AutoLISP Routines

Al's Steel Mill draws North American structural steel sections to their real profiles — tapered flanges, radiused corners and fillets included — from the dimension tables in the AISC Steel Construction Manual. You pick a shape type from a dialog, pick a size from the list, pick a view, and place it. It covers 23 shape types across W, M, S and HP beams, C and MC … [Read more...] about Al’s Steel Mill: Free AISC Steel Shape Drawer for AutoCAD

Steel Shapes version 4.3 draws standard steel sections from a dialog box, in 2D and 3D. It is a substantial package — forty files, including twenty-odd shape modules and a dialog definition — written by Luke Livermore for Design Point and copyrighted 1999. This one costs sixty-five dollars The documentation inside the archive is emphatic about it, in capitals and … [Read more...] about Steel Shapes 4.3 for AutoCAD: What the Licence Actually Says

STAIRCAL works out stair riser and run dimensions from a floor-to-floor height. Give it the height and it reports the calculations — how many risers, what each one measures, and the going that goes with it. It is by John Charles Vogt of Kennedy Associates, Architects, in St. Louis, Missouri. It is imperial, and it rounds to the eighth of an inch Not a caveat so much as … [Read more...] about STAIRCALC LISP: Stair Riser and Run Calculations for AutoCAD

SPST draws a complete spiral staircase in 3D from about a dozen answers: centre point, inner and outer radius, the angle swept between the first and last steps, the total rise, and the number of steps. It builds the treads and the railings as 3D mesh surfaces, so what you get is a genuine three-dimensional object you can view from any angle, not a plan symbol. It is by … [Read more...] about Spiral Staircase LISP for AutoCAD: Draw Stairs in 3D (Free)

Name: SPS Description: Program to process of several polylines simultaneously. The user can select a group of entities, the program will filter out non-polylines. The user is then prompted to select one of the following properties to be manipulated; Width - change all selected plines to the specified width, Elev - change all selected plines to the specified elev, Layer - change … [Read more...] about Several Polylines Simultaneously Lisp Routine

Click an object, and its layer becomes the current layer. That is the whole routine, and it is one of the most-used operations in drafting — you are about to draw something that belongs with that, so make that layer current. It is by Art Whitton, finished on 21 November 1996 and revised six days later. It is coursework, and the header says so The file's header records … [Read more...] about SL LISP: Set the Current AutoCAD Layer by Picking an Object