Clash Detection Using Dynamo/Revit

[RAllan]

Hey Dynamo Community,

I’ve recently come across the following clash detection video on autodesks website, but it is extremely vague, and doesnt really give a tutorial for first timers (it kind of assumes you have anything set up already/have used it before). The video is below;

https://knowledge.autodesk.com/support/revit-products/learn-explore/caas/screencast/Main/Details/9cfe3fad-3432-4d07-9110-c4a14a7af2c4.html.

I am curious of 2 things…

1. Does anyone have the XML map known as exchange_Map/know where to download it as seen in the video (found at 0:52-1:37)?

2. Does anyone have the Dynamo project that he is using for this (found at 1:42-2:46) or know where I can access it? I’m kind of new to dynamo and I’m not sure I can recreate that

The ability to view clashes as seen in this video would be a HUGE time saver as I can instantly port over to the clash within Revit and fix it in real time 3D, rather than having to locate the floor/gridlines the clash is on, then cut sections/create 3D views to fix the issue.

Thanks in advance for your help
Robert Allan

[zhukoven]

@RAllan, the link you provided doesn’t seem to work - ‘Page not found’.
I’m not sure that this is what you’re looking for, but have a look at AU class by @Dieter_Vermeulen (CS21553: Construction Dynam(o)ite—Explode Productivity with Dynamo).

[RAllan]

Very weird Zhukoven, here is the link again, and hopefully this works:

How to visualize clash into revit with Dynamo | Revit Products | Autodesk...

Also, the tutorial you presents assumes that I have Naviswork installed. Currently, my company doesnt use Navisworks, so I am only able to work with .xml files that I receive from the coordination guy. I have managed to complete question #1 in that I was able to create a map using the .xml, and get it to look like his. Now just working on my Dynamo project/revit sphere family

[RAllan]

After doing some more work using the video above, I was able to create a dynamo project to replicate what he has on his dynamo project, as well as the excel file which plugs into it. My problem now is that I get errors throughout the project even though everything is just as he has it (files attached through a google drive zip).

If anyone has the time to look through these it would be much appreciated, I dont know where I am going wrong in my Dynamo project.

Zip file contains:

1. "Project - To Open" - This is the Revit file you will open with 2 pre-set clashes
2. “Project - To Link” - This is the Revit file you will reload as a link to the above file
3. “Generic_Models-Clash_Sphere” - This is the transparent clash sphere as shown in the above tutorial video
4. “Clash Detection Workspace.dyn” - This is the dynamo workspace I have created as per the above tutorial
5. “XML-base” - This is the excel document that you open on the very first node within dynamo (this has the clashes from the above revit models as per the video tutorial).

Hopefully I can get some help on this as it has really stumped me. I’ve done everything the video said, yet I’m still getting errors

Thanks in advance,
Rob

https://drive.google.com/open?id=0B_Jv4a6vQL8lMENmaXR2MjBWemc

[Andrew_Hannell]

Hi Rob

Could you either post details of the Dynamo errors you are getting (best option) or make that Google drive link public.

I (independently) came up with a similar approach to Dieter, but instead of using Excel to convert the XML, I used a tool called Pentaho. Once it is set up, it is a one-click operation to covert multiple XML files into nice tabular data ready for Dynamo.

Dynaworks is also an option.

These posts cover some parts of it:

XML get Values of all nodes with a specific name below root

Hi, i need to get Values out of an XML. The xml is too big for trying so i made an small XML. I use the bakery package. I try to get the value of “from”, “heading” and “body”. I tryed a lot of different xpath, but it didn’t work. Is there a better way to get to my goal? Any help would be good. [image] note.xml here is my dynamo workflow: [image] here is a example how it can be done…but i don’t get so far and i don’t think it is the best way to do it. [image]

Dynamo: performance

Hello, My latest Dynamo project is a ‘clash importer’ that creates a sphere with various attributes of the ‘clash’. There are some 3rd party applications that do the same thing- i.e import the XML report from Navisworks and place a sphere marker at the coordinates. Using the tools in Navisworks, it is difficult to get a sense of the big picture of where the clashes are and their status. Refer below, colour coded by status in Navisworks I’m using Pentaho to get the XML into a better format- this …

Linked Model Element ID Extraction From Navisworks Clash

hi Beau I’ll explain the principle rather than giving you a complete solution. Say you have 2 clashing objects- a wall and a duct. The ID of the wall is 210338 and the duct is 709842 When you use the clash detective in Navisworks and export an XML file of the clash, you get information such as the clash number, XYZ coordinates of the clash, and IDs of the clashing objects [image] [image] So using this data in Dynamo, you can mark the position of the clash- say placing a family at the XX…

Andrew

[RAllan]

Hey Andrew,

Thanks for your help with the links. Since my last post, I was able to get my dynamo workspace running perfectly. My clash sphere now appears right where the clash is at, and everything seems to be running perfectly on multiple test projects. I have just saved myself HOURS of time on future clash projects as the sphere can be scheduled, then highlighted in model for quick viewing of clash. Cannot believe I never dipped into Dynamo before, I’m curious to research more on how it can speed up other processes!!!

In order to clean up the chat, I have created a new topic with the last question I have regarding clash detection within Dynamo. If I can get this question solved, I believe my troubles are over when it comes to coordination of clashes! (Clash Sphere Data Question)

[florian.ferenc]

Hi everyone,

For my work of end of studies, I have to do a Revit model and then modify it with Dynamo.
I contact you because I am very interested in the clash detection program.

I still get errors when I run the schedule with the node String.ToNumber. I think the schedule does not recognize the Excel’s cells format.
Do you have an idea of why? What can I do to solve this?
I’ve tried to change manually the format but it goes wrong again.

I know this forum was made two years ago but I try anyway.

Thank you very much,
Florian

[sbolandin]

Hi,

Would you please send the link again?