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, 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 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, etc.
  • Versatile drawing grids (orthogonal, radial, skewed)
  • 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, etc.
  • Support for all units systems & conversions at any time
  • Automatic interaction with RISASection custom shape libraries
  • Import DXF, RISA-2D, STAAD, ProSteel3D and CIS/2 files
  • Export DXF, SDNF, DesconWin, ProSteel3D and CIS/2 files
  • Robust two-way link with Revit Structure 2009

Analysis Features

  • Accelerated true sparse solver for static analysis
  • Flexible modeling of P-Delta effects
  • Accelerated Sparse Lanzcos 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
  • Automatic generation of wind and seismic forces (IBC 2000/2003/2006)
  • True physical member modeling (members are aware of interior joints)
  • State-of-the-art plate/shell elements with plane stress  only option
  • State-of-the-art 8 node solid elements with automatic meshing
  • High end mesh generation — draw a polygon with any number of sides to create a mesh of well formed quadrilateral (NO triangular) elements.
  • Accurate analysis of tapered wide flanges
  • 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
  • Member end releases, rigid end offsets, top of member offsets
  • Joint master-slave assignments
  • 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 turn off
  • 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 Features

  • Designs/optimizes concrete, hot rolled & cold formed steel, masonry and wood
  • Concrete Design Codes: ACI 1999/2002/2005, BS 8110-97, CSA A23.3-94, IS456:2000, EC 2-1992 & BSEN 2004, NZS3101-1995, AS 3600-2001, NTC-DF2004
  • Maintains consistent bar sizes through adjacent spans
  • Program selected or user-defined rebar layouts for flexure and shear
  • Concrete beam detailing (Rectangular, T and L).
  • Concrete column interaction diagrams.
  • Masonry Design Codes: MSJC 1999/2002/05, UBC 97 (ASD & Strength)
  • Masonry wall design for in-plane, out-of-plane & bearing loads
  • Steel Design Codes: AISC 360-05 ASD & LRFD, ASD 9th, LRFD 2nd & 3rd, HSS Specification, CAN/CSA-S16.1-1994 & 2004, BS 5950-1-2000, IS 800-1984, Euro 3-1993 & 2005, NZS 3404-1:1997, AS 4100-1998 including local shape databases.
  • AISI 1999/2001, CSA S136-01 cold formed steel design
  • NDS 91/97/2001/2005 wood design, Glulams, SCL, multi-ply, full sawn
  • Automatic spectra generation for UBC 1997, IBC 2000/2003/2006
  • Extensive user controlled generation of load combinations: ASCE, UBC, IBC, BOCA, SBC, ACI & International
  • Intelligent unbraced length calculations for physical members
  • Automatic approximation of K factors
  • Tapered wide flange design with either ASD or LRFD codes
  • Optimization of member sizes for all materials and all design codes
  • Steel Shapes: AISC, HSS, CAN, ARBED & numerous foreign databases
  • Light Gage Shapes: AISI, SSMA, Dale/Incor, Dietrich, Marino\WARE
  • Wood Shapes: Complete NDS species/grade and Glulam database
  • Complete wood wall design for bearing & shear walls. Choose from all three design methods: segmented, perforated & force transfer around openings
  • Seamless integration with RISAFoot (Ver 4) for advanced footing design

Results Features

  • Graphic presentation of color-coded results and plotted designs
  • Color contours of plate, solid stresses/forces with smoothing and animation
  • Spreadsheet results with sorting and filtering of: reactions, deflections, forces, stresses, optimized sizes, code designs, concrete reinforcing, material takeoffs, frequencies, mode shapes, etc.
  • Standard and user-defined reports
  • Graphic member detail reports with force/stress/deflection diagrams and detailed design calculations and expanded diagrams
  • Saved solutions quickly restore analysis and design results

Integrated Building Design

RISA-3D, RISAFloor and RISAFoundation 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 and the foundation system in RISAFoundation, with a complete flow of information both ways.

  • Lateral models created as you define & change floors
  • Gravity loads are automatically applied & updated
  • Automatically generated wind and seismic loads including partial loadings and accidental torsion cases with detailed reports
  • All reactions are automatically imported into RISAFoundation for design and detailing of the complete foundation system.

Use all the power of RISA-3D for your lateral system. Tension-only bracing, sloping columns, openings in walls are just a few of the possibilities. Even better, the RISA-3D, RISAFloor and RISAFoundation interfaces are the same, making them much easier to learn.

General Features

  • Optimized for Windows 2000/XP/Vista
  • Extensive customization options & user defaults
  • Program technical support provided by Professional Engineers