22.0.0 | 22.1.0

Released 13-Jul-2024

Release Notes



Serviceability assessment of steel-framed floor systems subjected to walking vibrations according to AISC Design Guide 11, Chapter 7 has been added.



An enhancement was made to show the effects of joint offset assignments for slabs (when shown in an extruded view). Joint offsets can be assigned using the command Assign > Shell > Insertion Point. The effect of the cardinal point was previously included in extruded views, but not the additional joint offsets.

Structural Model


Conversion of curved concrete beams to shell slabs is now available. Previously, only straight beams could be converted.



Composite beam design per AISC 360-22 design code has been added.

Material Libraries & Databases


New frame section libraries have been added conforming to AISC Shapes Database v16.0.

Application Programming Interface (API)


The SAFE API has been updated to support .NET 8.

Bug Fixes


Issues reported by users have been corrected.


Released 30-Nov-2023

Release Notes

User Interface


An enhancement has been implemented to allow drawing a linear tendon throughout between two points. Two options are now available in the Drawing Properties window for the vertical profile when drawing a tendon: Linear Throughout and Program Determined (current default).

Cloud Sign-in Licensing


Cloud Sign-in licensing is now available

  1. • Access CSI software using secure user credentials — no more activation keys
  2. • Access licenses anywhere with internet access
  3. • Option to create License Groups to manage who has access to your licenses
  4. • Option to remotely terminate an active license session
  5. • Option to federate your identity provider (IdP), allowing users to user their familiar company credentials instead
Cloud Sign-in Licensing Details

Bug Fixes


Issues reported by users have been corrected.


Released 14-Aug-2023

Release Notes

Data Files


JGJ/T 483-2020 high-strength steel materials have been added to the Chinese material library.

Drafting and Editing


An enhancement has been implemented to allow drawing of objects in the graphical user interface using a snap-only option. When enabled, objects may be drawn only if the cursor snaps to an item, which can be used in combination with various snap options to accurately control placement of objects.

Output and Display


An enhancement has been made to speed up display of strip forces, strip-force tables, and concrete slab design on models with many load combinations.

Bug Fixes


Issues reported by users have been corrected.


Released 6-Apr-2023

Release Notes



Detailing of concrete and steel structures, as well as the production and management of schematic design drawings, is now available from a new Detailing menu inside SAFE.


Detailed reinforcement from beams and slabs can now be exported from SAFE to Autodesk® Revit® through the CSiXRevitTM 2023 plugin to Revit 2023.



Tributary PT tendons are now accounted for in finite element-based design of slabs and cracked-slab deflection analysis (short- and long-term).

Output and Display


Cracked-section modifiers for beam and floor objects are now included in the database tables.

Bug Fixes


Issues reported by users have been corrected.


Released 1-Jul-2022

Release Notes



The concrete code “CSA A23.3-19” has been added for reinforced-concrete and post-tensioned slab design.


Reinforced-concrete and post-tensioned slab design have been updated for the NZS 3101-06 code to accommodate Amendments 1 to 3.


A new concrete slab design preference is available for the "ACI 318-19" code to optionally set the depth-dependent shear-strength reduction factor, Lambda_s, to 1.0 for mats and footings per ACI 318-19


Concrete frame design now reports and displays the longitudinal rebar required for detailing due to torsion and shear, in addition to the flexural rebar previously reported for detailing purposes.

Structural Model


A built-in material library has been added for Canada with steel materials per the CSA G40.20-13/G40.21-13 standard, concrete materials per the CSA A23.3 standard, and rebar materials per the CSA G30.18:21 standard.

Output and Display


Integrated wall reactions are now available for graphical display and in a new database table.


The display of tendon control points has been enhanced to show all control points within each span, and to display the vertical offset distance of tendon control points from the bottom of the slab (or drop, if present).


Soil pressures are now available in the database tables on a joint-by-joint basis in addition to the enveloped values previously available on a slab-panel basis.

Application Programming Interface (API)


The following enhancements have been made to the Application Programming Interface (API):

  • • The client can attach to any running instance of SAFE given its process ID.
  • • A new command "Set as active instance for API" has been added to the Tools menu.
  • • A new interface cPluginContract has been added to simplify plugin development.
  • • Speed has been improved for external .NET clients that call the API by chaining properties and methods in deeply nested loops.


Released 31-Mar-2022

Release Notes


20.2.0_SAF_CSA S16-19_composite_design

The CSA S16-19 code has been added for composite beam design.

Structural Model


The age of concrete at which loading is applied can now be specified for long-term cracked-section analysis. Previously, the age at loading was assumed to be 7 days.



Analysis and design will now be automatically rerun if cracked short-term or long-term deflection analysis is requested and a previous design to determine the amount of required rebar is not available.



Extruded views have been enhanced to show joint-offset overwrites for shell area objects.


Released 4-Feb-2022

Release Notes

Structural Model


Tendon materials are now available for the Chinese GB 50010-2010 standard.



