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How to Detect Collisions with Clash

 

Clash Reports

A clash is a structural conflict within the 3D model. Clash Reports provide detailed views of these clashes in the 3D model, showing clearances as a positive measurement and a clash as a negative measurement. There is also the ability to create a ToDo from a clash report and assign it to a specific person or group. A Clash Report can also be exported to a CSV format.

Note: There is no significant difference between the steps to work with a Clash or Clearance report. To avoid redundant steps to work with a Clash report and a Clearance report, a Clash report is used as an example in the following section. 

 

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Trimble Connect Web

Create A Clash Report
Clash Reports can be created when viewing a 3D model.

  1. While viewing a 3D model, click on the 'Clashsets'
  2. Once the Clashsets tab is selected, the top right of the section will show the Clashsets options of creating a clash or deleting a clash.
  3. When the New Clash Report prompt appears, fill out the required values and click submit. Clearance detection is used to find objects that are within a specified distance of one another. Clash detection is used to find objects that collide or interfere with other objects with a specified tolerance. The other 2 options are for ignoring detection within the same file and/or the same (object or element) type. Ignoring detection within the same type is useful within detecting all clashed within the walls or pipes is not useful whereas detecting clash between the wall and the pipe is. Clash report can be shared with other users, groups.
  4. Once the clash has finished processing, the clashes will be shown on the model with the list of clashes on the right pane.

Create a ToDo from a Clash Report
A ToDo from a Clash Report cab be created and assigned to a specific person or group.

  1. Click on the Create ToDo button to create a ToDo based off of a specific clash. A specific clash can be selected on the right hand pane of the window.
  2. Enter the description and optional information such as the Priority, Due Date and Assignee then click on Submit.

Export a Clash Report:
A Clash Report can be exported to a CSV for offline use.

1. In the Data page, select the Clashset tab, select the Clash Report and click on the Export button.

 

Trimble Connect Desktop


The Clashes list displays the clashes between conflicting model objects.
Clash sets and clash reports are created in the Trimble Connect web interface. You can view the clashes and clash sets in the Trimble Connect desktop interface.

You can dock or undock the Clashes list, and move it around the 3D view.

Select clashes in the 3D view

  1. Move the pointer over a clash.
  2. Click the conflict symbol .
    The clashing objects are selected in the 3D view and in the Clashes list. If there is a number next to the clash symbol in the 3D view, the clash symbol indicates that there are several clashes close to each other. The number indicates the number of clashes in the cluster.

Select clashes using the Clashes list 

  1. In the Clashes list, move the pointer over a clash. The selected clash is highlighted in the 3D view.
  2. Click the clash in the Clashes list.
    The clashing objects are selected in the 3D view.

Select clash sets using the Clashes list 

  1. In the Clashes list, move the pointer over a clash set.
    The clashes of the selected clash set are highlighted in the 3D view.
  2. Click the clash set in the Clashes list.
    The clashing objects of the clash set are selected in the 3D view. Clashes that are created with outdated model version are shown as red in the clash list, and they cannot be selected and they are not visible in the 3D view.

View detailed information on a clash
You can view detailed information on a clash in the Clashes list . The clash information is displayed in the clash property pane.

  1. In the 3D view, select the conflict symbol .
  2. Right-click and select Open.
    The clash property pane with clash information is displayed.

    Alternatively,
    • in the Clashes list, double-click the clash
    or
    • in the Clashes list, select the clash, right-click and select Open.
    In the clash property pane you can click the  button and view the clashing objects in the 3D view.

View detailed information on a clash set
You can view detailed information on a clash set in the Clashes list . The clash set information is displayed in the clash set property pane.

  1. In the Clashes list, select a clash.
  2. Right-click and select Show clash set.
    The clash set property pane with clash set information is displayed. You can check, for example, who has created the clash set and when.

Share a clash set
You can share the clash set only if you are the administrator of the project, or if you have created the clash set.

  1. In the Clashes list , select a clash set.
  2. Double-click the clash set to open the clash set property pane.
  3. Click the button.
  4. Select a project member or user group from the list, or start typing the name of the user or user group to filter the list.
  5. Click the button to share the clash set.
    The project members who you have shared the clashes with are listed in the Shared with box. Alternatively, you can add clashes as attachments to ToDos and this way share the clashes with some additional information.

Hide all conflict symbols in the 3D view
You can hide all the conflict symbols  in the 3D view.

  • To hide the conflict symbols in the 3D view, click .
  • To show the conflict symbols in the 3D view, click .

Hide conflict symbols of selected clashes or clash sets in the 3D view
In the Clashes list , click the visibility symbol  of a clash or clash set to hide the symbols in the 3D view.
Note that if you hide some of the conflicting objects, the conflict symbols attached to those objects become transparent.

Zoom in on conflicting objects in the 3D view
Select a conflict symbol  in the 3D view and double- click it.

Sort clashes
You can group clashes by clash sets or by object names.  Click the arrow in the  box and select an option.

Remove clash sets
In the Clashes list :

  1. Select a clash set.
  2. Right-click and select Remove.

 

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