Faster Project Delivery with BIM Clash Detection Procedure

Today, BIM firms specialize in the virtual construction of 3D BIM models through various inputs such as contract documents, specification sheets, design documents, equipment submittals, etc. BIM companies in USA seek a robust BIM clash detection procedure to validate designs for constructability, performance and maintenance. Top Revit BIM services USA  are following SMACNA (Sheet Metal and Air Conditioning Contractors’ National Association), IPC (International Plumbing Code), UPC  (Uniform Plumbing Codes) and other local building codes to minimize conflicts. BIM service providers in USA ensure complete compliance with the building rules and regulations to avoid complications at later stages of construction.  

Let’s take a look at the BIM clash detection procedure.

Know more on BIM Clash Detection Procedure adopted by Tejjy Inc. BIM Modeling Firm

How do top BIM companies work with BIM clash detection procedure? 

BIM services in Texas, Florida, California, Virginia, Baltimore, Houston and other areas in DC implement 3d modeling, 4d sequencing,  5D BIM cost estimation, 6d BIM-enabled facilities management for smooth collaboration amongst building services. The BIM clash detection procedure of the BIM modeling company is planned competently to speed up project delivery. BIM consultants produce the final model by resolving clashes through re-routing ductwork, modifying elevations and resizing ducts. Using Revit modeling services, they work closely with project stakeholders for complete clash resolution amongst architectural, structural and MEP services. Detailed mechanical shop drawings obtained from the BIM model help to eliminate clashes.  


  • Meeting Project Objectives through BIM Clash Detection Procedure

The BIM companies often divide the BIM model into separate levels and zones for coordination amongst various trades, focusing on a specific location of the building. The breakups helped to deliver smoothly, avoiding all technical glitches.

BIM clash detection procedure adopted by BIM services in USA involves accurate model creation and shop drawing production  to meet various project objectives like:

    • 3D Visualization
    • 3D MEP Coordination
    • Clash Mitigation
    • 4D Scheduling
  • BIM Quantity Take-off

Planning an Integrated BIM Clash Detection Procedure 

  • Making an effective BIM Execution Plan – BIM consulting firms provide a framework to the construction project team for implementing BIM services. The plan delineates the responsibilities of every party, as well as the scope of information to be shared with relevant business practices. The BIM Execution Plan addresses how the construction project participants would count on data from the virtual BIM models.


  • Creating a dedicated FTP Site – The establishment of a dedicated FTP site is essential for an effective BIM clash detection procedure. This is significant for uploading 3D models produced by BIM modeling companies and other subcontractors. The model becomes accessible to all project parties for coordinating architectural, structural and MEP services. BIM modeling firms integrate all 3D models into a consolidated master model, which is available to all parties for review. The master model gets updated daily and downloaded from the FTP (File Transfer Protocol) site. Every team involved in the BIM clash detection procedure gets a notification once a file gets uploaded to the FTP site. BIM modelers follow the same process while posting a consolidated 3D model.


  • Integrating BIM Model in Navisworks – BIM service companies provide an integrated composite model in a Navisworks file, including view sets of clashes and other constructability issues, revealed during the process. The team members review the saved views before the next coordination meeting.  BIM clash detection procedure also involves a 3D grid for incorporating into the Navisworks file. This provides the viewer with a quick point reference during model navigation.


  • Clash Coordination – The final stage of the BIM clash detection procedure is clash coordination. BIM modelers review the consolidated master model and save views in the coordination meeting with clients and subcontractors to discuss and resolve identified problems and adjust 3D models accordingly. The revised models get uploaded to a central FTP site and integrated into the consolidated Navisworks file. BIM engineers run a series of clashes and repeat the process during the coordination session. BIM clash detection procedure helps to detect irresolvable clashes and translate them into Request for Information (RFIs). Then a supplementary Navisworks file is saved and posted with the meeting date in a separate Navisworks Coordination folder.


Read more about the BIM clash coordination procedure

Steps Involved in BIM Clash Detection Procedure using Navisworks:

  • Step 1:
    • Considering 2 design models in Navisworks
    • Uploading existing design model of service into Navisworks software platform
  • Selecting any 2 design models for producing clashes in the coordinated model
  • Step 2:
    • Loading the 2nd design model for coordinating with the 1st independent model
    • Merging 2 separate models into a single model
  • Undertaking further clash detection
  • Step 3:
    • Starting the BIM clash detection procedure
    • Selecting 2 BIM models from the loaded ones
  • Naming the report and running clash test
  • Step 4:
    • Detecting potential clashes between models with status details and conditions
    • Providing the status as active, new, resolved, etc.
  • Re-running the clash test after design modifications
  • Step 5:
    • Choosing all details in the clash report
    • Selecting available options for the report format like PDF, HTML, etc.
  • Producing detailed reports and images showing clashes in 2 designs


Know more about the benefits of the BIM clash detection procedure

Value Engineering through BIM Clash Detection Procedure – Practical Instances

BIM clash detection procedure facilitates in adding value to construction projects by identifying:

  • Missing Input: 
  • Dimensions of upper portions of a unit not provided by clients
  • Dimension missing in the submittal
  • Coordination Issues:
    • A clash between wall & structure
    • Riser clashing with structure
  • Flue duct clashing with structure
  • Input Inconsistencies:
  • A mismatch between architectural and sheet metal models
  1. Connection Problems: 
  • A unit length greater than room space
  1. Space Constrain: 
  • DOAS (Dedicated Outdoor Air System) unit could not be fitted in the room
  1. Constructability, Aesthetic & Maintenance Issues 
  • Grid line far from ducts, creating aesthetic problems in a particular building level
  • Flue Duct Down points in the submittal not matching with equipment outlet port and  clashing with other services
  • Exhaust duct clashing with structural services at a particular level

An effective BIM clash detection procedure facilitates in planning an intelligent BIM model, enabling the team to plan and coordinate every aspect of project design development, construction and maintenance. Seeking a BIM clash detection procedure helps to identify constructability issues at the pre-construction stage by detecting clashes, thus avoiding work stoppage, rework and wastage of time, material and manpower. To implement a robust BIM clash detection procedure, contact the BIM modelers of Tejjy Inc. at 202-465-4830 or [email protected].


Related articles on BIM clash detection procedure:

BIM Clash detection in Florida

BIM Clash Coordination Gone Viral in New Jersey, USA

Comprehending BIM clash detection procedure

Clash Detection service – An Initial step in the BIM coordination process