Creating Contour Lines of Meshes without Ridges

ARCHICAD Meshes can be created in many different ways – by creating level ridges based on external drawings, by importing point clouds and modeling the terrain based on it or importing text files with the coordinates and the let ARCHICAD automatically build the terrain.
The first scenario is ideal as it will provide us with the contours that mark points at the same elevation, but other creation methods do not provide that natively. Using add-ons with more comprehensive earthwork-related functions can be an option, but for such a simple request we also have a solution within ARCHICAD.

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Rhino – Grasshopper – ARCHICAD Live Connection – Simple Example

In this article I will be focusing on a simple example to demonstrate RH-GH-AC live connection, another wonderful OPEN BIM workflow from GRAPHISOFT. We will start with an input from a ARCHICAD (AC) file and based on that input a set of balconies will be created using Grasshopper (GH) which is running on top of Rhino (RH). There is not much use of RH but we need Rhino to run Grasshopper.

Initial Setup

Make sure all the three applications (AC, RH and GH) were installed along with live connection add-on from GRAPHISOFT running.

Refer to Grasshopper ARCHICAD Live Connection 1.5 User Guide from the following link:
http://download.graphisoft.com/ftp/techsupport/documentation/addons/archicad-rhino-grasshopper/AC-Grasshopper_Connection_User_Guide0427.pdf

Chapters to focus:

  1. Getting Started
  2. Launch the Applications
  3. Start the Connection
  4. Grasshopper Palette in ARCHICAD

Grasshopper Help

To understand this exercise there is a need for basic understanding of Grasshopper. Please refer to the following links:
http://grasshopperprimer.com/en/1-foundations/1-1/2_the-grasshopper-ui.html
https://vimeopro.com/rhino/grasshopper-getting-started-by-david-rutten

Input from AC

  1. In ARCHICAD create a simple building with 10 Story + Roof. Set the Story to Story height as 3000 mm. Create a Complex Profile for the railing as well. Alternatively download the file from the link here.
  2. Use Line tool to draw a line from point P1 to P2, suggest to draw the line in 2nd Storey.
  3. Select the line just drawn using the Arrow tool.

rga01

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