COMPUTER ASSISTED DESIGN (CAD) All drawings (including sketches and details) are done using the full implementation of integrated CAD / Database. HPI has facilities for Autocad 2005-7. All 2D & 3D work is done using modular reference files with automatic updating of the changes. All programs run on networked workstations. Remote project teams are connected through web technology, especially HPI’s own project-specific web sites. HPI also uses proprietary collaboration systems such as  ProjectWise, Aconex and project centre. These systems allows the entire project team to share one set of drawings and documents kept on a central web server.