Decided to re-visit coordinate settings for projects that requires IFC exchange between ARCHICAD and Revit in this blog. In my previous blogs the focus was only on Latitude(Lat) and Longitude(Long). I received some requests to handle Northing and Easting (UTM) as well. To address that I tested the settings of both ARCHICAD and Revit and share the result via this blog.
Before going into how to do the settings we need to understand how both tools work and various coordinate systems available for us to use.
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.
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:
Chapters to focus:
- Getting Started
- Launch the Applications
- Start the Connection
- Grasshopper Palette in ARCHICAD
To understand this exercise there is a need for basic understanding of Grasshopper. Please refer to the following links:
Input from AC
- 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.
- Use Line tool to draw a line from point P1 to P2, suggest to draw the line in 2nd Storey.
- Select the line just drawn using the Arrow tool.
This post is a follow-up of previous post Project Base Files for Coordination. In case the Structural team decided to use Tekla Structures for their BIM authoring then they need a Project Base File in Tekla with setup based on Architectural file.
Architectural Project Base File
Setup the Architectural Project Base File in ARCHICAD and export as IFC file as discussed in the post Project Base Files for Coordination.
This post is to follow up on a request for explanation of each step on the post Project Base Files for Coordination. Let me write this post to further explain the steps.
Why there is a need for Project Base Files?
As mentioned in the post Project Base Files (PBF) are project specific templates in various tools used for BIM authoring.
- PBF consists of Location, Orientation, Grids and Levels. These information can be based on national standards or agreed settings by the entire project team through BIM Execution Plan (BEP).
- This is to make sure everyone (BIM Authors) start with the right foot.
- This will ease the co-ordination process when the models from different BIM authors (disciplines or trades) are merged together.
- This is to represent the real world condition of the entire building (including all disciplines) virtually.
It is a requirement in Singapore to produce and submit color coded floor plans with tabulation of walls that shows legends, buildability types (BType), lengths, labor saving index (LSIndex) and buildability score (BScore). As we are doing it in BIM we can add part 3D models showing the floor as well. As part of ARCHICAD’s OPEN BIM approach the team have developed a very good inter-operable solution with Excel. Let us see how to do this with ARCHICAD + Excel.
FuturArc features an article in its current issue on GRAPHISOFT and the BIM approach of the company. Furthermore you can read how its products fit into the OPEN BIM workflow, why it is focusing on ARCHICAD instead of covering all AEC disciplines with one single solution and how the licensing policy will affect the upcoming years.
Just visit http://www.futurarc.com and click to view the sample for the March-April issue 🙂