[Important] What Kukan Honyakusha 'Does Not Do'—The Reason We Do Not Deliver BIM Modeling
Kukan Honyakusha aims to bridge the gap in spatial perception between the site and design by utilizing point cloud data and BIM data.
Therefore, we have clearly defined our scope of work.
Kukan Honyakusha does not deliver BIM modeling itself as a deliverable.
The reason is that a BIM model is not merely 3D shape data.
A BIM model contains component information, attribute information, quantity information, and more, which are data that influence subsequent processes such as design, construction, and cost estimation.
If, based on a model created externally, a situation occurs where:
"The quantities were wrong"
"The material information was wrong"
"It affected the estimated cost"
the impact does not end with simple data correction.
It has the potential to develop into problems involving actual operations, such as costs, schedules, and procurement decisions.
Therefore, the scope in which a BIM model is used as design or estimation information should be managed by those in a position of responsibility.
Kukan Honyakusha does not take on that domain.
We do not modify supplied BIM data
At Kukan Honyakusha, we do not reflect design changes or modify attribute information for the BIM data we receive.
This is not because we cannot handle BIM.
It is because a BIM model is the design information itself, and the designer is in the position to judge which changes constitute the official design content.
For example, even if we receive data stating,
"This is BIM where design changes have not yet been reflected,"
Kukan Honyakusha will not modify that content.
We use the supplied BIM data as is to perform integration with point cloud data, comparison with current conditions, and organization of verification results.
Reflecting design changes and updating BIM models are areas that should be managed by the designer with responsibility.
Kukan Honyakusha respects that scope of responsibility while taking charge of organizing and visualizing spatial information.
Kukan Honyakusha's Standard Services
Kukan Honyakusha's standard service is to receive existing BIM data or design data and integrate it with point cloud data.
Specifically, we perform:
・Integration of BIM data and point cloud data
・Comparison with current conditions
・Verification of interference points and insufficient clearance
・Organization of important points
・Reporting of verification results
The goal is not to complete the BIM model.
It is to compare the site conditions and planning information in the same space to create a state where judgments can be made.
Handling cases where BIM data does not exist
Depending on the site, there are cases where only 2D drawings exist and only point cloud data is prepared.
In such cases, we perform partial modeling only for the necessary scope according to the purpose.
For example, we model in Revit by limiting the scope to be verified, such as:
・Interference verification with existing equipment
・Placement verification of new equipment
・Verification of necessary clearance
The Revit data in this case is intermediate data for performing spatial verification.
It is not intended for BIM model delivery, but is a means to make the verification work possible.
Therefore, the deliverables are viewing data that integrates the point cloud and the verification model, as well as a report summarizing the verification results.
The created Revit data itself is not delivered.
What you can do with Navisworks integrated data
With Navisworks data that integrates point cloud data and a verification model, you can perform not only simple 3D space viewing but also basic verification necessary for site confirmation.
For example:
・Distance verification of arbitrary points
・Clearance verification between objects
・Verification of positional relationships
・Verification of overlap between current conditions and planning data
This makes it possible to grasp the points that need to be checked in the space before going to the site and to have a common understanding among stakeholders.
However, these do not substitute for design changes or construction decisions.
What Kukan Honyakusha provides is organizing the spatial information necessary for judgment and making it easy to check.
Providing a verification environment through important point view registration
At Kukan Honyakusha, for positions designated as important points, we register views in Navisworks when creating reports.
In the delivered Navisworks data, by calling up the registered views, it is possible to check the target points from the same perspective as the content posted in the report.
This allows you to check spatial positional relationships that are difficult to convey with just photos and explanations in a report within an actual 3D environment.
Also, starting from the registered view, you can perform additional checks yourself, such as:
・Moving the viewpoint
・Checking surrounding conditions
・Measuring distances between objects
・Checking clearance
What Kukan Honyakusha provides is not just the verification results.
It is the environment itself where you can immediately access the places that need to be checked and where stakeholders can share the same spatial information.
The value Kukan Honyakusha provides
What Kukan Honyakusha provides is not "turning drawings into BIM."
Nor is it "making everything into a 3D model."
It is bridging the perception gap between point cloud data, which is the real space, and BIM data or drawings, which are design information.
We identify the necessary scope and visualize only the necessary information.
By doing so, we support site verification and decision-making.
If the scope of work presented as "we can do this" does not match the scope of work assumed by the requesting party, a perception gap will occur in later processes.
At Kukan Honyakusha, by clarifying the scope of work and scope of responsibility in advance, we provide a service that designers, contractors, and clients can use with peace of mind.
Kukan Honyakusha's AI usage policy
Kukan Honyakusha utilizes AI as a tool to increase work efficiency.
We do not delegate spatial recognition or judgment to AI.
However, in processes that require spatial recognition or judgment, human verification is the standard.
Processes that do not use AI
* Confirmation and organization of point cloud data
* Data integration
* Confirmation of coordinates and alignment
* View registration and viewpoint setting
* Final confirmation of delivered data
These are not left to AI because spatial recognition and site understanding determine quality.
Processes that utilize AI
* Drafting and organizing report text
* Image generation and assistance for simple perspectives
* Assistance in creating explanatory materials
* Proofreading and summarizing text
These are used for the purpose of streamlining expression, butfinal confirmation is performed by a human.
AI is a tool to increase work efficiency.At Kukan Honyakusha, humans bear the responsibility for spatial recognition and judgment.
If you have had similar experiences or have different perspectives in the field, I would be happy if you could share them in the comments.
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……I realized this as I was writing up to this point.
I had intended to organize 'what we do not do,' but it ended up becoming a discussion about our corporate philosophy—what Kukan Honyakusha values in our work.