Scan to BIM functions with the help of a 3D Laser Scanner to collect data of external  and internal surface/elements of a particular building with high speed and precision. This 3D scanned data documents every single detail. This also helps to eliminate the need for repeated site visits. Scan to BIM is used now a days to create As Built models for retrofit, refurbishment and renovation projects. The As Built model helps MEP managers to detect early clash.