Flat Steel Truss Automated Design System

Abstract

This article analyzes creation methods of automated design system. The creation methods of flat steel truss automated design system are discovered with Unified Modeling Language. Use case, collaboration and statechart diagrams are presented. Analyzed objects-classes: bar, welding seam and node sheet. Class bar methods select cross sections of bars from standard edges database, calculate bar’s geometry, write information to matrix and draw bars in the drawing. The bar’s welding seams near node sheet are calculated using class welding seam methods; information is read from matrix and drawn. Knowing bars’ and welding seams’ geometry, class node sheet methods design node sheets. Integrated CAD environment (AutoCAD) with Visual Basic Application programming language enlarges possibilities in engineering design. Design system and an example of flat steel truss project with specification are presented. Creation methods of automated design system are discussed and conclusions are made.