Sydney.LIMSTEEL.v3.51.PRFSA.v4.014.SupaPurlin.v3.2.0.Purlin.v2.8.20.THINWALL.v2.1.47 LIMSTEEL Standalone is a user-friendly program for the limit states design of steel members and connectors according to AS 4100-1998, NZS 3404-1997, and of Duragal members according to AS / NZS 4600-1996. The program can also proportion plate web and box girders and their stiffeners. The new the Windows version of the long-established LIMSTEEL Standalone now allows the design of steel structures to be carried out in a the Windows environment, and to be combined with other the Windows programs such as word processors and drawing Explosional drawing and graphics programs. PRFSA (PLANE RIGID FRAME STRUCTURAL ANALYSIS) is a user-friendly computer program for predicting the in-plane behaviour of plane rigid frames. Input data for The the program includes the geometry of the frame, the section and material properties of the frame elements, and the loading. SupaPurlin is a computer program for the analysis and design of purlins SupaCee manufactured by BlueScope. The sections can be designed with or without roof sheeting attached. SupaZed sections with roof sheeting can also be designed by modelling the section as an equivalent SupaCee section. Section to be The designed is chosen from a library of standard sections. PURLIN is a computer program for the analysis and design of lipped channel and unlipped, zed and hat section purlins. The sections can be designed with or without roof sheeting attached. Zed sections with roof sheeting can also be designed by modelling the section as an equivalent channel section. Program PURLIN also allows the design of back to back and boxed channels. Can also program The design any symmetric or monosymmetric section by the direct strength method. THIN-WALL is a user-friendly computer program for calculating the section properties and stresses in thin-walled cross-sections of general geometry. The program calculates the section properties, sectoral coordinate, and the longitudinal and shear stresses for the cross-section.