topic Re: Layers in Project data & BIM

Layers

Anonymous — Tue, 30 May 2023 10:41:34 GMT

Is it against ArchiCAD's protocol to delet the already given layers when you open a fresh ArchiCAD project, and instead create your own?

Re: Layers

Eduardo Rolon — Sun, 30 Jun 2013 02:29:26 GMT

Hmmm… No, that is why you create a template if I parse you question correctly.

Re: Layers

Anonymous — Sun, 30 Jun 2013 02:36:04 GMT

I think you have understood me correctly ejrolon.

Basically what I'm finding is that even though Archicad chooses to place let's say new walls on the "Structural - Bearing Layer", I'm finding it makes more sense to me to create my own layers, for example:

Existing Walls | Ground Floor
Existing Walls | Basement
Existing Slabs | Ground Floor
Planned Walls | Ground Floor
Planned Walls | Basement
Planned Slabs | Ground Floor

and place my Existing on the existing layers, and proposed construction on the Planned Layers.

Is it then ok to delete the other un-needed layers that the project file originally opens with?

Re: Layers

Eduardo Rolon — Sun, 30 Jun 2013 02:43:46 GMT

Yes that is the beginning of creating your template file.

I would rename the layers instead of deleting them as an option.

But what I do is I have created my own set in addition to the original AC layers therefore no need to erase or overwrite them.

Re: Layers

Eduardo Rolon — Sun, 30 Jun 2013 02:46:55 GMT

Usually mine are named

A-Walls: Existing
A-Walls: Gen

Go from general to specific and remember that they group by alphabetical order.

---
Then you need to get working on your Favorites.

Re: Layers

Anonymous — Sun, 30 Jun 2013 02:47:25 GMT

hmm.. that's what I originally did ejrolon, however I'm now facing a new problem. Not realising I still had walls and objects on those original layers, I deleted them without checking, and now when I change my demolishion filter from Existing to Planned, half the building is missing

Is there any way to bring these back?

Re: Layers

David Shorter — Sun, 30 Jun 2013 03:29:24 GMT

Two things
One. You do not need to differentiate between new and existing in the layer names as you have the renovation filter to control the visibility.
Two. You do not need to have the story name in the layer name as layer names are common across stories. Elements are placed on the appropriate story and the appropriate layer.

Re: Layers

Anonymous — Sun, 30 Jun 2013 05:04:56 GMT

Interesting point David.

So is there any way I can recover the deleted layers?

Re: Layers

David Shorter — Sun, 30 Jun 2013 05:09:47 GMT

The only chance is to open the bpn. This is one save behind the current copy. If you haven't saved this might help.
Or quit without saving and reopen the file

Otherwise nope.
Sorry

Re: Layers

David Maudlin — Sun, 30 Jun 2013 13:06:22 GMT

blimp:

Since you are using Mac, get another hard drive and enable Time Machine (automatic back up), I have it on both my laptop and desktop. I don't need it often, but has been invaluable when I do need it.

David

Re: Layers

Anonymous — Thu, 04 Jul 2013 01:33:24 GMT

Try following a standard for your layer names, it will help in the long run. Use the search function near the top of this page and search for NCS Layers, you'll find some help there.

I've been using my interpretation of the AIA CAD Layer Guidelines for a while, it is a tree part system consisting of:

1) A one letter discipline code: A=Arch, S=Struc, etc
2) The group type or element descriptor, use enough characters to make remembering easy: WALLS, SHELL, or TOPO
3) You can have a third group for greater refinements: PARTIAL, SOFFITS, NOTES, AREA, PHASE2, etc

The following screen shot shows you some examples. Good layer naming allows you to create multiple layer combinations settings for specialized work. Notice how I use the combinations to isolate roof framing, wall framing, gable and eave trim work, etc. Of special interest is the DRAFT - ROOFS - NO ROOF combination: I use this type of combination to view all the roof accessories, parapet walls, etc without the distraction of the quite complex roof forms in use on my projects. The example is a result of my usage over the years, but I hope this gives you some ideas.

PS. The cows have left the barn as they say, but get in the habit of using the >FILE >SAVE AS command and the end of the day, name your file something like MyProject-Monday. Do this every day and overwrite these files the next week. You will always have something to go back to in a situation like this. I am a PC user and do not have the MAC Timemachine function available (for free that is), so I've used this method for so long it is second nature.

