* Simultaneous moving loads, AASHTO/custom for bridges, cranes * Area loads with one-way or two-way distributions with optional blow through distribution for loading open structures * Automatic rigid diaphragm modeling with detachable joints * Accurate analysis of tapered wide flanges * High end mesh generationdraw a polygon with any number of sides to create a mesh of well formed quadrilateral (NO triangular) elements. * State-of-the-art 8 node solid elements with automatic meshing * State-of-the-art plate/shell elements with plane stress only option * True physical member modeling (members are aware of interior joints) * Automatic generation of wind and seismic forces (IBC 2000/2003/2006) * Automatic inclusion of mass offset (5% or user defined) for dynamics

* Multiple simultaneous dynamic and response spectra analysis using Gupta, CQC or SRSS with automatic calc of scaling factors * Accelerated Sparse Lanzcos dynamics solver, very fast and robust * Accelerated true sparse solver for static analysis * Robust two-way link with Revit Structure 2008 * Export DXF, SDNF, DesconWin, ProSteel3D and CIS/2 files * Import DXF, RISA-2D, STAAD, ProSteel3D and CIS/2 files * Automatic interaction with RISASection custom shape libraries * Support for all units systems & conversions at any time * Generation templates for grids, disks, cylinders, cones, arcs, trusses, tanks, hydrostatic loads, etc. * Unlimited undo/redo capability, automatic timed backup * Constant in-stream error checking and data validation * Open multiple spreadsheets simultaneously

* Dynamic synchronization between spreadsheets and graphics * True spreadsheet editing with cut, paste, fill, math, sort, find, etc. * Powerful graphic select/unselect tools including box, line, polygon, invert, criteria, spreadsheet based, save/recall selections with locking * Universal snaps and object snaps allow drawing without grids * Versatile drawing grids (orthogonal, radial, skewed)

* 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. Its a tool no structural engineer should be without! 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 and wood. We designed our premier product with the daily use of structural engineering professionals in mind. RISA-3D is so popular among structural engineers for many reasons but one in particular stands out: ease of use.

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