Clash Coordination

Clash Coordination

BIM clash coordination is the process of identifying and resolving conflicts or potential conflicts between different building components or systems during the design and construction phase of a project. This is done using BIM (Building Information Modeling) software, which allows designers and engineers to create digital models of a building and its components, and simulate how they will fit together and interact.

During clash coordination, different teams review their designs and identify any potential conflicts, such as overlapping pipes or cables, or structural components that interfere with each other. They then work together to find solutions and make changes to the designs to avoid these conflicts. This can be done through meetings and discussions, or by using the BIM software to simulate and test different solutions.

Clash coordination is an important part of the BIM process, as it helps to ensure that the building will be constructed efficiently and without any issues. It can save time and money by identifying and resolving conflicts before they occur on the construction site, and can help to improve the overall quality of the building.

Clash Categories

Hard Clash
The clash consists of two components sharing the same place based on semantic or geometry and rule-based algorithms on the BIM elements with existing information.
Soft Clash
The clash takes place for lack of required spatial or geometric tolerance to facilitate maintenance after construction.
Workflow Clash
Workflow clash takes place while there is a conflict between equipment, material delivery, contractor scheduling and general workflow timeline.
Geometry
Conflicts related to the physical dimensions and shape of building components, such as overlapping pipes or cables, or structural components that interfere with each other.
Systems
Conflicts related to the different systems within a building, such as electrical, plumbing, or HVAC. These conflicts can occur when different systems are not properly coordinated, or when they interfere with each other.
Scheduling
Conflicts related to the construction schedule, such as when different teams are working on the same area at the same time, or when the installation of a certain component is delayed.
Cost
Conflicts related to the budget of the project, such as when the cost of a certain component is higher than expected, or when the cost of a change is not accounted for in the budget.

Clash Coordination Advantages

Improved collaboration: BIM clash coordination helps different teams to work together more effectively.
Enhanced coordination: clash coordination allows teams to identify/resolve (potential) conflicts between building components before they occur.
Increased accuracy: clash coordination helps to improve the accuracy by testing different solutions and ensure that everything fits together properly.
Better decision-making: BIM clash coordination provides teams with data about the building, which can be used to make more informed and strategic decisions.
Easier sequencing and/or scheduling
Accurate estimates for the entire construction phase
Leading to fewer accidents
Faster construction and higher productivity
Fewer errors in all stages of a construction project

Types of BIM clash tests

  • Clash Test
    A clash test is a predefined set of elements that must be checked for collisions.
  • Clash Matrix
    Our best practice is to plan the clash test by creating a "Clash Matrix" to define combinations of disciplines and priorities based on the construction schedule and deliverable. A chronicle order of clash test is crucial in mitigating the iterations between model updates.
  • Clash Report
    Navis-works is the most common platform we use to generate clash reports. It's a detailed document in different formats such as PDF, XML, HTML, etc. which is shared with stakeholders to identify and analyze every individual clash.
  • Geometry clash test
    This type of test is used to identify conflicts related to the physical dimensions and shape of building components. It involves comparing the designs of different components, such as pipes or cables, to see if they overlap or interfere with each other.
  • Systems clash test:
    This type of test is used to identify conflicts related to the different systems within a building, such as electrical, plumbing, or HVAC. It involves comparing the designs of these systems to see if they are properly coordinated and do not interfere with each other.
  • Scheduling clash test:
    This type of test is used to identify conflicts related to the construction schedule. It involves comparing the schedules of different teams or components to see if they are working on the same area at the same time, or if there are any delays or conflicts that need to be resolved.
  • Cost clash test:
    This type of test is used to identify conflicts related to the budget of the project. It involves comparing the cost estimates of different components or changes to see if they are within the budget, and identifying any potential issues or discrepancies.
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