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TTT draws a circle tangent to three things you pick. It is the three-tangent circle construction — the one that fits a circle snugly into a corner formed by three lines, or wraps a circle around three others. It is by Paul Standing, who also wrote the double offset and move layer routines on this site. The header describes the routine as coming "from the creative genius … [Read more...] about TTT LISP: Draw a Circle Tangent to Three Objects in AutoCAD

Structural Shapes draws the steel sections from the AISC Steel Construction Manual — either the ASD ninth edition or the LRFD first edition — from a dialog box. It is by Stephen R. Taylor, version 1.2, copyright 1997, and it draws in 2D from any of six viewing directions or in 3D as ACIS solids. One thing to be clear about before you download it, because the … [Read more...] about Structural Shapes for AutoCAD: AISC Steel Drawer (Shareware)

Name: Structural Steel Shape Drawing Program Description: This program will draw all of the structural steel shapes listed in the American Institute of Steel Construction's (AISC) Steel Construction Manual, either the ASD Ninth edition or the LRFD first edition. Type: AutoCAD AutoLISP Routine Author: Jeffrey Wells File Size: 24 Kb Cost: Free Worked on: AutoCAD Download File: … [Read more...] about Structural Steel Shape Lisp Routine

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