Creating Topography in Revit Using an AutoCAD (.dwg) File containing LiDAR Contour Data

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Hello, Lindsay here from Equator and  today I'm going to show you how to   create a 3D Terrain in Revit  using a DWG or AutoCAD file.   First thing we want to do is source our contour  data or our topographic data, and we can do that   in Equator. So we want to open Equator, either log  in or create a new account, and then we can either   search for our site by using the search bar or we  can just zoom into the area that we need to go to. okay Zoom into this area right here,   then we want to go to the data tab and we want to  turn on elevation data just to make sure that the   site we have chosen actually has LiDAR coverage.  It looks like it does have LiDAR coverage,   so now we want to create a new site by  selecting the new site button down here. Okay we will zoom in to our designated area. We can change the site boundary if  we would like to but for this purpose   we will just select okay. This is an okay  boundary for our project. Now we want to go   again to the data tab and the second option is  Contours as a DWG so select the plus symbol.   We would like it for site one, that's the  site we've just created. Select site one,   the highest quality, and then we can choose if  we want smooth or detailed contours. For this   project I will select detailed which gives us  a contour interval of 0.3 meters. Hit generate. It is currently processing, we can  see that by the green bar down here. There we are, these are our contour  lines here. Now we want to download those   by hitting that download button. We  would like to export it to a DWG file   in this coordinate system. If you need to  download in a different coordinate system,   then you can choose custom and enter the  coordinate system that you need to use.   We're going to use match the project so  meter for vertical unit and select process. Okay so our files are now downloaded.  If we go to our download folder   we have two files that were just downloaded:  a readme file which shows all of our metadata   and then a zipped file which will contain  our DWG file. Let's just extract that. Okay and let's check what's in that folder. You  have a couple different files that get downloaded   with that but what we are really interested  in is this .dwg file. Now we want to go into   Revit and we say new model.  You probably have a template   that you use for your work but for my  case I'm just going to select none.   Okay, and then metric because we've downloaded  our CAD file in metric units. First step is   bringing our CAD drawing in, so we can either  link our CAD drawing or import our CAD drawing.   If our CAD drawing may change in the future,  then we should link it, and then we can easily   upload the new changes. If you have no changes  that are going to be made in the future to that   CAD drawing then you can just import it. For this  demonstration I am going to link the CAD drawing. We want to navigate to where our CAD drawing  is, so in this case it's in my downloads file. Select Contour. Now we want to make sure the current view only  is turned off. This ensures that we can see it   in 3D and that the x, y, and z coordinates are  there. Then I change my import units to meters   because that is what we downloaded our DWG file  in and then the rest should be okay. Click open. Here is our CAD drawing. If we go into our 3D view   we can see that it is indeed 3D, the lines are  3D. If we don't have z- coordinates attached   then this would be completely flat, and we  wouldn't be able to create a topographic   surface from it, but because our z-  coordinates are attached we can create   a topographic surface. We want to go into Massing  & Site, select toposurface and create from import,   select import instance and  then select your CAD file.   Then we want to make sure we know what our x,  y, and z coordinates are saved in within our CAD   file. If you've downloaded it from Equator,  they are going to be saved in the Contour   layer. Select the layers that have the x, y,  and z coordinates on them and select okay. If we zoom in we can see that our CAD  drawing contour lines all have points on   them. These points can be changed if you need  to change the elevation of one of the lines   or if you're okay with it, which  I'm okay with this surface and all   the elevations within this surface, you hit  the green check mark for finished surface. Okay and there it is. Let's hide our CAD file. Okay, this is our surface. Let's see  if we can see it in realistic view,   and there it is. We can see  all the changes in elevation. And that is how you create a 3D Terrain in Revit  using a DWG or AutoCAD file. Thanks for watching!
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Channel: Equator Studios
Views: 11,465
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Id: KYJlDGW2BhE
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Length: 8min 11sec (491 seconds)
Published: Mon Apr 03 2023
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