Basic Features: 
SAFE is the ultimate tool for designing concrete floor and foundation systems. From framing layout all the way through to detail drawing production, SAFE integrates every aspect of the engineering design process in one easy and intuitive environment. SAFE provides unmatched benefits to the engineer with its truly unique combination of power, comprehensive capabilities, and ease-of-use.</span>

SAFE is the ultimate tool for designing concrete floor and foundation systems. From framing layout all the way through to detail drawing production, SAFE integrates every aspect of the engineering design process in one easy and intuitive environment. SAFE provides unmatched benefits to the engineer with its truly unique combination of power, comprehensive capabilities, and ease-of-use.

Laying out models is quick and efficient with the sophisticated drawing tools, or use one of the import options to bring in data from CAD, spreadsheet, or database programs. Slabs or foundations can be of any shape, and can include edges shaped with circular and spline curves.

Post-tensioning may be included in both slabs and beams to balance a percentage of the self-weight. Suspended slabs can include flat, two-way, waffle, and ribbed framing systems. Models can have columns, braces, walls, and ramps connected from the floors above and below. Walls can be modeled as either straight or curved.

Mats and foundations can include nonlinear uplift from the soil springs, and a nonlinear cracked analysis is available for slabs. Generating pattern surface loads is easily done by SAFE with an automated option. Design strips can be generated by SAFE or drawn in a completely arbitrary manner by the user, with complete control provided for locating and sizing the calculated reinforcement. Finite element design without strips is also available and useful for slabs with complex geometries.

Comprehensive and customizable reports are available for all analysis and design results. Detailed plans, sections, elevations, schedules, and tables may be generated, viewed, and printed from within SAFE or exported to CAD packages.

SAFE provides an immensely capable yet easy-to-use program for structural designers, provideing the only tool necessary for the modeling, analysis, design, and detailing of concrete slab systems and foundations.



What is New in SAFE v12

Computers & Engineering is pleased to announce the release of Computer and Structures, Inc 's SAFE Version 12. This all-new SAFE is the ultimate integrated tool for designing reinforced and post-tensioned concrete floor and foundation systems. This version introduces versatile 3D object based modeling and visualization tools. Charged with the power of SAPFIRE this release redefines standards in practicality and productivity.

From framing layout to detail drawing production, SAFE integrates every aspect of the engineering design process in one easy and intuitive environment. Although its name is unchanged, the all-new SAFE is vastly enhanced and improved in every facet. It provides unmatched benefits with its unprecedented combination of power, functionality and ease-of-use.

SAFE v12 is available as SAFE, which includes comprehensive capabilities for reinforced concrete, or SAFE/PT, which additionally includes all post-tensioning features.

The following is an outline of the capabilities of the new SAFE product.
Please contact for more information.
You can also use the Information Request Form on our internet site.
Click here to see the SAFE brochures.


Project Initialization

  • Project initialization from company standards, existing projects, design codes, materials,  sections, existing models or program defaults
  • Templates for flat slabs, two-way slabs, waffle slabs, ribbed slabs, isolated footings, combined footings, and mats
  • Automated generation of P/T tendon layout for flat slabs


  • Line, area, tendon, design-strip, support, and text drawing tools
  • Quick-draw options for object creation
  • Intelligent snaps, with control on snap length and angle increments
  • Switching between available snaps using N key
  • Graph paper as horizon or background for easy snaps
  • AutoCAD architectural plans can be used as geometric reference for snapping and tracing
  • Architectural units for drafting (Imperial units)
  • Length and angle measurement tools
  • Drafting on user-defined 3D working planes and developed elevations
  • Curve drawing using arc, spline, and multi-segment tools
  • General design-strip drawing as poly-lines with varying width
  • Architectural dimension lines with guidelines linked to points, lines, and edges
  • Cardinal points for offset insertion of beams, columns, and walls
  • On-screen editing of selective data using right-button click
  • Editing with move, nudge, mirror, and replicate
  • Real-time zoom and rotation while drafting

Meshing and Constraints

  • Powerful mesh generation options: rectangular, cookie-cutter, and general
  • New edge constraint connects mismatched slab meshes
  • Meshing allows for moment and shear releases in slab

