According to the article “About Working with Point Clouds” published at Autodesk Knowledge Network site in 2015, “A point cloud is a large collection of points acquired by 3D laser scanners or other technologies to create 3D representations of existing structures” (ADN, 2015).
Point cloud files support the design process by providing real-world context where you can recreate the referenced objects or insert additional models. Once a point cloud is attached to a drawing, you can use it as a guideline for drawing, change its display, or apply a color stylization to distinguish different features (ADN, 2015).
What Do We Do As Prota Engineering:
We superpose our coordinated model and floor plans with point cloud to inspect the point cloud file (generated by laser scanners at the site) in Autodesk Navisworks. Every inspected file needs to be absolute data to handle the process accurately.
We start inspecting the compatibility of our model with the construction site after collecting every necessary file on Autodesk Navisworks. During these inspections, we particularly pay attention to the compatibility of the following items with the design;
- Technical and mechanical installation shafts
- Escalator pit, elevator pit, openings in shear walls
By using Autodesk Navisworks, our team detects differences between design and construction, generate viewpoints and deliver comments to related disciplines for information purposes.
Main Benefits of Point Cloud Technology:
- Compatibility check of the constructed items with models and design.
- Ability to inspect the impact of revisions on constructed items to the structure.
- Ability to inspect relations of the constructed item with the surrounding objects (trees, electric pylons) through 3D laser scanners.
- Ability to inspect constructed items through tablets and computers and less construction site visits.