.4 Enhancements

Significant enhancements include:

  • The Chinese frame-section databases have been updated with new sections
  • The import from DXF or DWG files has been enhanced so that imported architectural objects are now kept as part of the ETABS model.
  • The import of Revit Structure models from CSiXRevit has been enhanced to handle multi-story sloped columns and vertical planar walls with openings on their edges.
  • The import of 3D DXF or DWG files has been enhanced to automatically generate story levels in ETABS and to divide multi-story walls at story levels.
  • Other minor enhancements



ETABS 2013 13.1.2 and 13.1.3 Enhancements

ETABS 2013 13.1.2 and 13.1.3 Enhancements 

Significant enhancements include:

  • Concrete frame design and shear wall design using the AS 3600-09/NZS 3101-06 codes have been updated for Amendment No. 3 in 2011 affecting the seismic load combinations.
  • Multiple enhancements have been made to shear wall design using the Eurocode 2-2004 code for the uniform-reinforcing and section-designer section options.
  • The output table Modal Direction Factors, primarily used for Chinese design, has been enhanced to include the contribution of all mass in the structure, not just the mass in rigid diaphragm constraints.
  • Database tables can now be exported to an XML file that can be opened by Microsoft Access, allowing the export to Access on machines that do not have it installed.
  • The loads from staged-construction load cases can now be exported to SAFE.
  • Multiple enhancements have been made to the import of .DXF files for floor plans, 3D models, and grid systems.
  • Multiple enhancements have been made to the import and export of IFC 4 files.
  • Multiple enhancements have been made to the import of SDNF files.
  • Multiple enhancements have been made to the import of CIS/2 files.
  • Many additional Open API functions have been implemented.



ETABS 2013 13.1.0 and 13.1.1 Enhancements

Significant enhancements included:

  • Concrete frame design and shear wall design have been added for the Hong Kong CP 2013 code.
  • Steel frame design using the AISC 360-10 code now provides an option to allow Notional Load cases to be included in design combinations with wind, seismic and response spectrum cases.
  • Automated wind loading has been added according to the Australian and New Zealand code AS/NZS 1170.2-2011.
  • Automated wind loading using the diaphragm-extents option for the ASCE 7-02, ASCE 7- 05 and ASCE 7-10 codes that now allows automatic determination of the wind pressure coefficients (windward and leeward) based on the building size.
  • Frame section properties have been enhanced to separate steel shapes from concrete shapes for more detailed handling of rebar.
  • The mass source now allows separate control for the self-mass from elements and added masses, in addition to the use of load patterns. Previously self-mass and added mass were considered together.
  • New database tables have been added that provide pier and spandrel section property information.
  • Customization of the keyboard shortcuts for the various menu items is now available.
  • Multiple enhancements have been made for the import and export of IFC files.
  • Other minor enhancements.



ETABS 2013 Enhancements

ETABS 2013 is the most sophisticated and technologically-advanced software product available to structural engineers today. It defines the future of building design software, setting the stage for unsurpassed capability and efficiency worldwide.

Built on a foundation of more than 40 years of research and innovation, ETABS 2013 sets the gold standard, yet again. Featuring versatile modeling technology, stunning graphics, efficient numerical methods and powerful optimization algorithms for design, ETABS 2013 offers unmatched levels of integration and productivity. It addresses numerous international building codes while producing complete design reports and schematic construction drawings to meet the demanding needs of the modern structural engineering professional.

