Season's Greetings from Phil-osophy in BIM!

What a busy year it has been! 2015 has almost come to an end.

Best wishes for joy and happiness this Holiday Season and a magnificent New Year!

AU 2015 Next Week!

Time surely flies! Autodesk University is just around the corner. I am very excited to be able to attend this conference again. This will be the first time since I joined HKS in January this year. We will have a big group from different locations representing the office to attend the event.

My colleague Tim Logan will present his class "Cross-Platform Plug-ins For Revit, Dynamo, and Beyond" that discusses his process of creating our in-house custom tool for Revit, Dynamo and Rhino.

Besides, I know there are a number of new techs such as Insight and Stingray from Autodesk that I am hoping to see first hand and meet up with the developers there.

I look forward to seeing some old friends and hope to make some new ones as well. Please be sure to say hello if you are going to be at AU.

Open(ing) Sesame

Few days ago I was answering some questions to a project team and noticed the project has many openings using "Edit Profile" on a wall. I couldn't help but commented this was not a very efficient way to model opening in Revit.

Repetitive openings should be avoided using Edit Profile

Typically there are 3 common ways to create wall openings in Revit. They are "Wall Opening" tool, "Edit Profile" and using family. In this post, I will explain some pros and cons on these tools and offer my perspective on the best practice when it comes to create openings.

Wall Opening Tool

The tool is under Architecture (Current version) or Home (prior 2014) tab --> Opening --> Wall. This is probably the easiest way to make opening in Revit. You pick your target (your wall) then define the area as a rectangle shape, Revit will make that opening for you. The upside is it is very easy to apply, very easy to make adjustment when needed. It can also be copied to multiple instances to the same wall. In addition, you can apply this in a curve wall too. So what's the limitation? There are some. This tool can only make rectangular shape. If you need anything other than that, you won't be able to do it at all. Autodesk, why can't you fix this already?

Edit Profile

This is also a native tool in Revit. You select any wall, the "edit profile" icon will show up via the option bar. You can start editing the shape of the wall in the "sketch mode"; make any changes you need, then click the check icon to "finish". I often found many users misuse this great tool in Revit and left with some unexpected result.

Cons:

If you use edit profile to make openings, they can't be copied. If you need to "get rid" of the opening, you will have to activate the edit profile and delete the sketch. Plus, it doesn't work on curve wall either. What if you need to schedule the openings as "case opening" for your project? Using this tool will not get you anywhere either. Another reason this tool bothers me so much is that it is hard to tell if the opening is made using this tool. Since you won't be able to "select" it like you would with "wall opening" tool, sometimes it is very hard to locate them when the project fully developed.

Using Family

This is probably my preferred method to make any openings in Revit. The user creates a family (it can be wall hosted, face based or even using the feature "cut void when loaded) usually by using void or "opening" to cut out the family host. You can then load it into the project and cuts the wall with the family.

Why this is better? It really depends on what your purpose is, how you create the family or how you use it. First of all, you will need to have the knowledge to build a proper family, in which case, it will probably be better if this is a parametric family to be flexible to use it in project.

Using family has one advantage that the other two don't. Often times I have a need in a project to make a recess (faux opening) in a wall, I could set a parameter to control the void thickness, thus I can choose to cut the opening with different depth in a wall. If you need the openings to be schedule in a project, this will be come in handy. Besides, you can copy multiple instances of the family on a fly in a project.

Cons:

If you don't know how to make a proper family, you would end up having more issues using this method. Second, you would have to have different families for different shapes (one for rectangular shape, one with an arch top, etc...).

Conclusion

All of the above methods are valid ways to create openings, it is important to know the differences between the pros and cons. What's more important is you should stick with one method and keep it consistent throughout the project so the team can have a better expectation.

No Strings on Me!

Recently I am working on making some changes on an existing family and notice there is a string of parameter that is "stuck"

For some reason, this parameter "Rough Width" in the family cannot be deleted. I have seen this in the past and one of the reasons has to do with the family has been upgraded year after year.

Question is "How do we get rid of this parameter?"

First, add a new reference plane on the side like the image.

Then, select the parameter and choose "Edit Witness Lines" from the option.

Have the dimension string snapped to the new reference plane, then select the reference to remove from the original location.

Once this is done, go ahead and delete the ref. plane. Without the ref. plane, the dimension string will be deleted.

This little trick can work on pre-existing parameter from the family template such as casework, baluster and window (wall hosted) family.

Printing Bug

I came across with this issue from one user the other day. They have some interior elevations on the sheet that didn't come out as expected.

After printing it as PDF file, one of the interior views just showed up blank! What's interesting is the texts and grid lines showed but everything else disappeared.

I ended up reaching out to Autodesk and they suggested to try Raster Processing; and sure it did the trick. Using Raster Processing mode in the Print Setup was able to fix this issue. Usually raster mode is not needed unless you are printing with shadows, decal images or have render view as part of the document. This is one of the situations that this sheet had no such thing but will need raster mode to address the issue. 

You can learn more about Vector Processing vs. Raster Processing from Autodesk HERE.