Model Explorer

  • Easy access to all features of program without using menus
  • Define, duplicate, and modify properties using the tree structure
  • Property- and object-based selection
  • Property assignment by drag-and-drop on model view or within tree
  • Context-sensitive menus on each item in the explorer

Objects and Tools

  • Multiple grid systems including rectangular, cylindrical, and general
  • User Coordinate System (UCS) for on-the-fly system definition
  • Rectangular, circular, T- and L-shaped columns and braces
  • Curved beams and curved slab edges
  • Curved walls and sloped ramps
  • Drop panels and openings (loaded or unloaded)
  • Slab discontinuities due to construction joints or levation changes
  • Arbitrary geometry and loadings, including variations in thickness
  • Horizontal and vertical tendon profiles with interactive graphical editing
  • Multi-segmented design strips including skews and varying widths


  • New enhanced graphical display in plan and 3D
  • Developed elevations for display and drafting
  • Display of deformed shapes and loading diagrams
  • Animation of deformed shapes
  • Slab displacement, moment, shear, stresses, and bearing pressure contours
  • User controlled averaging for contour displays
  • Beam moment and shear diagrams
  • Reaction force diagrams
  • Integrated strip moment and shear diagrams
  • Design displays for design strips
  • Stress-check displays for post tensioning
  • Graphical display of required reinforcing for slabs and beams
  • Extruded 3D views of columns and walls
  • Clear display of wall junctions in 2D and 3D
  • Waffle extrusion with openings
  • Smooth shading for curved line and area objects
  • Continuous rotation with mouse drag
  • Built-in image and video capturing
  • Multiple lighting options and transparency using DirectX


  • Automated design-strip drawing using grids
  • Design-strip width automation
  • Automated generation of pattern loading based on panels
  • Automated generation of tendon-profiles using load balancing
  • Strip-based automatic tendon layouts
  • Automated finite element meshing



  • Both strip-based design and finite element (FEM) based design results are available
  • General 3D analysis model with new fast solvers, including dynamics
  • Orthotropic slab properties
  • Thick plate behavior with shear deformation included
  • Beams with flexural, shear and torsional deformations
  • Stiffness effects of columns, walls and ramps are included
  • Tendon forces converted to loads
  • Nonlinear analysis for long term creep using moment-curvature
  • Nonlinear analysis for cracked conditions
  • Automatic analysis for secondary post-tensioning stresses for design
  • Nonlinear analysis for no-tension soil supports with uplift
  • Tension-only spring for modeling tension anchor
  • Automated double-valued range combinations for pattern loads
  • Multi-processor, multi-threading 64-bit solvers with unmatched solution capacity


  • Area, line and point loading
  • Loads can vary linearly in one or two directions
  • Automated prestress loss calculations
  • Lateral loads (wind and seismic) can be considered in models
  • Response-spectrum analysis based on loads and modes imported from ETABS®
  • Unlimited load cases and combinations



  • Import of model from ETABS® Version 9, including response-spectrum
  • Geometry, tendons, and reinforcing imported from or exported to AutoCAD


  • Interactive database editing
  • Database tables for all model, analysis, and design information
  • Database tables greatly enhanced with many user controls
  • Import and export tables using native Excel, Access, or text files
  • Printing of database tables


  • Slab and beam design for the latest American, Australian, British, Canadian, Chinese, European, Hong Kong , Indian, New Zealand, and Singapore codes
  • Design considers post-tensioning and lateral loads
  • Design done on new, general strip definitions
  • Serviceability and load-transfer design checks for post-tensioning
  • Post-tensioning strength checks including secondary locked-in stresses
  • New one-way shear design and updated punching-shear design
  • Design of punching-shear reinforcement (stud rails)


