Construction delays rarely begin in the field. They begin in coordination.
When trades design in isolation, conflicts surface during installation, when fixes are expensive and schedule flexibility is limited.
BIM coordination and clash detection provide contractors with early visibility into trade conflicts before mobilization.
Eracore talks about how this all works in this article.
Why Contractors Rely on Coordination Before Breaking Ground
Contractors rely on BIM coordination to prevent:
- Late-stage design conflicts
- Field rerouting of MEP systems
- Schedule compression due to trade interference
- Change orders triggered by spatial conflicts
- Prefabrication scrap and rework
A Quick Look at How BIM Coordination and Clash Detection Work
Take a look at BIM coordination services and clash detection services and their importance in any construction project:
Aspect | Description |
Purpose | To find and fix design conflicts before construction begins |
Who Uses It | Construction teams and designers |
Key Tools | Navisworks, Revit, BIM Collaborate Pro, Solibri |
Key Focus | Make sure the plumbing/power (MEP BIM services), building frame, and design parts fit. |
Main Benefits | Less clashes, less wasted work, better team concentration, and cheap. |
Results | Clean, accurate models that are ready to start building. |
What is BIM Coordination?
BIM Coordination is merely the incorporation of all the design models (such as the architecture, plumbing, and the structure) in a single file so that the entire project team can view it collectively.
Also read: How to Write a BIM Execution Plan (BEP) That Saves You Headaches Later
What is Clash Detection?
Clash Detection is a process that automatically finds mistakes where two parts of the design physically overlap or run into each other (like a pipe going straight through a beam).
Also read: What is Clash Detection in BIM?
Tip: Start coordination as early as possible as this helps with fixing clashes easier, later on in the project.
Why Is Clash Detection Important?
In construction, small design flaws cause major problems once the building starts. Clash detection fixes this by catching those mistakes early, before materials are ordered or installed. By checking all trade models together, teams spot where systems overlap and fix them during planning.
Clash detection is important because it saves time and money. It lets the team fix building problems on a computer while still planning. This is much better and cheaper than fixing those same problems once the actual construction has started.
The Financial Impact of Unresolved Clashes
Unresolved clashes typically result in:
- Labor rework
- Material waste
- Equipment relocation
- Delayed inspections
- Compressed downstream trades
A single duct reroute in a high-density ceiling can trigger multiple downstream trade adjustments.
Coordination protects margin.
Tip: Always check for clashes often while coordinating, not just at the end. This is the easiest way to avoid expensive
What Are Some Common Types of Clashes in BIM?
Clashes happen when building parts don’t fit right in the 3D model. Some are easy to see, but most only appear after all trade models are combined.
- Hard Clashes: When two objects occupy the same space, like a duct passing through a beam or a pipe cutting across a cable tray.
- Soft Clashes: When there isn’t enough clearance for access, movement, or safety — for example, a valve placed too close to a wall.
- Workflow Clashes: Workflow clashes are simply timing problems in the building schedule. For example, a workflow clash is when you try to install a large machine before its base is even ready.
Who Owns a Clash?
Not every clash is equal.
Ownership depends on:
- Design intent
- Trade priority
- Structural constraints
- Equipment requirements
- Code compliance
In most projects, structure rarely moves. Mechanical systems may adjust. Electrical routing may shift depending on clearance requirements.
Effective coordination establishes a clear hierarchy early in the BIM Execution Plan to avoid trade disputes and late-stage redesign.
Without defined ownership rules, coordination meetings turn into negotiation sessions instead of resolution sessions.
How the Clash Detection Process Works
This process helps teams find and fix design problems early to avoid expensive mistakes later.
- Put all the 3D files together into one model
- Use software like Revit or Navisworks to spot where parts overlap or clash before building starts.
- The teams check the results, and assign each conflict to the correct trade team to fix it.
- Teams update their models, and the test is re-run until there are no more clashes.
What Software is Used?
Different programs help teams plan, check, and fix problems in their 3D files. Below are some main ones:
Revit: Allows you to build detailed 3D models.
Navisworks: Let’s you find the clashes in the final model.
BIM Collaborate Pro: Lets teams share files and track problems.
Solibri: Used to check the model’s quality before building.
Using these tools makes it easy to run the whole process and ensures every trade uses the same, correct plan.
How BIM Coordination Helps
BIM coordination makes projects faster and prevents mistakes. Teams put all the models together early to fix issues before construction starts. Since everyone uses the same plan, the schedule stays clear and on track.
- Solve clashes on the computer, not on the job site.
- All trades coordinate using one shared source.
- Clear sequencing helps stop delays.
Also read: Best Practices for BIM in Data Center Construction
How Contractors Resolve Clashes?
When a clash is found, the next step is fixing it. Contractors hold meetings with the trade teams to look at the problems and agree on a fix. Each team updates its 3D model. The lead person then re-checks the model until everything lines up right.
Using a clear plan helps avoid confusion and wasted work:
- Review clash reports with all trades.
- Agree on which system adjusts (e.g., structure vs. electrical BIM services).
- Update and recheck the model.
- Approve the final coordinated version.
This method keeps your project organized and makes sure the final building can actually be built.
Tip: Always write down how you fixed each clash in a shared log. This holds teams accountable and stops the same problems from coming back later.
Coordination as a Prefabrication Enabler
Clash-free models are the foundation of successful prefabrication.
When coordination is complete, contractors can confidently move forward with:
- MEP rack prefabrication
- Electrical conduit rack assembly
- Panel room pre-layout
- Reduced on-site fabrication
Without structured coordination, prefabrication introduces risk instead of efficiency. A single unresolved clash can result in shop rework, delayed installation, and increased labor costs.
For contractors, coordination is what makes prefab predictable.
FAQs
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What is BIM coordination and clash detection?
It is joining all trade models and checking for design conflicts before building starts.
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What is the importance of clash detection?
Clash detection finds mistakes early, which saves time and money.
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What software tools can be used for it?
Navisworks, BIM Collaborate Pro, Revit, and Solibri, etc..
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How does BIM coordination make projects faster?
It keeps all trade teams aligned and stops wasted work.
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What are the common types of clashes?
Hard, soft, and workflow clashes.
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Does clash detection stop costly rework?
Yes, it prevents rework by fixing all problems before construction begins.
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What is the difference between them?
Coordination is joining the models; clash detection is finding the overlap problems.
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How does Eracore fix clashes?
Eracore finds, checks, and fixes clashes to provide models ready for building.
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How does BIM coordination help teamwork?
It makes teamwork better because everyone uses the same model.
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Who Benefits Most?
Projects for hospitals, factories, and data centers.
Conclusion
For contractors, BIM coordination is not about modeling. It is about protecting schedule integrity, reducing rework exposure, and improving installation predictability.
Projects that treat coordination as a structured process, not a last-minute review, experience smoother inspections, cleaner prefab transitions, and fewer costly field corrections.
Let’s talk about your next project
Explore our BIM Coordination Services or request a proposal to see how Eracore can support your team from planning to delivery.
