topic Re: Join Mullions in Curtain Wall in Revit Architecture Forum

Join Mullions in Curtain Wall

vitaliy0001 — Wed, 11 Aug 2021 08:51:50 GMT

I have a simple vertical curtain wall. Mullions are the only structural members.

I also have a horizontal Curtain System for skylights coming into the top of this curtain wall - the mullions of both systems are all aligned. The mullions are in the form of an upside down 'L'.

Where they intersect at 90 degrees, I want to join the mullions to not have ugly lines in section views. However the join tool doesn't recognise the mullions at all - I can't select them to join them when it is active.

What is the correct procedure to accomplish what I want?

Re: Join Mullions in Curtain Wall

barthbradley — Wed, 11 Aug 2021 16:35:18 GMT

Replace with Corner Mullion.

About Corner Mullion Types | Revit LT | Autodesk Knowledge Network

Re: Join Mullions in Curtain Wall

RDAOU — Thu, 12 Aug 2021 09:18:14 GMT

@vitaliy0001

In case using the system L Corner does not work for the situation Wall/Skylight which you have...You will need to do the following:

create a Custom Mullion
- first create a profile using the Profile - Mullion template
- Load into the project
- In project browser scroll to Curtain Mullion
- Right click "Rectangular Mullion" and create a new type - Custom L Corner
- Right click the new type and Go to Type Properties
- Replace the Profile with the one you created in 1.a and Apply
the replace the top horizontal border of the wall & remove the border of the skylight as shown in below GIF

Re: Join Mullions in Curtain Wall

ToanDN — Thu, 12 Aug 2021 23:52:45 GMT

@vitaliy0001 wrote:

I have a simple vertical curtain wall. Mullions are the only structural members.

I also have a horizontal Curtain System for skylights coming into the top of this curtain wall - the mullions of both systems are all aligned. The mullions are in the form of an upside down 'L'.

Where they intersect at 90 degrees, I want to join the mullions to not have ugly lines in section views. However the join tool doesn't recognise the mullions at all - I can't select them to join them when it is active.

What is the correct procedure to accomplish what I want?

You could create the L mullions using:

- structural framing (image)

- in-place sweeps

- adaptive family

Re: Join Mullions in Curtain Wall

barthbradley — Fri, 13 Aug 2021 00:43:19 GMT

Is this what we're talking about?

Curtain Wall Systems.

Re: Join Mullions in Curtain Wall

vitaliy0001 — Fri, 13 Aug 2021 05:56:51 GMT

This is exactly what I wanted to achieve. Is there any other semi-automated way of doing this in curtain wall settings?

Re: Join Mullions in Curtain Wall

vitaliy0001 — Fri, 13 Aug 2021 05:57:55 GMT

So are you suggesting curtain systems for both vertical and horizontal surfaces will result in joined mullions?

Re: Join Mullions in Curtain Wall

ToanDN — Fri, 13 Aug 2021 06:37:30 GMT

Try model them as a sloped glazing by extrusion, or a curtain system by face, instead of a vertical curtain wall and a horizontal sloped glazing.

Re: Join Mullions in Curtain Wall

barthbradley — Fri, 13 Aug 2021 15:07:51 GMT

@vitaliy0001 wrote:
So are you suggesting curtain systems for both vertical and horizontal surfaces will result in joined mullions?

Yes. Easy, breezy too. No fuss. No muss.

Create a Curtain System from a Mass | Revit Products | Autodesk Knowledge Network

Re: Join Mullions in Curtain Wall

vitaliy0001 — Sat, 14 Aug 2021 09:28:42 GMT

Thanks. This worked for joining the mullion joins.

Now, I have another question - how can I make the top glass panel extend across over the vertical panel, instead of having a gap as per the screenshot?

Re: Join Mullions in Curtain Wall

barthbradley — Sat, 14 Aug 2021 15:58:03 GMT

@vitaliy0001 wrote:

Now, I have another question - how can I make the top glass panel extend across over the vertical panel, instead of having a gap as per the screenshot?

Do you mean like this?

One approach would be to use an L Corner Mullion as I mentioned at the beginning of this thread.

***Note "Thickness", "Leg 1" and "Leg 2" and "Material" values in L Corner Mullion Type Properties.

Re: Join Mullions in Curtain Wall

vitaliy0001 — Tue, 17 Aug 2021 09:22:28 GMT

Not really the effect I wanted - the glass should simply overlap without any mullions there.

The only way I can see is to unlock the panel and manually edit each one which takes hours, but has the required result. This is really difficult, because as soon as you make it manually, it dissociates from the plane and you have to re-position it.

Re: Join Mullions in Curtain Wall

RDAOU — Tue, 17 Aug 2021 11:00:07 GMT

@vitaliy0001

Curtain walls and curtain systems sometimes require a little bit of extra effort in order to get the desired outcome. The join between panels is easy and doesn't need to be as tedious as you described but it also depends on how you model the system/element...

If I would be using a curtain system, I would use a custom panel at the join between the vertical wall and the roof which would give the below result (see GIF)

Re: Join Mullions in Curtain Wall

vitaliy0001 — Tue, 17 Aug 2021 11:27:59 GMT

Thank you very much. This is a great solution. Much appreciated.