Editable Topography from ARCHICAD to Revit

Recently came accross a situation where the Design Architect need to exchange ARCHICAD model with their project partners. The Main Contractor was using REVIT for their BIM process. So, there was a need for conversion of ARCHICAD model to REVIT model via IFC.

The project has large topography as it was a infrastructure project and all of them were created using Mesh object in ARCHICAD. When the topography was transferred to REVIT via IFC that becomes as a Model In-Place element which can not be edited easily. The Main Contractor requested for Toposurface which can be edited further in REVIT. This article covers the solution on how to re-create an editable Toposurface in REVIT using the data exported from ARCHICAD.

t2r01

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Project Base Files for Coordination – Explanation

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.

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Decimals and Digit Grouping

Ever wanted to change how the numbers appear in ARCHICAD, but could not find the settings in the Dimension Preferences? By default all numbers are showing commas for digit grouping and full stops for decimals.

Screen Shot 2016-04-08 at 18.49.17

This can be very easily changed in the system settings of your OS as ARCHICAD uses the global settings.

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Splitting Rules of IFC Mapping

This post is to follow up on the previously published ‘Syncing Zone Cover Fills and Floor Finishes’ article where we mapped the Cover Fill value of the Zones to a custom made IFC property and made it appear in the Zone Stamp, this way saving some time, but most importantly reducing the risk of human errors when the user has to manually update the Floor Finish parameter of the Zones.

We also faced a minor (?) problem: since the naming convention of the Fills is diverse, not all Fills can be used right away to be displayed with their names as Floor Finishes. For example all ‘Pavement xx’ fills should only show ‘Pavement’, instead of showing the full name, including the version number.

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Splitting the IFC Mapping rules is a way to solve this problem. A similar case where rule splitting was involved for the Zone Names has already been presented on this blog by Chidam, this post intends to give some detailed explanation on the rule splitting particularly, so it is easier to embrace it. IFC Mapping is NOT ONLY for model exchange purposes!

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Ramp Parapet with Morph Tool

Place a Ramp Object

I felt it is good to share some software specific tips and tricks in between my posts focusing on interoperability. In this post I am sharing a tip on how to create guard walls (parapets) along the edge of a curved ramp using Morph Tool and Solid Element Operation.

Place a ramp object with the settings as shown in the below image and switch to 3D window (press F5).

ramp01

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