ETABS 2013 New User Inteface


  • Model Explorer for easy access to all program capabilities
  • Non-modal forms for easy access to select, edit, assign and display
  • Create models by converting AutoCAD Architectural plan to 3D ETABS objects
  • Create models by tracing over AutoCAD plans
  • Ability to add 2D/3D models from templates
  • Live preview of changes while editing or drafting
  • Explicit modeling of curved beams, curved floor edges and curved walls
  • Tracing of building perimeter for quick draw of floor plates
  • Zoom and rotation during model creation
  • Create shearwall and elevator cores parametrically
  • Enhanced editing and selection capabilities
  • Intelligent snaps for easy model creation
  • Introducing multi-tower concepts with tower dependent stories and grids
  • Linear and Nonlinear support properties for point, line and area objects
  • Area load set definitions for load assignments
  • All input/output in user defined mixed units


  • 64 bit Advanced SAPFire Analysis Engine for increased problem size & solution
  • New advanced Sparse Solver
  • New multi-threaded solver for multi-CPU, multi-core systems
  • Analysis recognizes and uses 64 bit processing for enhanced performance
  • Model AliveTM feature for instantly seeing the effects of model revision
  • Enhanced meshing capability with more user control
  • Range combination for enveloping pattern loads
  • Construction sequencing allowing changes of members, loads and sections
  • Time dependent concrete age effects, creep and shrinkage
  • Geometric modification – shape finding for specified final geometry
  • Nonlinear layered shell element for shearwall performance based design
  • Nonlinear element to model Triple Pendulum base isolators
  • Nonlinear element for multi-linear plasticity for modeling soil supports
  • Automated nonlinear fiber hinge model for frame elements
  • Buckling analysis for any applied load from any stressed condition
  • Linear and nonlinear direct integration time history analysis
  • Enhanced section cuts – results for wall, slab or diaphragm design
  • Generalized displacement definitions for deformation measures


  • Automated static lateral seismic loads implemented for codes listed below
  • Automated static lateral wind loads implemented for codes listed below
  • Response Spectrum functions implemented for codes listed below
  • Auto-permutation of directions and eccentricities for static Wind and Seismic
  • Updated generation of lateral Notional loads for design
  • Live Load Reduction factors implemented for codes listed below
  • Enhanced design output
  • Updated Steel frame design including seismic for codes listed below
  • Special considerations for EBF and BRB
  • Updated Concrete frame design including seismic for codes listed below
  • Updated Composite Beam design for codes listed below
  • Added Composite column design for codes listed below
  • Updated Shearwall design including seismic for codes listed below
  • Added Masonry Shearwall Design based on ACI 530-11
  • Updated Steel Joist Design based on SJI 2010
  • Wall reinforcement design optimization
  • Curved shearwall design
  • Drift optimization for steel and concrete frame structures
  • Drift optimization for shearwall structures
  • Added Steel connections design including base plates for AISC 360-10

Graphical Display

  • Increased number of view windows
  • Ray tracing, textures, lights and shadows for true rendering
  • Direct X view window with fly through
  • Display of forces acting on a diaphragm
  • Vector direction plots of maximum forces/stresses in slabs and walls
  • Story load, shear and moment diagrams over building height
  • Print graphics using user specified drawing scale


  • All input, output and design viewable in table format
  • Easy access to corresponding tables from Model Explorer
  • Table display improved, including filters and selection
  • Automated generation of standard reports
  • Fully customizable report generation
  • Report includes tabular and graphical output
  • Named displays and user text can be added to reports
  • Report is viewable on screen
  • Report can create .docx


  • Creation of schematic construction drawings for concrete and steel structures
  • Framing plans and schedules for steel frames
  • Framing plans and schedules for composite floors
  • Reinforcing schedules for concrete beams and columns
  • Reinforcing details for concrete shear wall elevations and cross-sections
  • Customizable detailing rules
  • Customizable drawing sheets with multiple views
  • Automated Bill of Quantities
  • Print or export to AutoCAD

External Interfacing

  • ETABS API for custom programming and interfacing
  • Import/Export of analytical and physical model using IFC2x2, 2X3, 2X4
  • Import/Export model from/to Revit 2011, 2012 and 2013
  • Import/Export model from/to AutoCAD 2011, 2012 and 2013
  • Export graphics to pdf, dxf, bmp, jpeg, giff, png formats


  • Enhanced Online/Offline Help
  • New User’s manuals
  • Updated Analysis manual
  • New Tutorials and Watch and Learn movies
  • New Design manuals
  • New Verification manual

