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1. ## Open joint in glass guardrail made with curtainwall system

I have chosen to make my glass guardrails using a curtainwall system rather than a railing so that I can have greater control over the location of joints in the glass. I would like to have open joints between panes and I think I need to be able to use essentially an invisible mullion on the vertical joints. Is there a way to do this?

2. In the type properties for the curtain-wall, set "Vertical Mullions" > "Interior Type = None" ??

3. That is what I have done. I have drawn vertical grid lines to show the joints and I can just note that the typical joint width is 1/2" or 3" and not model the gap, but I was hoping I could place some sort of mullion on the vertical joints that would actually create the gap without having the mullion visible.

4. Originally Posted by mthurnauer
That is what I have done. I have drawn vertical grid lines to show the joints and I can just note that the typical joint width is 1/2" or 3" and not model the gap, but I was hoping I could place some sort of mullion on the vertical joints that would actually create the gap without having the mullion visible.
just create a 1/2" wide x depth to equal your glass thickness mullion profile than use that to create a "joint" mullion. The sides of the mullion will represent the sides of the curtain panel (glass).

edit: this is the right way to do this especially if you need to schedule your glass panel sizes

5. Originally Posted by Dave Jones
just create a 1/2" wide x depth to equal your glass thickness mullion profile than use that to create a "joint" mullion. The sides of the mullion will represent the sides of the curtain panel (glass).

edit: this is the right way to do this especially if you need to schedule your glass panel sizes
But that wouldn't be invisible or am I missing something? To create a gap you need to incorporate it in your panel. Simply make a gap to the outer refplane there (and dimension + make it parametric)

But that wouldn't be invisible or am I missing something? To create a gap you need to incorporate it in your panel. Simply make a gap to the outer refplane there (and dimension + make it parametric)
why does it need to be invisible? In real life a 1/2" joint in 1/2" railing glass is not invisible. But, I'm interested in your method but am not quite following. Can you post and example?

7. OP: I would like to have open joints between panes and I think I need to be able to use essentially an invisible mullion on the vertical joints. Is there a way to do this?
I'm not making this up...

But here's the family. Can either overlap or cut back from the mullion. Set the "offset" parameters to either a positive or negative value and it'll work like a charm.
I'd be happy to write it up to a (1 post) blog if you'd like me to. In that case, I'll rebuild in english...

OP: I would like to have open joints between panes and I think I need to be able to use essentially an invisible mullion on the vertical joints. Is there a way to do this?
I'm not making this up...

But here's the family. Can either overlap or cut back from the mullion. Set the "offset" parameters to either a positive or negative value and it'll work like a charm.
I'd be happy to write it up to a (1 post) blog if you'd like me to. In that case, I'll rebuild in english...
I saw that the OP wanted invisible, I just didn't know why...

not being able to understand dutch is a problem. Which parameter controls the offset of the sides so that two panels next to each other can have a joint? Thanks for posting btw. This is something that I have to do all of the time.

9. LOL, me neither.
I'll set up a blog for this and redo the family with a how-to... It's fairly easy though.

10. I appreciate the input. I had thought of both of those options and I guess I would be more inclined to use the mullion method rather than the custom panel. The problem with the panel in my case is that much of this guardrail is going down a stair and custom panels will not work with the variety of glass shapes created on the stair. The easiest method appears to just leave it as is. I add a curtainwall grid line where I want the joints and then just note that they are 1/2" joints. If I were going to end up with 3" wide joints then I might be more inclined to use another method. I had hoped that if I made a mullion profile using invisible lines that I might have been able to apply the mullion and it would not show. Or, could I create some sort of subcategory under curtainwall mullions that would be sued for my glass joint mullions that would allow me to easily hide them while still leaving my mullions in actual curtainwalls and storefronts turn on.

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