Understanding BIM Clash Detection With Types & Benefits

Understanding BIM Clash Detection With Types & Benefits

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    Introduction

    In the construction world, where every little detail matters, things can get tricky fast- that is why it is must to understand what clash detection in BIM means.  

    BIM clash detection identifies conflicts between different construction disciplines ( MEP/FP) before they become costly issues on-site. 

    When discussing BIM clash detection, we can’t ignore the role of coordinated BIM models. 

    Coordinated BIM models help everyone on the project team (Architects, Engineers, and Builders) work together smoothly on MEPFP disciplines.  

    Using special software like Revit and Navisworks, coordinated BIM models can check for things that might cause trouble later, saving time and money.

    Studies revealed that projects utilizing BIM clash detection experienced up to 30%  in construction time and 20% in costs!

    Clash detection directly affects you whether you’re an architect, engineer, or contractor. 

    Let us discover how this technology leads to smoother project execution and improved outcomes.

    What is Clash Detection in BIM?

    Clash detection is a method used in BIM (Building Information Modeling) that accelerates projects by detecting conflicts(clashes) between various models (disciplines) during the design process.

    Clash detection looks for places where different building parts, such as walls, pipes, or wires, may get in each other’s way during construction.

    Architects, MEP engineers, and structural engineers create independent models at the time of the design process.

    Next, when these separate models are combined into a single project model, there is a high risk that the individual components will mistakenly overlap or interfere with each other.

    BIM clash detection services will highlight these clashes at a very early stage in the preconstruction or design process, helping prevent costly adjustments and delays.

    Different Types of Clashes

    Let’s understand the different types of clashes in BIM that you will surely find interesting, especially if you’re learning about how big projects like building a school or a mall are planned!

    1) Hard Clashes

    Hard clashes occur when two elements occupy the same space in the design, making it physically difficult for them to coexist in the real world.

    This consists of structural components, such as beams intersecting with HVAC ducts or plumbing running through a solid wall.

    Further, BIM software will find out these hard clashes during the virtual modeling stage, informing MEP designers to sort out the issues before construction begins.

    2) Soft Clashes

    Soft clashes happen when elements do not have much clearance space around them for maintenance, installation, or operation.

    For example, an electrical conduit may be too close to a mechanical duct, restricting access to maintenance work or disturbing building codes that require certain distances between different systems.

    BIM coordination services effectively use clash detection methods to ensure all elements have operational clearance, optimizing each space’s functionality.

    3) 4D/ Workflow Clashes

    Also called 4D clashes, workflow clashes mean scheduling conflicts when two different construction activities are planned at the same time and in the same space.

    There have been cases where these clashes were often overlooked and have caused significant disruptions to the construction timeline.

    BIM helps project managers visualize and analyze the entire construction process in a sequenced, step-by-step animation.

    This easiness of BIM will allow for the adjustment of timelines and resources to minimize overlap and ensure a smooth workflow.

    Why do clashes happen?

    “Clashes” in construction projects generally happen primarily due to the following reasons :

    Complex integration of multiple disciplines

    Repeated changes during design phase

    Human errors

    Communication gaps

    Limitations of traditional 2D planning methods

    Using Architectural BIM Services, particularly with 4D clash detection, helps identify and resolve these issues early in the design process, preventing costly mistakes and delays.

    In this study, the causes of the clashes with the highest percentage were caused by a design error, which is around 52.36%, this type of clash was mainly found in the clash between structural and MEP components.

    Understanding clash detection with an example

    In a new high-rise office project, the architectural team designs an elevation with large, uninterrupted glass panels to maximize natural light.

    The structural team plans steel beams for support every few meters. Concurrently, the mechanical team designs large HVAC ducts.

    As the design progresses, it becomes evident that the large ducts planned by the mechanical engineers clash with the steel beams of the structural engineers and the clean lines of the glass panels favored by the architects.

    Now, what happens here is that the ducts need space, which would either require modifying the beam placement or changing the architectural glass panel design.

    Such clashes happen because each discipline has optimized its design without fully integrating with the others.

    This example is an indication of why BIM is essential. It allows for 3D visualization and coordination between different engineering and architectural teams to resolve clashes before construction begins!

    What is the most efficient way to perform clash detection?

    Consider the following strategies to perform clash detection;

    Utilize BIM software with excellent clash detection capabilities such as – Autodesk Navisworks and BIM 360.

    Make it a rule that all project teams use consistent modeling standards and conventions to facilitate precise clash detection.

    Execute a process for regular updates to the BIM model to reflect design changes and construction progress.

    Establish effective communication channels between design, construction, and other stakeholders to address clashes promptly.

    Set up an automated clash detection engine within your BIM software to identify potential conflicts efficiently.

    Schedule regular coordination meetings between design, construction, and other stakeholders to discuss identified clashes and develop solutions.

    Benefits of BIM Clash Detection for AEC Professionals

    Here are the benefits that make BIM clash detection and coordination a preferred choice of modern AEC professionals.

    1) Early Identification of Clashes

    BIM Clash detection allows for the early identification of conflicts and clashes in the project design phase.

    2)  Excellent Preciseness During construction and Onsite Installation

    Pre-fab drawings extracted after 3D clash resolution ensure brilliant geometric accuracy and smooth onsite installation.

    3) Cost & Time Savings

    Streamlining processes to reduce the expenses and project duration ultimately.

    4) Higher Onsite Safety

    It helps identify safety-related clashes, such as conflicts between structural elements and egress routes. Addressing these issues enhances overall project safety.

    5) Accurate Cost Estimation and Bill of Materials (BOM)

    It helps in estimating construction costs by identifying potential issues that may ask for additional materials, labor, or design modifications.

    Conclusion

    With the growing technology and increasing complexities in the AEC sector, the demand for BIM clash detection is destined to rise, and pre-construction clash resolution will soon become mandatory and not a matter of choice.

    Expecting BIM clash detection in your project management strategy? 

    Contact us today to learn how the Experts at Edifice Expert use BIM Clash Detection and BIM Coordination Services to help you accelerate and improve the speed and accuracy of your project.

    Looking for MEP / BIM Services?

    Transform your projects with Edifice Expert's innovative MEP & BIM Services - Let's reach new heights of excellence together!

      About the Author
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      Edifice Expert

      Edifice Expert Company excels in MEP design and BIM services, delivering cutting-edge solutions for the construction industry. Our team of skilled engineers, architects, and BIM specialists provide innovative and efficient designs for optimal performance and sustainability in building projects. With a commitment to excellence and the latest technology, Edifice Expert helps designers, surveyors, and contractors stay competitive and achieve outstanding results in the AEC industry.

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