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Create a 3D Site Program Using CADMapper and AutoCAD

Need to quickly create a 3D site program in AutoCAD?

Here's how to do information technology.

This tutorial covers the following information:

1. Setting up a 3D site in CADMapper

2. Converting Units: Metric to Imperial

3. External References: Separating Layers into Drawings

Disclosure:

CADMapper is a website that can save architects, designers, and planners tons of fourth dimension past automatically generating iii-Dimensional data for over 200 cities around the world. CADMapper generates 3D models that can be used with AutoCAD, Sketchup, Rhino, and Illustrator. To generate information for topography, buildings, and streets, CADMapper pulls information from OpenStreetMap.

I should commencement by saying that my design work primarily involves the schematic design phase of architectural blueprint. I understand that site information should be field-verified by professionals in surveying, civil engineering, etc. to ensure accuracy. The intention of this tutorial is to use CADMapper to create a ground for architectural schematic designs.

Setting up a 3D site in CADMapper

Step one: Find your site - Kickoff with Google Maps.

I like to starting time by finding my site in Google Maps. Oftentimes, there is picayune information given that specifies coordinates or a physical accost of a site. Searching for the site in Google Maps gives me a better understanding of what my site looks like from an aeriform perspective.

Once you lot find your site in Google Maps, head over to CADMapper.com and blazon in the approximate address - or two intersecting streets.

CADMapper only provides vector line information, so it might be cumbersome to try to search for your site starting in CADMapper. Look between Google Maps and CADMapper to strop in on your site, and create a box in CADMapper that captures the information y'all demand from your site. CADMapper is free, only upwards to 1km of information.

Always try to capture more data than yous think you demand. You never know when you might demand the information in the futurity. Information technology's amend to have it and not need it, than to need it and non have it - I've had to stitch multiple CADMapper files together earlier considering I left out some important information when I created my initial file, and information technology's a existent pain to go through that procedure.

Step 2: Plough on 3D Buildings

If y'all want building height information, check the box for 3D Buildings. If building information is available (which it often is in big cities), CADMapper will create mesh geometry of buildings in the CAD file. You tin can specify "False Tiptop Data", in which CADMapper will generate buildings without tiptop information to a value that you specify. Not a necessary step, only it can yous salvage drawing time.

Step 3: Select 3D Topography, topography contours spaced at four meters.

It'south good exercise to just collect equally much data as we can get, early in a project. The everyman spacing that CADMapper volition generate for contour lines is four meters, which should be plenty of data to get you lot started in your design.

Step four: Road Geometry, Select "Outlines"

CADMapper provides options for generating road graphics. Roads can exist depicted equally single heart-lines, outlines, or mesh surfaces. If you intend on using this site file for fabrication, such equally 3D press or laser-cut, I would suggest choosing an option that all-time suits your needs. For this tutorial, selecting "Outlines" will provide graphic separation between types of roads, and allow easy scaling of the drawing in AutoCAD. Additionally, "Outlines" is a good pick to choose for laser-cut site models.

Modify the road dimensions to specific dimensions: I recommend the following:

• Highways: x meters

• Major Roads: 8 meters

• Minor Roads: half dozen meters

• Paths: iv meters

Step 5: Generate the CADMapper File

If everything is set to your liking, click on "Create File". It will take a moment to generate the file.

One time the file is generated, you can examine the map in iii views:

• 3D Axonometric View

• 2D View

• Topography

At this point, select download. The file will download as a single .nothing, containing one .dxf file that y'all can open up with AutoCAD.

Converting Units - Metric to Imperial

Past default, CADMapper exports units in meters. For our purposes, nosotros need to catechumen meters to feet.'

Stride ane: In the "Units" Menu, Change 'Decimal' to 'Architectural'

Type in command, "Un" to open up the Units menu. Change 'Decimal' to 'Architectural', and 'Millimeters' to 'Inches', respectively. Note that simply changing the units will non change the scale the cartoon. For example, 2 meters will exist converted to 2 feet, which is incorrect.

Then, we'll demand to scale the drawing after changing the units from metric to imperial.

Pace 2: Verify the Altitude of a Road

Use the command "DIST" to measure the distance of 1 of the roads generated by the CADMapper file. It should read as one of the measurements that was specified on the CADMapper website. For this case, the road is 6 meters.

Step 3: Scale the Drawing

If the road distance is half-dozen meters, information technology will need to be scaled to 19.685 anxiety (because 1 meter = 3.28084 anxiety) after changing the Units from metric to royal.

Describe a polyline (command "PL") off to the side of your drawing in model infinite somewhere. Below that six meter line, describe a line of distance, 19.685.

Use command "AL" for 'Align', and select EVERYTHING in model infinite. Deselect the (19.685) line. We want to scale everything in the drawing except that line.

Select the first point of the (vi units) line, and the first point of the (19.685 units) line. So, select the second signal of the (6 units) line, and the second point of the (19.685 units) line.

When prompted to 'Scale', select YES.

If done correctly, all of the elements in the cartoon will take scaled with the (half dozen units) line, which now matches the distance of 19.685. So now, when the Units are set to "Architectural" and "Inches", all of the roads should read as the equivalent imperial measurement.

External References: Separating Layers into Drawings

CADMapper conveniently sorts drawings elements into split up layers. This is useful in terms of organization, however, we should gear up our drawings in a way that allows multiple people to piece of work on them. This may not exist necessary for your particular project, but information technology'due south practiced practice to acquire the conventions of creating external references to proceed file systems organized, and to permit the potential for multiple people to piece of work on a single projection.

Streamlined file systems = saved fourth dimension on drafting work. And saving drafting time volition open upward time for more important stuff, like designing!

Here'southward how to quickly create external references from layers:

Step 1: Open the Layer Menu

Type "LA" to open up the Layer Menu. Freeze all layers, then unfreeze the get-go layer that you want to catechumen into an external reference. In this case, we'll offset the the layer called "buildings".

Next, type "Select" and "All" to select everything on that layer.

"Copy Base" with, CRTL+SHIFT+C, and so specify the origin point as 0,0,0 (10,y,z, respectively).

This is of import, because copying the information with the origin point will permit you lot to bring all of the drawings into the new "Master Drawing" at the same point. This volition ensure that the drawings are lined upwards correctly, maintaining accuracy in the information.

Step two: Create the "Master Cartoon"

Open a new drawing. This will become the "Master Drawing", which will hold all of the xrefs that we will exist creating for each layer. The "Main Cartoon" will expect exactly like the original file containing all of the private layer data. The benefit of setting up a master drawing this way, is that multiple people tin can work on individual files within 1 project.

For instance, one person can work on the "Buildings" layer. Another person tin can work on the "Roads" layer, and then on.

This is not but user-friendly for grouping drafting projects, but information technology will aid y'all build a consistent file system that can be applied to a number of different programs outside of AutoCAD. It's just a system of file linkage, and these types of systems offering the most flexibility for organization, and drafting workflows.

One last notation: the "Primary Drawing" should serve equally a file for reference, and should not be drawn on or referenced to other drawings. Changes made on all of the other external references will reflect on the Master Drawing, nonetheless, changes fabricated on the Main Drawing will non reflect on the linked external references. It's a one-manner street, and maintaining this system volition ensure that your project is make clean and organized.

Good luck!

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Source: https://rascoh.studio/blog/3d-site-plan-cadmapper-autocad-tutorial