Civil BIM and the Future Transformation of the Digital City
Transcript of Civil BIM and the Future Transformation of the Digital City
Civil BIM and the Future
Transformation of the Digital City
October 2020
Presenter:
Makram Jaibaji
Regional Director
What is “Vertical and Horizontal BIM”
BIM-Digital Engineering depends on who you are talking to
And almost all the BIM discussions in recent past have been on buildings and structures.
So what about the CIVIL BIM
Is the Vertical BIM Important for the city
!!!
• How Detailed is the Design of the Building ,LOD?
• How much time the designers will need to redesign the
building?
• What is the Building Life Cycle or the operational cost?
• Other questions……
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BIM and IFC’s
Industry Foundation Classes
For ifc 2x3 definition, the Elements - currently
mainly for vertical buildings• Ifc Element definitions
• Ifc Column
• Ifc Door
• Ifc Slab
Criticise Vertical BIM
• BIM has been mainly
developed for Vertical projects
such as building.
• Vertical BIM doesn’t support
vectors.
• Vertical BIM doesn’t have
coordinate Manipulator.
• Vertical BIM doesn’t fit for
large longitudinal
infrastructure projects
• BIM name
BUT Can BIM be Civil ?
Civil BIM
• World Coordinate System
Earth NOT a sphere BUT an Ellipsoid – a sphere that is
squashed in a bit at the top and the bottom
Long and Lat to Map project of Easting and Northing (x,y)
(Geodetic Coordinates)
Orthometric heights and ellipsoid heights.
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Civil BIM
• Plate Tectonics and Continental Drift – Australia is drifting 7cm per year to the Northeast towards the
equator so everything is moved 1.8 m since 1994
– Our continents is moving everyday at about the rate that a nail grows.
– Imaging that mixing the GDA94 and GDA20 so your house was out by 1.8 m when placing it near the boundary
– Satellite Images and Google Earth
– Dynamic Datum :the satellite change
their datum every year
• Epoch
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Civil BIM
• Underground Utilities Data
• Infrastructure info and Coordinates
• Assets
• Facility Management
• Simulations and scenarios
• Land Ownership and usage
• Central Data Source GIS
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A Civil BIM System Needs• Large coordinates – e.g. Eastings and Northings
• Handle large and long horizontal projects
• A Helix for arcs
• Strings without diameters and attributes on strings, vertices and
segments
• Name/Code for strings – used in Australia at least since 1980
• Null z values in strings
• Drainage/Sewer pits and pipes
• Tins for surfaces (hundreds of millions of points) and trimeshes for
3D objects
• Alignments – independent horizontal and vertical geometry;
vertical defined in terms of 2D distance (chainage) of HG
• Linear referencing using Alignments
• Transitions – spirals, cubic parabolas etc (varying radius helix)
• Published formats available free of charge to everyone.
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1 • Geophysics Survey
2 • Geomatic Survey
3 • Aerial Survey
4 •Marine Survey
Civil BIM
Depth of 10 meters
Any type of services (HV cables, LV cables ,Fiber
Optics, Drainage & Sewer Pipes, Water
conduits, Gas Pipes, Live & Dead Cables...etc.)
All utilities GIS attributes as depth, type
,material and status
Outputs: BIM, DWG, DGN, KML and SHP
formats
Accuracy ± 3 mm horizontally and ± 30
Vertically
Underground Mapping
Utilities Mapping
Actual Data Ground Marking 2d Drawings
3d BIM Model12d Attributes Manipulator
Underground Mapping
Utility Coordination
Underground Mapping
Wide range of UT mapping techniques are in GCS for various soil conditions or utilities types:
• Direct Method
• Electrical Method
• Electromagnetic Methods
• Ground Penetrating Radar
• Potential-Based Method
• Pipe Tagging Methods
• Multisensory Technology
Civil BIM Functionality
• Traffic Signals
• Utility Pits.
• Clash Detection
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BIM Data
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Underground Mapping Live GIS
Underground 12d to Google Earth
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Underground Assessment
Laser Scanning to BIM
12d Data of Underground and Laser Scanner 2019
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Laser Scanning
Making BIM Smarter
Points Cloud
Mobile Mapping
Mobile Mapping
Asphalt Assessment – Laser Crack
System
Civil BIM Functionality
Pavement Manager
Mixed Reality Hologram
To overcome Corona Virus crisis without affecting project
performance GCS/Alhoty team will introduce Mix reality
MR technology to provide direct hologram supervision to
site staff during surveying and then will be used for
present data to the client.
https://www.youtube.com/watch?v=d3YT8j0yYl0
Hologram
Hologram
Aerial Survey
Aerial Survey
Aerial Survey - TIN
Hydraulic Studies – Flood Assessment
250 million points in 12d
Services will be provided:
1. Underground Mapping
2. Update GIS Database of Aramco
3. NOC to contractors
4. Implement 12d Technology in ARAMCO
5. Provide Training to ARAMCO Staff
6. R&D
Hydrographic SurveyBathymetric Survey in 12d
Oceaneering AUV-Based
Pipeline Survey
Oceaneering AUV-Based
Future – More Civil Objects in IFC’s
To address Civil BIM, buildingSMART (the International Group looking after
IFCs) has working groups looking at how non-Building data should be
transferred using IFCs
There are currently Working Groups on:
12d Solutions is working with these bSI Working Groups.
• Alignment
• GIS
• Roads
• Rail
• Bridges
• Tunnels
IFC
KPI’s for measuring BIM/IFC success
• Reduction in RFI’s relating to setout errors
• Clashes identified prior to construction
• Better understanding of the design intent by the construction team
• Design model will be adopted by the survey team, resulting in a
reduction in survey modelling effort for construction setout
• Workflows and process developed on M1/M3 will be adopted as
business as usual for other traditional delivery projects.
Surveying
Construction
Roads and Highways
Land Development
Oil and Gas
Ports and Dredging
Mining Infrastructure
Rail
Airport Infrastructure
Drainage, Sewer, and Utilities
Environmental
Rivers, Dams, and Hydrology
Project Types:
12d Model is a Civil BIM System.