Current Version: 17.0.2

What’s New in Version 17

RISA-3D v17 includes partial member end releases, strap/hold down design for wood shear walls, updates to AISC steel design and NDS wood design, as well as much more.
See All New Features

The Most Popular Structural Engineering Software in the U.S.

Fast, Accurate, Productive — just a few ways engineers describe RISA-3D. Easily the most popular general 3D analysis/design software available, our intuitive interface and familiar spreadsheets help you solve your next problem in minutes, not hours.

Packed with the most current steel, concrete, cold-formed steel, masonry, aluminum and timber design codes, RISA-3D gives you the tools to tackle multi-material projects with confidence.

RISA-3D also integrates seamlessly with RISAFloor and RISAFoundation, including links to top detailing, drafting, and BIM packages for a complete building design solution.

RISA-3D Features

RISA-3D is popular among structural engineers for many reasons, but one in particular stands out: ease of use. We designed our premier product with the daily use of structural engineering professionals in mind.

User friendliness combined with advanced analysis capabilities make this industry standard software a very powerful tool for the analysis and optimization of all types of structures and all common structural materials, including steel, concrete, wood, aluminum and masonry. It’s a tool no structural engineer should be without!

No. 1 Software in the U.S.

A 2013 survey showed that RISA-3D was once again the most widely used software by engineers in the U.S.

State-of-the-Art Modeling Interface

Our multiple view interface, advanced selection and drawing tools, and spreadsheet features continue to be the best in the business.

Powerful Analysis and Design

With RISA-3D you can rapidly design buildings, bridges, racks, tanks, crane rails, stadiums, arenas, culverts, all types of industrial and commercial structures and everything in between.

Seamless Integration with RISAFloor, RISAFoundation & RISAConnection

RISA-3D's full integration within the RISA Building System enables you to manage all aspects of your project within the same environment.

Top-notch Presentation of Results

Both graphical and numerical visualization capabilities let you get presentation quality results quickly and easily.

Quality & Support

The support you receive from our staff of professional engineers is second-to-none. Our clients know they can rely on RISA for the dependable software and quality support they deserve.

RISA-3D v17 Specifications

Modeling Features

  • Comprehensive CAD-like drawing/editing environment: draw, generate, modify and load elements as well as snap, move, rotate, copy, mirror, scale, split, merge, mesh, delete, apply, trim, extend, etc.
  • Versatile drawing grids (orthogonal, radial, skewed, DXF underlay)
  • Universal snaps and object snaps allow drawing without grids
  • Powerful graphic select/unselect tools including box, line, polygon, invert, criteria, spreadsheet based, save/recall selections with locking
  • True spreadsheet editing with cut, paste, fill, math, sort, find, etc.
  • Dynamic synchronization between spreadsheets and graphics
  • Open multiple spreadsheets simultaneously
  • Constant in-stream error checking and data validation
  • Unlimited undo/redo capability, automatic timed backup
  • Generation templates for grids, disks, cylinders, cones, arcs, trusses, tanks, hydrostatic loads, geodesic domes, etc.
  • Support for all units systems & conversions at any time
  • Automatic interaction with RISASection custom shape libraries
  • Steel Shapes: AISC, Historic, Australian, British, Canadian, Chilean, Chinese, European, Indian, Mexican
  • Light Gage Shapes: AISI, SSMA, Dale/Incor, Dietrich, Marino\WARE
  • Import DXF, RISA-2D, STAAD and CIS/2 files
  • Export DXF, SDNF and CIS/2 files
  • Robust two-way link with Revit Structure 2019
  • Link with Tekla Structures 2018

Analysis Features

  • Analysis of 1D members (beams, columns, braces, etc.) using Finite Element Method
  • Analysis of 2D elements (plates, walls) using Finite Element Method
  • Analysis of 3D elements (solids) using Finite Element Method
  • Partial fixity member end releases using rotational spring constants
  • Time History Analysis
  • Accelerated true sparse solver for static analysis
  • Flexible modeling of P-Delta effects
  • Accelerated Sparse Lanczos dynamics solver, very fast and robust
  • Multiple simultaneous dynamic and response spectra analysis using Gupta, CQC or SRSS with automatic calc of scaling factors
  • Automatic inclusion of mass offset (5% or user defined) for dynamics when integrated with RISAFloor
  • Ritz vector dynamic solver
  • True physical member modeling (members are aware of interior joints)
  • Plate/shell elements with plane stress  only option
  • 8 node solid elements
  • High end mesh generation — draw a polygon with any number of sides to create a mesh of well formed quadrilateral (NO triangular) elements
  • Automatic rigid diaphragm modeling with detachable joints
  • Area loads with one-way or two-way distributions with optional “blow through” distribution for loading open structures
  • Plate thermal loads
  • Simultaneous moving loads, AASHTO/custom for bridges, cranes…
  • Torsional warping calculations for stiffness, stress and design of hot rolled steel
  • Member end releases, rigid end offsets, analysis offsets
  • Enforced joint displacements
  • One Way members, for tension only bracing, slipping, etc.
  • One Way springs, for modeling soils and other effects
  • Euler members: Compression up to buckling load, then disable
  • Stress calculations on any arbitrary shape
  • Inactivate members, plates, solids and diaphragms without deleting them
  • Story drift calculations provide relative drift and ratio to height
  • Automatic self-weight calculations for members, plates and solids

