Computer Aided Drafting Simulations
A collection of interactive 3D visualizations and simulations to help you master concepts in computer aided drafting.
Introduction to CAD Workspace and Coordinate Systems - Theory & Concepts
A comprehensive guide to understanding the AutoCAD workspace, user interface, drawing templates, and the fundamental coordinate systems used in computer-aided drafting for civil engineering.
Interactive Coordinate System
Moves to exact X,Y coordinates from origin (0,0).
Command History
Precision Drawing Tools and Basic Geometry - Theory & Concepts
A comprehensive guide on utilizing AutoCAD's precision tools (OSNAP, Ortho, Polar Tracking) to construct fundamental geometric shapes used in civil engineering drafting, including lines, arcs, polylines, splines, and hatching.
OSNAP (Object Snap) Simulator
Advanced Editing and Object Manipulation - Theory & Concepts
A detailed exploration of AutoCAD's essential modification tools, demonstrating how to efficiently edit, move, copy, scale, align, and manipulate existing geometry using advanced techniques like Grips for complex civil engineering drawings.
Trim & Extend Simulation
Select a mode. The Red Lineis the boundary. Click "Execute" to perform the action on the Blue Line.
Layer Management and Object Properties - Theory & Concepts
Learn how to effectively organize complex AutoCAD drawings using layers, control object properties like color and linetype, utilize Match Properties, and understand the critical concept of \"ByLayer.\"
Layer Properties Manager
| Status | Name | On | Freeze | Lock | Color |
|---|---|---|---|---|---|
| ✓ | 0 | ||||
| C-ROAD-CNTR | |||||
| C-PROP-LINE | |||||
| V-TOPO-MINR |
Annotation, Dimensions, and Text Styles - Theory & Concepts
A complete guide on adding textual information, precise measurements, standardized annotations, tables, and fields to civil engineering drawings in AutoCAD.
Annotative Scaling Simulation
Change the Viewport Scale to simulate zooming in and out on a layout. Observe how the Geometry(the square) changes size. Toggle "Annotative" to see how the text behaves. When Annotative is ON, the text remains a readable, constant size.
Blocks, Attributes, and External References (Xrefs) - Theory & Concepts
Master the power of reusable content in AutoCAD through Blocks, Dynamic Blocks, and Attributes, and understand how to manage large, multi-disciplinary projects using External References (Xrefs).
Block Attribute Simulation
This simulates inserting a "Survey Point" block. The geometry (the cross) is the same every time, but you can define unique Attributes (Elevation and Description) for each instance.
Page Setup, Viewports, and Plotting - Theory & Concepts
Learn the essential workflow for transitioning a design from the infinite 1:1 Model Space to scaled, professional engineering sheets in Paper Space for individual plotting and batch publishing.
Paper Space & Viewports Simulation
The large gray box represents a Viewport cut into a white sheet of paper. Double-click inside the viewport to make it Active, allowing you to pan and zoom the Model Space underneath. Lock the viewport to preserve the exact engineering scale before printing.
Introduction to 3D Modeling and Civil Engineering Applications - Theory & Concepts
A foundational overview of transitioning from 2D drafting to 3D solid, surface, and mesh modeling in AutoCAD, leading into core Civil 3D concepts like surfaces, alignments, and profiles.
3D Boolean Operations Simulation
Select a Boolean operation to see how the two intersecting solids (represented in 2D) combine or cut each other. Shape A is the square. Shape B is the circle.
Select an operation to see the result. This applies equally to 2D regions and 3D solids.
Civil Engineering CAD Workflows - Theory & Concepts
Practical application of CAD tools in specific civil engineering disciplines, including Site Layout, Transportation, and Structural Detailing workflows.
Earthwork Volume Simulator (Cut vs. Fill)
Adjust the building pad elevation to balance earthwork.
✓ Site is nearly balanced! Ideal for cost savings.