A Walk-through of Point Cloud to BIM Modeling Services
Scan to BIM is the process of 3D laser scanning a physical space to create an accurate digital representation of existing site conditions. The scanned data can be used for designing, analyzing, or evaluating purposes.
The AEC professionals are assigned tasks of retrofitting, renovation, conservation, or reconstruction of a building. The Point Cloud to BIM modeling services involve a series of steps followed to craft an actual representation of the site.
A 3D laser scanning device captures the existing site in the form of the scanned data known as ‘points’. The amalgamation of millions of points together formulates a Point Cloud Scan. A point cloud scan is then imported into a 3D BIM modeling platform to develop an as-built model of the site.
The Scan to BIM services serve various purposes like site verification, design validation, comparative analysis, developing as-built drawings, MEP or construction elements demolition or addition, interference checks, quantity take-off, budget estimation, and documentation of existing buildings. The documentation process is inclusive of the following levels
- Floor Plans
- Exterior Elevation & Roof Plans
- Sections
- Site Plan Layout
A walkthrough of the process of Point Cloud to BIM Modeling Services
The step-by-step process involved in the Execution of a Scan to BIM project has four different stages that are executed as per the BIM execution plan and as per project workflow.
Capture
The company can gather as much information as possible from the field and the client about the project. The scope of work, the level of detail timeline, and the deadline of the project can be determined.
The descriptive scope of work defines the inclusion and exclusion of all trades. The documentation of information takes place in two phases:
Pre-mobilization considerations
This phase takes into consideration all information regarding the scanner selection and elucidates the site work plan before the site work starts.
The laser scanners used in the process have specific advantages and drawbacks. Hence, it is crucial to do the cost and comparative analysis of all scanners to choose the one that is deemed to fit with project requirements.
Read more : Everything You Need to Know About Scan to BIM
On-site information
The scope of work is defined after proper invigilation of the site before work commencement. A standard template worksheet can be created to document a thorough analysis of the site, ensuring the desired quality of the end product.
The skills of the employed team should align with the project requirements and existing site conditions.
The process involves placing the scanner on a tripod capturing the building with high speed and utmost precision. The device includes an eye-safe rotating laser at a high speed.
The laser is positioned at the tripod and as the beam hits any surface it records its positions as coordinates referred to as ‘Points’.
Process
The next step after documenting the as-built site conditions is to process the scan. This step includes validating the survey data regardless of its accuracy.
The inspections carried out check the interruptions in the fluidity of the data. Environmental vibration can be the cause of fluidity of data and it may not be captured by internal system checks.
Original Source : Point Cloud to BIM Modeling Services