Graphics Features

  • Unlimited simultaneous model view windows
  • “True to scale” rendering with translucency, even when drawing
  • High-speed redraw algorithm for instant refreshing
  • Dynamically zoom, pan, rotate, scroll, snap views
  • Font and color control
  • Saved views to quickly restore frequent or desired views
  • Rendered or wire-frame animations of deflected model and mode shapes
  • Animation of moving loads with speed control
  • Distance tool for measuring between points
  • Force/moment summation about any arbitrary cut line
  • High quality customizable graphics printing

Design Codes

  • Steel Design Codes: AISC 360-16/10/05: ASD & LRFD, AISC 2nd & 3rd: LRFD, AISC 9th: ASD, CSA S16-14/09/05/01/CSA-S16.1-94, BS 5950-1: 2000, EN 1993-1-1:2014/2005, ENV 1993-1-1:1992, IS 800: 2007/1998, AS 4100-1998, NZS 3404: 1997
  • Seismic design per AISC 341-10/05, including 358 prequalified connections
  • Concrete Design Codes: ACI 318-14/11/08/05/02/99, CSA A23.3-14/04/94, NTC-DF 2004, BS 8110-1: 1997, BS EN 1992-1-1: 2004+A1: 2014/2004, EN 1992-1-1:1992, IS 456: 2000, AS 3600-2001, NZS 3101: 1995, SBC 304-2007
  • Cold Formed Steel Design Codes: AISI S100-16/12/10/07: ASD & LRFD, AISI NAS-04/01: ASD & LRFD, AISI 1999: ASD & LRFD, CSA S136-16/12/10/07/04/01: LSD, CANACERO 16: ASD, CANACERO 12/10/07/04/01: ASD & LRFD
  • Aluminum Design Codes: AA ADM1-15/10: ASD & LRFD, AA ADM1-05: ASD
  • Wood Design Codes: AWC NDS-18/15/12: ASD, AF&PA NDS-08/05/01/97/91: ASD, CSA 086-14/09 Ultimate, Structural Composite Lumber, multi-ply, full sawn, Glulam, shear walls
  • Masonry Design Codes: TMS 402-16: ASD & Strength, ACI 530-13/11/08/05/02: ASD & Strength, ACI 530-99: ASD, UBC 1997: ASD & Strength
  • Stainless Steel Design Code: AISC 360-10: ASD & LRFD
  • Wind loads are generated automatically (ASCE 7-16/10/05/02/98/95, NBC 15/10/05, NTC 2004, & IS 875: 1987) for building-type structures, including partial wind cases
  • Seismic loads are generated automatically (ASCE 7-16/10/05/02, CBC 2001, IBC 2000, UBC 1997, NBC 15/10/05, NTC 2004, & IS 1893: 2002) for building-type structures, including accidental torsion

Design Features

  • Designs/optimizes concrete, hot rolled & cold formed steel, masonry, wood and aluminum
  • Program selected or user-defined rebar layouts for flexure and shear
  • Concrete beam detailing (Rectangular, T and L).
  • Concrete column interaction diagrams
  • Concrete wall design including in-plane, out-of-plane & bearing loads
  • Automatic spectra generation for ASCE 7, NBC, IS 1893, NTC
  • Extensive user controlled generation of load combinations
  • Intelligent unbraced length calculations for physical members
  • Tapered wide flange design per AISC Design Guide 25
  • Masonry wall design for in-plane and out-of-plane
  • Wood Shapes: Complete NDS species/grade and Glulam database
  • Complete wood wall design for bearing & shear walls: Segmented, Perforated & Force Transfer Around Openings design methods
  • Strap and Hold Down design for Wood Shear Walls
  • Seismic design of concrete walls using ACI 318-14 Chapter 18
  • Concrete seismic coupling beams for multi-story walls with diaphragms

Results Features

  • Graphic presentation of color-coded results and plotted designs
  • Color contours on plates, solid stresses/forces with smoothing
    and animation
  • Spreadsheet results with sorting and filtering of: deflections, forces, stresses, optimized sizes for strength or deflection, code designs, concrete reinforcing, material takeoffs, etc.
  • Standard and user-defined reports
  • Graphic member detail reports with force/stress/deflection diagrams and detailed design calculations and expanded diagrams

Integrated Building Design

RISA-3D, RISAFloor, RISAFoundation and RISAConnection are so tightly integrated that they operate as one program on the same building model. Optimize the gravity system in RISAFloor, the lateral system in RISA-3D, the connection design in RISAConnection and the foundation system in RISAFoundation, with a complete flow of information both ways.

General Features

  • Compatible with Windows 7/8.1/10 (64-bit Windows)
  • Program technical support provided by Professional Engineers

RISA-3D Features

Take a closer look at the modeling, analysis and design features of RISA-3D.

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RISA-3D Specifications

Review all of the detailed features and design codes in RISA-3D.

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RISA Integration

Find out more about the seamless integration of RISA programs.

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