Re: Layers

David Shorter — Thu, 04 Jul 2013 02:08:09 GMT

blimp, are you using the INT or Australian installation?
The Aussie layers are based around trades with all the tool defaults set for the appropriate layers and settings
I wouldn't delete any layers as they take no space (I mean they don't make the file larger) Always hide locked layers when creating a layer combo then you don't see them in the tool dialogues.
The naming of layers can be a very personal preference but essentially I prefer to have layers which relate to actual building elements. For instance I don't like layers named (say) "3D only", which I have seen in many files. I don't know a building component called "3D Only" so why have a layer for it?
The actual names can be modified providing the concepts above are used. There is an NCS style set of layer names available in Australia, they fit very well to the current naming concepts.
Hope this helps

Re: Layers

Aaron Bourgoin — Thu, 04 Jul 2013 14:31:37 GMT

I don't draw anymore. I build stuff. Virtually.

Layer conventions are deeply rooted in the representation of things, not the making of things.

I prefer to think like a specifications writer when I develop strategies for layer conventions. they've been working with real stuff for ages.

I like layers. They help me address actual trades and processes.

Revit should have layers. Too bad for them that they don't.

Re: Layers

Anonymous — Thu, 04 Jul 2013 16:00:50 GMT

A few thoughts on layers...

1. Don't think of them as layers. It is a poor analogy borrowed from 2D CAD which borrowed it from the old manual pin board on onion skin practice. Think of them as collections of elements that belong together.

2. It is important to make a distinction between construction components and annotations. The former representing the actual stuff the building is to be made of and the latter being instructions for how to build it. It is a good rule to keep these on separate layers.

The US NCS (based on the AIA CAD Layer Guidelines) does this with the ANNO tag within each discipline, ie A-ANNO, C-ANNO, etc. Some prefer to separate the annotations completely with a special leading character or code such as: *, _, ~, 2D, etc. This groups these layers typically at the top of the list.

Of course as ArchiCAD has advanced to provide separate views for each drawing type the need for multiple ANNO layers has diminished dramatically. A single one could suffice except for the drawings that need to share the floor plan view.

3. It is important to establish clear naming conventions, the list of your standard layers, and to keep this reasonably concise. Long layer lists can be real time wasters and make the combos difficult to manage. Make rules about adding layers as well. Things can get screwed up pretty badly if users are making up new layers willy nilly.

4. There are pros and cons to using standard, semi-standard and fully custom layer names. The best choice will depend on the particular practice and personal preferences.

Fully standard layers (such as strict adherence to NCS) have the advantages of being already worked out, likely familiarity for new hires, and compatibility with some other practices and consultants.

Semi-standard layers (such as NCS with adjustments) can retain the familiarity while allowing the flexibility to adapt to your particular needs. It can also be handy for some firms to keep their layers distinct from other they coordinate with. Using A_ANNO, etc instead of A-ANNO keeps your layer contents from getting mixed up with stuff from other folks.

Completely custom layers are good for firms with very particular needs and a lot of firms use standards they developed for themselves long ago. If the advantages aren't obvious for you practice this approach is likely to be a lot of extra work for little gain.

Re: Layers

Anonymous — Sat, 06 Jul 2013 00:10:15 GMT

Thanks for the tip Mark, I'll definitely take a look at those posts. I believe I have over populated this particular test project, but never mind it's all a learning curve for me right now

@David: I have the AUS Trial installed, but have used the and prefer the INT version. I understand the AUS version has dedicated layers, layer combinations, pen sets, MVO etc… but coming from a Revit background I've found the INT version easier to understand, and is helping me understand how Archicad breaths.

Having said that, I totally respect your advice and know I really should be using the AUS version, but for now I feel much more comfortable with the INT version.

@Aaron: I'm loving layers and like said above, have most likely overused them in this particular situation. Though Revit doesn't use layers, I don't really find it a deal breaker for me right now, you kind of get use to it.

@Matthew: I think the reason I created so many layers was to be able to "turn off" certain elements (individually) in 3D. I'm realising now maybe I could have just as easily used the marquee tool in a plan view, but never mind, I'm slowly learning

Re: Layers

Anonymous — Sat, 06 Jul 2013 12:15:49 GMT

blimp,

The art of managing what you see and thus work on in AC is the use of views (view map). Views have associated settings. I show a side by side comparison of a dimension partition plan vs electrical plan, the only change between them is the view, thus with a single click - I can:
1) turn on/off layers (ie dimension sets for lighting vs partition dims, etc)
2) set the Model View (window in outline only, no wall skin, no wall fills, etc.)
3) change pen sets (gray walls vs black walls)
4) change the renovation filter (no change on these images, but obvious uses)
5) structure display (remove all but core of composites when req'd)
6) scale (enlarged plans vs site vs dimensioned plans vs key plans, etc)

So when people say I don't use this or that feature of AC. It is a personal issue. All the features used well and in combination, make AC able to represent the same information in so many different ways - you will be amazed AND save time once you have these things set up in your own template.