2017 – 2019
Relief Map: AutoCAD
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This map combines vector data from the Nova Scotia Topographic Database and elevation data in the form of an ENZ point file to produce a relief map of Scots Bay and Cape Split, Kings County, Nova Scotia.
In addition to fundamental AutoCAD drafting techniques, this project leverages Civil3D surface display tools, importing of feature data objects, and object data queries to compile and symbolize geographic layers.
To produce a surface, ENZ point elevation data was imported and used as the basis for the creation of a new TIN (triangular irregular network) surface. The NSTDB data was converted to DXF format and added as AutoCAD block objects. From these, a shoreline mask was created to exclude ocean from further analysis.
The surface was symbolized according to elevation, with a range value of 10 metres and a custom colour ramp, using Civil3D surface display tools. Custom text styles were created for the various label classes, which were imported from a Nova Scotia Gazetteer shapefile. AutoCAD's cleanup tools were used to correct topological inconsistencies and convert 3D polylines to 2D, allowing for custom linestyles to be used within AutoCAD. Points representing buildings were added by creating an external data connection to an NSTDB shapefile and symbolized using a custom expression.
All data was symbolized according to cartographic standards. An A2-size print layout was created to display the map, with a surround including a table of elevations for the area and a UTM grid applied to the viewport.
LiDAR Processing with AutoCAD
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This map demonstrates AutoCAD's ability to process and symbolize remotely-sensed LiDAR (Light Detection and Ranging) data, producing a meaningful visualization.
The LiDAR data, in .las format, was imported into AutoCAD using the Civil3D Prospector tab's Create Point Cloud tool. Relevant classifications were selected from this data and added to newly-created surfaces styled as isolines. The building footprint was imported from a .dwg file.
An alignment was created from a polyline drawn to represent the road.
The final print layout was plotted at a scale of 1:750 on a tabloid-size page, with all essential map and surround elements added.
AutoCAD: Real Property Report
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This plot accurately and precisely displays the shape and size of a building and its location within the limits of a survey lot. These documents are commonly referred to as 'Surveyors' Location Certificates' in Nova Scotia, and may also be known as 'Real Property Reports' or 'Plot Plans'.
This document was created using a variety of AutoCAD drafting tools, including: Line, Mirror, Pline, Pedit, Circle, OSNAP, Text, Hatch, Extend, Fillet, Chamfer, and Dimensions.
To create this document, a new AutoCAD drawing was created with appropriate units, drawing limits, and layer definitions set. Lot boundaries and building footprints were drafted using the line, polyline, and offset commands. Streams were drawn using polylines and splining. The pool area was drawn using circle, offset, fillet, and chamfer.
Because all homes in the area have the same set back distance from the road, the mirror tool was used to copy the first dwelling, placing mirror images of it on adjacent lots. The offset tool was used to accurately construct a road of consistent width.
The survey marker symbol, stored in an external .dwg file, was added as a block element. Drawing limits and units were defined to ensure precision, accuracy, and adherence to local standards. Layer management was utilized to organize drawing elements. Object snapping was used to prevent topological errors such as gaps or slivers.
Hatching, line styles, and line weights were customized to create an aesthetically pleasing design, and final cartographic layout at a scale of 1:250 was prepared for plotting on tabloid-size paper.
AutoCAD: Subdivision Design
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This subdivision plan demonstrates the presentation of survey-related data, managing layers, and constructing line work features using geometry, angles, and distances within AutoCAD.
To create the layout, drawing limits and units were defined. Survey boundaries were drafted using absolute and relative polar coordinates, and labelled accordingly. To determine discrete lengths of some features, the explode tool was used to convert polygons to individual lines. Object Snap Tracking was used to center lot numbers within lot areas. Arc text was used to create an uncluttered, aesthetically-pleasing label scheme.
The final 1:1000 plot was printed on legal-size paper with a north arrow, legend, and other essential map elements in place.
3D Drafting with AutoCAD
This graphic demonstrates the use of basic 3D drafting techniques used within AutoCAD's 3D Modelling Workspace.
Techniques used in the construction of this piece included 3D Orbit, manipulation of visual styles (wireframe, realistic, etc.), dynamic UCS alignment, 3D Gizmos, 3D models (wireframes, solids, surfaces, meshes), use of the command line, and adding of surface materials to provide texture, along with construction tools such as Extrude and Revolve.
3D Drafting with AutoCAD: Floor Plan
This graphic shows how AutoCAD's 3D modelling capabilities can be used to convert the lines of a 2D floor plan into a realistic, to-scale three-dimensional model.
In addition to standard 2D and 3D drafting tools, Presspull was used extensively to create new solids from bounded 2D areas. Extrude was also used in the same manner to create faces, such as window panes.
To add realism to the finished product, materials were added to surfaces, and 3D models obtained from the AutoDesk Online Galley, such as the chairs and desks, were imported. Light sources and shadow effects were customized, and additional graphic work, such as adding the title text, was completed in Adobe Photoshop.