List of Implemented Design Codes

Static lateral seismic load codes:

  1. ASCE 7-10
  2. AS/NZS 1170 2002
  3. GB50011-2010
  4. Eurocode 8 2004
  5. IS 1893 2002
  6. Italian NTC 2008
  7. NBCC 2010
  8. Turkish Seismic Code 2007
  9. NZS 1170 2004
  10. BOCA 96
  11. ASCE 7-02
  12. ASCE 7-05
  13. NBCC 95
  14. NBCC 2005
  15. NEHRP 97
  16. UBC 94
  17. UBC 97
  18. UBC 97 Isolated

Static lateral wind load codes:

  1. ASCE 7-10
  2. AS/NZS 1170 2002
  3. GB50011-2010
  4. Eurocode 8 2004
  5. IS 1893 2002
  6. Italian NTC 2008
  7. NBCC 2010
  8. Turkish Seismic Code 2007
  9. NZS 1170 2004
  10. BOCA 96
  11. ASCE 7-02
  12. ASCE 7-05
  13. NBCC 95
  14. NBCC 2005
  15. NEHRP 97
  16. UBC 94
  17. UBC 97
  18. UBC 97 Isolated

Response Spectrum functions codes:

  1. AS1170-2007
  2. ASCE 7-02
  3. ASCE 7-05
  4. ASCE 7-10
  5. BOCA 96
  6. GB50011-2010
  7. Eurocode 8-2004
  8. IS 1893:2002
  9. Italian NTC 2008
  10. Italian3274
  11. NBCC 2005
  12. NBCC 2010
  13. NBCC95
  14. NEHRP97
  15. NZS1170-2004
  16. NZS 4203
  17. Turkish Seismic Code 2007
  18. UBC 94
  19. UBC 97

Live Load Reduction factors codes:

  1. ASCE 7-95
  2. ASCE 7-05
  3. ASCE 7-10
  4. AS/NZ 1170.1-2002
  5. Chinese GB 50009-2012
  6. Eurocode 1991:2002
  7. Hong Kong COP 2011
  8. Indian IS 875-1987
  9. NBCC95
  10. NBCC2005
  11. NBCC2010
  12. UBC97
  13. User Parameters (per Section 1607.5, UBC 1997)
  14. User Defined Curves (By Tributary Area)
  15. User Defined (By Stories Supported

Steel frame design codes:

  1. AISC 360-10
  2. AISC 360-05
  3. AISC LRFD 93
  4. AISC ASD 89
  5. AS 4100-1998
  6. BS 5950-2000
  7. CSA S16-09
  8. Eurocode 3-2005
  9. IS 800:2007
  10. Italian NTC 2008
  11. NZS 3404:1997
  12. GB50017-2003

Concrete frame design codes:

  1. ACI 318-11
  2. ACI 318-08
  3. ACI 530-11
  4. AS 3600-09
  5. BS8110-97
  6. CSA A23.3-04
  7. Eurocode 2-2004
  8. Hong Kong CP 2004
  9. IS 456:2000
  10. Italian NTC 2008
  11. KCI-1999
  12. Mexican RCDF 2004
  13. NZS 3101:2006
  14. Singapore CP 65:99
  15. TS 500-2000
  16. GB50010-2010

Composite beam design codes:

  1. AISC 360-10
  2. AISC 360-05
  3. BS 5950-1990
  4. CSA S16-09
  5. Eurocode 4-2004
  6. GB50017-2003

Shearwall design codes:

  1. ACI 318-11
  2. ACI 318-08
  3. AS 3600-09
  4. BS 8110-97
  5. CSA A23.3-04
  6. Eurocode 2-2004
  7. Hong Kong CP 2004
  8. IS 456:2000
  9. Mexican RCDF 2004
  10. NZS 3101:2006
  11. Singapore CP 65:99
  12. TS 500-2000
  13. GB50010-2010

Composite Column Design Codes:

  1. AISC 360-10
  2. JGJ3-2010, CECS159:2004, JGJ138-2001