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roof

Devonha
Contributor

Hello everyone. What is the best way to extend roof sides without moving pivot lines. I have a task where says:
roof pivot line must be on inside face of the wall but roof perimeter must be aligned with outside face of the wall. Is it even possible to do? Or the only possible way is to extend pivot line?

Architecture student Tautvydas Grigalauskas

ARCHICAD 25.0.0 INT
LAPTOP-ER287GTP • AMD Ryzen 7 5800H with Radeon Graphics 3.20 GHz • 16,0 GB
13 REPLIES 13

Devonha:

 

The Roof will have both a Pivot Line, which is where its height is set, and a perimeter (Edge) that sets its outline. When the Pivot Line and Edge are coincident, then Archicad will select the Pivot Line when editing. So move the Pivot Line a known dimension to expose the Edge, move the Edge, then move the Pivot Line back that known distance.

 

You should add a Signature to your Profile (click the Profile button near the top of this page) with your Archicad version and operating system (see mine for an example) for more accurate help in this forum.

 

David

David Maudlin / Architect

www.davidmaudlin.com

Digital Architecture

AC24 USA • iMac 27" 4.0GHz Quad-core i7 | 24 gb ram • MacBook Pro 2.8GHz | 16 gb ram • OSX10.15.7

Devonha
Contributor

It could be that I didn't understand you correctly. It didn't work so I will leave screenshots below. The main thing is to extrude roof edge to the wall edge as shown in example (screenshot #1)
When moving pivot line the roof also moves. I want to leave the pivot line by wall inside face.

The other question is how to remove walls that are coexisting with roof (screenshot #2)

Thanks to anyone for your replies.

Architecture student Tautvydas Grigalauskas

ARCHICAD 25.0.0 INT
LAPTOP-ER287GTP • AMD Ryzen 7 5800H with Radeon Graphics 3.20 GHz • 16,0 GB

Your screen shots did not attach.

Simply capture your screen (or portion of it) and then paste directly into the reply.

 

Barry.


One of the forum moderators.
Versions 6.5 to 25
Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10
Dell Precision 3510 - i7 6820HQ @ 2.70GHz, 16GB RAM, AMD FirePro W5130M, Windows 10

Screenshot (54).pngScreenshot (55).png

Architecture student Tautvydas Grigalauskas

ARCHICAD 25.0.0 INT
LAPTOP-ER287GTP • AMD Ryzen 7 5800H with Radeon Graphics 3.20 GHz • 16,0 GB

Devonha:

 

In your screen shot, the heavy blue line is the Pivot Line, the lighter green line is the Edge (perimeter) of the Roof. You can edit the Edge either in 3D or in plan by selecting it and using the Pet Palette options show by 4dProof to extend the Edge.

 

The Walls extending through the Roof could be due to their Building Material Intersection Priority (the Wall is stronger than the Roof). I have seen this before but cannot reproduce it now, so can you spell out the steps you took to connect the Wall to the Roof?

 

Thanks for adding your signature.

 

David

David Maudlin / Architect

www.davidmaudlin.com

Digital Architecture

AC24 USA • iMac 27" 4.0GHz Quad-core i7 | 24 gb ram • MacBook Pro 2.8GHz | 16 gb ram • OSX10.15.7

@David Maudlin 


1. Builded a wall.
2. Made a roof pivot line by inside face of the walls.
3. Selected every element of my project and used ''Trim elements to roof'' tool to connect walls and roof.

Below I will show you how project changes after using the 3rd step. For some reasons I've noticed another problem. After using ''trim elements to roof'' tool, the connection of the these two objects are gone (shown in screenshot #2, middle of the object)
Also. After selecting roof's perimeter and using pet palet to extend sides of the roof it works but adds another problem. Length dimension is ok as I get what I wanted but width dimension also extrudes and that makes it problematic because my goal was only to offset the roof's length dimension. (shown screenshot #3)

Anyway, I think that the must is to find a roof covering tool to hide the construction of the roof and not to offset the roof.

To make it clear:
Question is how to find roof covering tool? I am not familiar with it.
How to keep in place connection between buildings after using ''trim elements to roof''?




Screenshot (57).pngScreenshot (58).pngScreenshot (60).png

 

Tautvydas

Architecture student Tautvydas Grigalauskas

ARCHICAD 25.0.0 INT
LAPTOP-ER287GTP • AMD Ryzen 7 5800H with Radeon Graphics 3.20 GHz • 16,0 GB

'Trim to Roof' uses a cutting body that sits under the roof.

There is an 'on-screen' option to turn this cutting body on in 3D.

The cutting body can be set to the pivot line extent or the edge of the roof.

 

When you perform the trim, you decide whether you want to trim the wall inside or outside of the trimming body.

As you connection is on the outside, that may explain why it disappears (gets trimmed away).

You will also have issues with the strengths of your building materials - stronge bulding materials cut weaker ones which is why the wall show through to the top surface of the roof.

 

Personally I use Solid Element Operations with roofs (I am a bit old school - this is all we used to have).

Use 'Subtract with upward extrusion' to trim away the top of the wall above the roof.

 

Barry.


One of the forum moderators.
Versions 6.5 to 25
Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10
Dell Precision 3510 - i7 6820HQ @ 2.70GHz, 16GB RAM, AMD FirePro W5130M, Windows 10

Tautvydas:

 

I agree with Barry that SEO is a better option. And don't select all elements, select only those that will interact for each SEO, as Archicad will need to calculate the operation for non touching elements if everything is selected.

 

SEO vs Trim Elements.png

 

 

Also. After selecting roof's perimeter and using pet palet to extend sides of the roof it works but adds another problem. Length dimension is ok as I get what I wanted but width dimension also extrudes and that makes it problematic because my goal was only to offset the roof's length dimension. (shown screenshot #3)

As 4dProof showed, use the Offset Edge option, not Offset All Edges option, in the Pet Palette.

 

David

David Maudlin / Architect

www.davidmaudlin.com

Digital Architecture

AC24 USA • iMac 27" 4.0GHz Quad-core i7 | 24 gb ram • MacBook Pro 2.8GHz | 16 gb ram • OSX10.15.7

SEO is a best solution to pretty much everything you want to subtract etc. but always keep in mind if you do too much operation and your system can't handle it tends to drag / hang in certain parts. 😁

In the end what is your Objective?
ArchiCAD 9 onwards

4dProof
Expert

the pet palette is going to be your best friend for roof edits like this. Also consider using single plane roofs rather than a multi-plane roof, as this will maximize the design flexibility.

BIM solutions and trouble shooting (self proclaimed) expert

Devonha
Contributor

The study guide gave us a command to use double plane roof. Anyway, I will try the pet palette. Thank you

Architecture student Tautvydas Grigalauskas

ARCHICAD 25.0.0 INT
LAPTOP-ER287GTP • AMD Ryzen 7 5800H with Radeon Graphics 3.20 GHz • 16,0 GB

my guess is it's one of these options you are looking forScreen Shot 2022-01-06 at 7.54.52 AM.png

 

Screen Shot 2022-01-06 at 7.55.00 AM.png

 

BIM solutions and trouble shooting (self proclaimed) expert

i'd go for offset edge any given day. just don't forget to pick the blue reference line. 😉

In the end what is your Objective?
ArchiCAD 9 onwards

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