On my personal blog, Shoegnome, I recently wrote about how Twitter can teach you ArchiCAD. You can (and should) read it by clicking here. The title of the post is a bit misleading because I actually spend most of the article giving tips on how one can best take advantage of the ArchiCAD-Talk Forum. Like I said, read the article. But the final tip was about Twitter, because I tell everyone to follow Laszlo Nagy—the ArchiCAD-Talk Moderator and Site Admin—on Twitter. He has started tweeting links to his favorite Forum discussions. Which is the ArchiCAD learning equivalent of Manna from Heaven. Before I go any farther, pause and follow Laszlo on Twitter.

Okay, that plug out of the way…here’s some proof of the amazingness that you’ll find when you start reading Laszlo’s tweets:

The matrices he mentions are below (for all of our convenience). Laszlo put them together as a result of a discussion about showing clerestory windows (and their Window Markers) on plans. How best to display windows at atypical heights, with or without their Markers, comes up SO, SO often. Click on the tweet above to see the full discussion, but also bookmark this post or print out the images below and never fret about how to get a Window to display the way you need it to again.

window - floor plan display + cut plane positionVisibility matrix that shows how the Window and Window Marker are displayed

window - floor plan display + cut plane position - window offVisibility matrix that shows how the Window and Window Marker are displayed when the 2D Detail setting for the Window is set to OFF

That is a lot to digest, so I want to add a few extra explanations to the matrices, to help you understand better what you are looking at. There are three features in ArchiCAD that are being utilized to create all the different display options.

Floor Plan Display Setting of Walls — Walls have a few ways of being displayed (as seen horizontally in Laszlo’s images). As shown in the image below, this display is controlled per element via the Wall Default Settings (or Info Box).

Wall Floor Plan Display

Floor Plan Display Setting of Windows — Windows (and doors) have a few ways of being displayed (as seen vertically in Laszlo’s images). As shown in the image below, this display is controlled per element via the Window (or Door) Default Settings (or Info Box). This is a good place to mention that the Matrices above also describe how Doors display under similar conditions.Window 2D Detail Level

Floor Plan Cut Plane — At what elevation the floor plan is cut is determined by the Floor Plan Cut Plane. You can get to this by going to the View Settings of a particular View. It’s VERY important to remember that the Floor Plan Cut Plane is a parameter of an individual view. So for every plan view you can have a customized Floor Plan Cut Plane. This means a few things. Occasionally the Cut Plane height will vary between stories. This might make elements display weird when you navigate to a different story via the Project Map (which you should rarely do anyways) or by going up or down a story using a keyboard shortcut. This is rare, but it will happen if you set the Cut Plane at a special height to make sure it cuts a particular window properly (though following Laszlo’s Matrices above, you can probably set your Windows and Walls to avoid this situation). More likely though you’ll find that you are using a unique Floor Plan Cut Plane as part of a second saved view of a story so as to more easily show clerestory windows. I really need to do a post that covers the Floor Plan Cut Plane, clerestories, and split levels in more detail. If you are impatient for more, check out the Help Center articles here and here.

Floor Plan Cut Plane

Further reading

IFC connection

As everything discussed above is just about graphic display, IFC doesn’t really factor into any of it. But Laszlo Nagy sure has a connection to IFC. He was one of the many ArchiCAD gurus I featured in my recent post about IFC Mapping. You’ve watched all those videos, right? As should be no surprise, I learned about Laszlo’s contribution from one of his tweets.

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1 Comment

  1. rajapandi

    very nice


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