Digital prefabrication is becoming increasingly popular in the construction sector. It limits the amount of time required by workers on site to produce parts and brings important productivity gains. To be efficient, however, prefabrication requires a very precise measurement taking process and high quality shop drawings. Those two conditions can easily be met by the use of 3D scanning and Computer-Aided Design (CAD).
Creadditive recently used its technologies to help JPL Disaster Recovery, a company based in the National Capital Region specialized in emergency services and restoration following extensive damage due to disaster. The roof of an apartment building had been damaged due to fire and access was difficult and dangerous for somebody to take measurements by hand.
Measurement taking with Light Detection And Ranging (LIDAR) technologies used by Creadditive are quick and precise and increase the quality of dimensional surveys compared to the manual process, which often contains errors.
In this case, many scan stations were done on site from the various floors accessible, giving us a good overview of the roof structure, which was originally made custom directly on site. The point-cloud of the roof structure was then handed over the architects to build a 3D model of the custom-made roof truss.
The position and dimension of every custom-made truss were captured by the 3D scanning process at a speed and precision levels that could never be reached by hand.
The final 3D model was available in multiple formats (Revit, DWG, DXF, etc) and was then used for the production of show drawings to pre-manufacture the custom-made roof truss system exactly as they were made originally.