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Top TIPS for Efficient Navisworks Clash Detection


Navisworks Clash detection using Building Information Modeling (BIM) helps architects and contractors speed up projects by spotting clashes during the design stage. Effective Clash Detection workflows help to avoid multi-level design revisions that can lead to budget overshoot and project completion time delays.

Designers and architects may now generate complicated building designs without worrying about the quality of construction documents thanks to BIM technology and clash detection. Due to the advanced nature of clash detection and BIM software suites, an alteration to a single component is automatically reflected in all perspectives. Furthermore, because everything is in place, knowledge transfer is seamless, eliminating manual labor and increasing efficiency.

Navisworks Extensions 

1. NWC Files (Cache Files)

The NWC file format isn’t meant to be used in everyday interactions. It has a cached version of the Revit model geometry that has been transformed. It allows users to open files saved in the NWF or NWD file formats in Navisworks. NWC files are used to speed up the loading of the model when it is opened again. It does not, however, allow users to save NWC files.

2. NWF Files (Federated Files)

All of the model files that are being used are indexed in an NWF file. It saves all of the data that has been opened in Navisworks. When working on an ongoing project, it’s best to use the NWF file format because any changes or updates made to the source drawings will be reflected the next time the model is accessed in Navisworks.

3. NWD Files (CAD Files)

Users can only save NWD files if they have a licensed version. NWD files are lighter than CAD files (reduced loading time). Even if they do not have Navisworks, they can utilize Freedom to publish and share the compiled version of the ongoing project for others to review (free viewer). The user can keep the source file and distribute a secure NWD file in this way.

Top TIPS for Efficient Navisworks Clash Detection

Utilizing the best practices for Navisworks clash detection will make the clash detection process go more smoothly. These guidelines are industry best practices that can assist architects, engineers, and contractors in comprehending the timeline of the Navisworks clash detection procedure.

Following are the top Tips & Best Practices for Navisworks Clash Detection:

(I) Set Clash Rules and Templates (search sets vs selection sets)

It is critical to establish clash rules and templates to streamline the clash evaluation process. For some, a single rule or template may not be adequate. As a result, once the rules and templates are in place, it’s critical to double-check the results.

(II) Import & Export Clash Test as XML

Construct a consistent clash review test for the entire project/company using Navisworks’ ability to export or import clash report data in XML format. Subject to the test selection, we can repeat the same collision test technique for the next task/project.

Selection Sets vs. Search Sets 

Selection Sets

“Static groups” of objects are what Selection Sets are. It entails manually adding “Hide Items” and is only applicable to the current project.

Search Sets

“Keyword search” in “Find Items” generates “dynamic groups” of sets called “Search Sets.” Search Sets can be imported or exported and reused across several projects.

(III) Grouping Clash Results

Since there will be many clash results, it is necessary to categorize them in an ordered manner. The name convention that should be followed is determined by the group. Then, by just clicking the “group” in Navisworks, we can access the total clash report view. The group’s name should be short and descriptive, and everyone should use it consistently.

(IV) Clash Report Formatting with your Company’s Logo

Navisworks supports a variety of clash report forms. HTML is one useful format for displaying information in a tabular manner within limited spaces. Navisworks clash detection offers a variety of options for displaying data according to the user’s preferences. As we described recording all conflict report results as Viewpoints and sharing those results in NWD file format. Users can easily replace the Navisworks logo with their brand’s name, logo, etc.

(V) Clash the BIG Stuff First to Reduce Tolerances in Steps

During the early stages of a project, this method can be extremely beneficial. It’s critical to double-check the bigger items first to ensure that they don’t conflict. An elevator may collide with the stairwell in the design. This strategy highlights the main issues and the necessity of resigning rather than addressing the conflicts. Many structural elements, such as tunnels, sewers, or existing foundations, cannot be relocated or modified, and if conflicts arise, other disciplines can be moved or altered more simply and inexpensively.