Detailing is now available for composite-beam floors. Detailing can be viewed and edited within the program, and the results used for further design checks.


Concrete slab and beam detailing is enhanced to include PT tendon profiles. This includes showing tendons and jacks in 3D views of slab reinforcement and the tendon profiles in beam elevations and sections.



The detailing Bill of Quantities (BOQ) table now include the addition of quantities for steel beams and tendons.


General grid systems are now available in frame layout and rebar drawings for Detailling.


Waffle-slab and ribbed-slab detailing is enhanced to include the handling of reinforcement in waffles and ribs for small web widths, and the addition of a new rib-reinforcement view.

Drafting and Editing


On-screen measuring tools are now available to measure line lengths, the angles between two lines, and the areas and perimeters of closed polygons.


On-screen editing of Rebar Objects can now be made/accomplished/done using the reshaping tool.

User Interface


Additional tool buttons for the main tool bar are now available for quick access to information on concrete slab design, concrete beam design, composite beam design, punching shear design, and crack width display.

Import and Export


The import of DXF files as floor plans has been implemented with the option to import joint locations from the file.


Released 30-Sep-2021

Release Notes

CSI Spotlight


Watch our Spotlight Videos to learn more about the latest enhancements in SAFE v20.0.0.

Part 1 - Modeling and GUI

Part 2 - Modeling, Analysis and API

Part 3 - Design

Part 4 - Output and Reporting

User Interface


DirectX graphics have been enhanced for quality and speed. Lightning-fast DirectX graphics with full 2D and 3D drafting and selection capability provide faster and clearer rendering.



Slab panels are a new entity that can be automatically generated using grids or support lines, or they can be user-drawn. They overlay the floor system and can be used to apply live load for load-pattern analysis, and they can also be used to report mid-panel displacements and soil-pressure summaries.


Support lines have been added for faster modeling of design strips and tendon layout. They can be drawn and edited on-screen as well as generated automatically along grid lines.


The PT tendon vertical-profile display has been expanded to show all editable information related to the tendon profile, geometry, loads, losses, and load balancing in a single location.


A general mesher has been added which primarily favors quadrilateral elements but transitions to triangular elements as needed for sharp corners and irregular geometry. The rectangular mesher is still available as an option.


Uniform area loads in multiple load patterns can now be applied as a single assignment using load sets.


A new insertion-point assignment is available that allows more control over the vertical and horizontal alignment of slab objects.



Models can now be created by converting AutoCAD®Architectural Plan elements into SAFE objects or by tracing over AutoCAD® plans for more control.


Live previews of changes are now displayed while editing and drafting model objects.


Enhancements have been made to simplify the drawing and editing of user-specified rebar. Bar spacing and the vertical offset from a datum can now be viewed and displayed in the model.



Multiple processors are now supported for analysis, design, and the recovery of results in tables. Load cases can be run in parallel based on the number of physical cores available.


Material definition now includes creep and shrinkage models, which can be used for long-term crack-deflection analysis. Models based on the following codes are available: ACI 209R-92, AS 3600-2009, CEB-FIP 90, CEB-FIP 2010, Eurocode 2-2004, GL 2000, NZS 3101-2006.


Long-term cracked deflection can now be defined at a specified material age or at a specified creep coefficient and shrinkage strain.


Control is now available over which load cases to run for analysis, which can save time when many nonlinear load cases are present.



Composite-beam design is now available, in addition to the existing concrete-slab design, to support more floor types. Horizontal steel beams can be drawn and assigned for design. Beams with web openings, including castellated and cellular beams, can be designed. Design can be performed on the model as a whole or interactively on individual members. Design codes supported include: AISC 360-16, AISC 360-10, AISC 360-05, BS5950-1990, Chinese 2010, CSA S16-14, and Eurocode 4-2004.


The ACI 318-19 and AS 3600-2018 codes have been added for reinforced concrete and post-tensioned (PT) design.

Output and Display


Section cuts can now be graphically drawn to quickly display the resultant forces and moments summed over the cut objects.


Database tables can now be easily accessed for display from the Model Explorer.


Filtering and sorting are now available for displayed database tables by right-clicking in the table column headers.


Professional-quality design reports are generated automatically along with the option for generating fully customizable reports.

Import and Export


Slab and beam reinforcement detailing can now be exported to Revit® through CSiXRevit™.



Application Programming Interface (API)


The API allows external client applications to run SAFE or attach to existing instances of SAFE to perform operations like opening and saving models, creating and modifying models, running analysis and design, and extracting results. Typical applications include specialized templates, parameter studies, and design post-processing. Client applications can be written in several different programming languages, and can connect to SAFE using .NET or COM.

Cloud Licensing


Cloud-based licensing is now standard for SAFE.

  1. • Cloud-based server requires no setup
  2. • Access licenses outside of company networks and VPNs
  3. • Share licenses between users (non-simultaneous)
  4. • Check-out a license to work offline
Cloud FAQ