  • Fully automated detailing of slabs, beams, mats, and footings
  • Detailer includes post-tensioning, general design strips, slab, and beam offsets
  • Detailer is fully integrated into the main program and accessible from model explorer
  • Fully customizable detailing rules to control bar sizes, spacing, dimensioning, scaling, etc.
  • Separate display of object-level detailing and drawings containing object views
  • Detailed object views includes plans, elevations, sections, rebar tables, rebar schedules and bill of quantities
  • Fully customizable drawing sheets with multiple views
  • Automatic synchronization of edited drawings with modified models
  • Option to detail individual objects or groups of similar objects
  • User-defined section cuts on slabs, beams, and mats
  • Rebar editing on beams, slabs, and mats with automated updating of related views
  • Full editing of text and annotations for clearer detailing
  • Complete control on scale, text size, line type, line thickness, color, etc.
  • Fully customizable labeling of objects and views
  • Export of detailing output to AutoCAD
  • Insertion of external images and graphics on drawing sheets
  • Import of AutoCAD objects onto drawing sheets
  • Direct printing of selected views or drawing sheets

Output and Display


  • Automated generation of standard reports
  • Fully customizable report generation
  • Tabular and graphical representation of the model and results
  • Detailed object views and custom displays can be added to reports
  • Reporting in user-defined mixed units
  • Report formatting and layout based on user-defined setting


SAFE is available in two different levels: SAFE and SAFE P/T. All features are available in both levels except those specific to the Post-Tensioned level, designated with a (PT) after the feature name.

• Object Based Graphical Interface
• Model Explorer for Easy Access to Program Features
• Model Templates for Typical Slabs and Foundations
• Arbitrary Geometry and Loadings, including Variations in Thickness
• Automated Mesh Generation
• Slab, Beam, Column/Brace, and Wall/Ramp Objects
• Slab/Foundation Area Objects with Thick Plate
• Automated Soil Spring Supports
• Editing with Move, Mirror, Nudge, and Replicate
• Accurate Dimensioning with Guidelines
• Intelligent Snaps and Architectural Dimensions
• Quick Draw Options for Object Creation
• Selective Data Input On-Screen with Right-Button Click
• Area, Line, and Point Loading
• Post-Tensioning with Automated Load Balancing (PT)
• Powerful Grouping and Selection Options
• User Controlled General Design Strips
• Enhanced Graphical Display for Easy Model Checking

• Slabs and Foundations Modeled with Area Objects
• Beams Drawn as Lines – Automatically Meshed into Elements
• Orthotropic Bending with Thick Plate Behavior
• Beams with Flexural, Shear, and Torsional Deformations
• Column and Wall Stiffness Above and Below Slab
• Thickness Variations, Drop Panels, and Openings
• Nonlinear Cracked Analysis
• Nonlinear Long-Term Creep and Shrinkage
• Nonlinear No-Tension Soil Model
• Slab Discontinuities Due to Construction Joints or Elevation Changes
• Automatic Meshing with Constraings at Mismatched Slab Meshes
• Variations in Soil Modulus of Subgrade Reaction
• Multiple Load Cases and Combinations

• Slab and Beam Concrete Design for American, Australian, British,   Canadian, Chinese, European, Hong Kong, Indian, New Zealand and   Singapore Codes
• Both Strip Based and Finite Element Based Design
• Punching Shears Checks and Shear Stud Design
• Post-Tensioning Strength and Serviceability Design (PT)
• Twisting Moments Included
• Automatic T-Beam Effects
• Design Based on General Design Strips

• Automatic Generation of Default Views and Drawings
• Plans, Elevations, Sections, Rebar Tables, Schedules, and Bill of   Quantities
• Customizable Drawing Sheets with Multiple Views
• Edit Reinforcement, Text, and Annotations
• Synchronization After Model Changes
• Export Drawings to DXF or AutoCAD DWG
• Plot Full Size Drawings

• 3D Graphical Displays
• Deformed Shapes
• Loading Diagrams
• Animation of Deformed Shapes
• Slab Displacement, Moment, Shear, and Bearing Pressure Contours
• User Controlled Stress Averaging for Contours
• Beam Moment, Shear, and Torsion Diagrams
• Post-Tensioning Stress Diagrams (PT)
• Tabular Display of Model Input & Output
• Reaction Force Diagrams
• Integrated Strip Moment and Shear Diagrams
• Graphical Display of Required Reinforcing for Slabs and Beams
• Rendered View with Lighting, Textures, and Shadows
• Rendered View of Rebar Cages