Detail-rich BIM model converted from point cloud scans drives efficient renovation of underground railway tunnel in UK

Point Cloud to BIM Model Samples.

Access Escalator of Underground Tunnel

Bird Eye / Skeletal View of Underground Tunnel

Challenges.

The team at Hitech conducted an assessment report on scope of work and documented challenges which included:  

• Retaining the existing features of the tunnel while modeling the geometrically complex structure 
• Delivering the as-built model with +/-10 mm accuracy within a very short time frame. 

Solution.

The team at Hitech delivered a content-rich 3D Point Cloud to BIM model of the underground railway tunnel, with details of tunnel, escalators, piping, access points and structure components.

They also created specific families for structural elements, architectural elements and MEP systems as required. 

Approach.

The BIM team analysed the scans and images provided as inputs by the client to be converted into 3D BIM models

• The  scans were converted into a 3D Revit BIM model for architectural, structural and MEP systems of the underground tunnel. 
• The models was duly populated with associated equipment and services. 
• The team also prepared accurate detailing of the tunnel, escalators, piping, access points and structure components as per client requirements. 
• Specific Revit families for structural and architectural elements along with MEP part models were classified category wise as per standards provided by the client.