(VI) SwitchBack between Navisworks and Revit

Open the same version of Revit that you used to export the NWC to Navisworks. A dialogue box will show requesting you to go to the RVT file if you try to utilize SwitchBack and the RVT file is not in the same location as when it was stored. When you initially use SwitchBack to import a Revit file, Autodesk Navisworks creates a 3D view depending on the projection view mode you selected. Unless the projection view mode in Autodesk Navisworks is modified, the same projection view mode is loaded the following time SwitchBack is used to load a Revit file.

(VII) Dynamo for Navisworks & Clash Sphere Generator Plugin

If a team member does not have Navisworks Manage and needs to use the SwitchBack function or study the grouped clash results. The screencast link will show how to depict clash positions in Revit using Navisworks Excel and Dynamo.

BIM One offers a Clash Sphere Generator Revit Plugin that does the same thing. Once the report is exported in XML format by Navisworks, it scans locations and builds clash spheres in Revit. Every sphere has an identifying number, which makes it easier to manage and solve using Revit schedules. For reference, this file can be a new connected RVT model. All conflicts/interference issues can then be viewed and resolved directly within the discipline model by the project team.

(VIII) Compare Two Versions of the Model

Users of Navisworks can compare multiple versions of the model, however, few are aware of this feature. When working on a BIM project, multidisciplinary teams are involved, and several modifications can be made. Any changes to the model file may be detected, but it may be impossible to determine what has changed. The Navisworks Compare Tool allows the user to compare any two differences, which can be files, layers, groups, or simple geometry.

(IX) Visualization (A360 Cloud Render & Ray Trace Rendering)

Using Autodesk 360, you may render your scene. These are cloud-based, faster to use, and come in a variety of formats, including panoramic view, still image, interactive panorama, color-coded illuminance, lighting analysis, stereo panorama, and more. By scanning the QR code or sharing the URL with the client, the user can gain access to it quickly.

Renderings (with daylight or interior lights) can be done “on the cloud,” and files can be seen in the Render Gallery. The user will receive an email once the task has been finished. Continue to work after submitting a viewpoint. If you need local copies of the images, you can also download them.

(X) Quantification

Another key element of Navisworks is quantity takeoff, which allows the user to construct a very precise quantity takeoff based on several 3D source files. It also works with DWF sheet set 2D takeoffs.

(XI) BIM 360 Glue Shared Views with Navisworks

Since the 2016 version of Navisworks, real-time BIM collaboration has been one of the main features. Users can open, add, and align BIM 360 glue project models in Navisworks, which can then be saved as a combined model. The model is available in the cloud for project review, collaboration & design coordination as soon as it is saved in Navisworks. BIM 360 Glue models can be opened in Navisworks and used with various tools such as increased quantification features & enhanced quantification features.

Navisworks has become indispensable in BIM design workflows because of its remarkable capabilities such as time-based clash detection, photorealistic visualization, quick file sharing, and automated referencing of numerous CAD files. Civil engineers, architects, and structural engineers, as well as mechanical, electrical, and plumbing experts, are increasingly using Navisworks in construction projects. Navisworks Clash Detection is also being used by non-engineers who need to visualize a project.

The Future is BIM Shaped, don’t be SLOW

Finally, as time passes on, Clash detection programming and software will get even more impressive. Level 3 BIM—depending on the fate of BIM innovation, it will be possible to work on a specific collaborative and coordinated construction model, rather than the traditional way of combining numerous models to form a coordinated model. This would ensure continuous review and correction, reducing the likelihood of project disputes.

INDOVANCE Inc delivers a full range of BIM modeling projects. We work on parametric family creation, clash detection, model creation for all LOD (Level of Detail), 4D, 5D, and 6D support, and model phasing, as well. We also provide complete support for CAD to BIM, point cloud to BIM, and PDF to BIM conversions.

For more queries regarding any of the above-mentioned topics, feel free to connect with us on our website www.indovance.com, or contact us on +1-919-238-4044.

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