AutoLISP Routines

TRUSS draws elevations of open-web floor trusses — the parallel-chord trusses used in timber floor framing, with a web of diagonals between top and bottom chords. You give it the truss depth, the size of the chord and web members, and the web spacing, and it draws the elevation. Drawing one of these by hand is tedious and drawing several at different depths is worse, … [Read more...] about TRUSS LISP: Parametric Floor Truss Elevations for AutoCAD

Trims is a free AutoLISP routine that crops an AutoCAD drawing to a rectangle in one operation. You pick two corners; the routine erases everything wholly outside that rectangle and trims back any entity that crosses the edge, or does the reverse and clears everything inside the rectangle. It is the classic tool for cutting a detail out of a larger drawing, tidying a sheet down … [Read more...] about Trims LISP Routine: Crop AutoCAD Drawings with SCB, SC, SCD

One file, around fifty commands. Dimensioning shortcuts, colour and linetype changes, zoom shortcuts, object snap toggles, block insertion, and a run of commands named simply 1 through 15. It is somebody's entire personal shortcut set, saved as a single file and passed on. The archive includes a README listing what each command does, grouped by job — dimensions, blocks, … [Read more...] about TOOLS LISP: 50 Drafting Shortcuts, and Why to Harvest It

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