Quick Start Guide
Do you need an easier way to see and understand Navisworks clashes in context? Creating a section box around each clash and making its surrounding elements transparent is the answer. Even better, this is a one-click job with RV ClashBox!
WHY CLASH REVIEW TAKES SO LONG
Navisworks is brilliant at quickly finding clashes between BIM models of all disciplines. However, the default clash viewing mode makes it quite hard to clearly see your clash results in context, especially on big projects. Out of the box, Navisworks only allows you to hide or dim surrounding elements, which effectively just shows them in wireframe mode. Once you have a large number of objects in the combined BIM model, it will start to look like this massive, confusing spider web:
If you choose to hide the context instead of dimming it, clashing elements will clearly show. However, we now have no clue where in the building this clash occurs. Without this knowledge, it can be difficult to resolve this clash without affecting other aspects of the design.
Of course, you can try to locate the clash in the original modelling program such as Revit or Archicad. Whether you do this manually or by automated means, this extra step will consume more of your valuable time. Additionally, clashing elements are shown differently in Navisworks and the original modelling application. This means you’ll spend extra time making sure you’re looking at the same thing in both windows. Even worse, the original 3D model may have been further developed by the design team, making the clash no longer visible there.
We used to struggle with this exact problem, for years. Back then, we spent many hours manually making these views presentable in upcoming design review meetings. We had to:
- Export clashes to viewpoints, with result highlighting preserved
- Select clashing elements in each view
- Enable sectioning in view
- Set the sectioning type to Box
- Set this box to fit the current selection
- Enlarge the section box on one or multiple sides to see more of the context
- Unhide all other elements in the model
- Select all these other elements
- Make them transparent, for example by 75%
- Update the saved viewpoint
- Repeat all these steps for the other hundreds of clashes!
On top of that, we needed to do all this before each meeting. Let’s face it, design review meetings are long, but there won’t be enough time to adjust each view while everyone else is watching your every click. Fancy firing up Revit as well to show the same clash? You’ll quickly put them to sleep! In reality, some laptops we take to meetings aren’t even strong enough to open our Revit models. It’s clear that we need to do all this preparation in Navisworks only, and quickly.
OUR 1-CLICK SOLUTION
Well, after so much overtime, we created RV ClashBox to automate all that. It’s a nice little Navisworks plugin that generates sectioned views from your clash tests, and optimizes all these views to instantly make them presentation-ready!
On launch, RV ClashBox will list all clash tests you have in the Navisworks file. You can then select one or several tests. As you add, update or remove tests in Clash Detective, RV ClashBox will update this list in real time.
Next, select how you want clash views to look like:
- Set whether only clashes of certain statuses should be processed, for example only New and Active ones.
- Set whether new viewpoints should be in perspective or orthographic mode.
- Set the transparency ratio for context elements, i.e. all elements visible in the view other than clashing objects identified in each clash.
- Set the section box’s offset around clashing objects. You can control this offset separately for each direction: Front/Back, Left/Right, and Up/Down. For example, if you’re looking at clashes between MEP items above the ceiling and want to also see the room below each clash, simply increase the Bottom offset value.
Next, click Generate Views and watch RV ClashBox automatically create new viewpoints! Of course, this can take several minutes if you have thousands of clashes in the selected set.
Once the process is complete, open Navisworks’ Saved Viewpoints panel and you will see new views organised into folders named after your selected tests. Each view will have clashing elements highlighted in the original red and green colors used in Clash Detective. All context elements will show in your selected transparency ratio.
