civil bim and the future transformation of the digital city
TRANSCRIPT
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Civil BIM and the Future
Transformation of the Digital City
October 2020
Presenter:
Makram Jaibaji
Regional Director
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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
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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
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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
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BUT Can BIM be Civil ?
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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
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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
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Actual Data Ground Marking 2d Drawings
3d BIM Model12d Attributes Manipulator
Underground Mapping
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Utility Coordination
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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
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Civil BIM Functionality
• Traffic Signals
• Utility Pits.
• Clash Detection
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BIM Data
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Underground Mapping Live GIS
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Underground 12d to Google Earth
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Underground Assessment
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Laser Scanning to BIM
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12d Data of Underground and Laser Scanner 2019
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Laser Scanning
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Making BIM Smarter
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Points Cloud
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Mobile Mapping
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Mobile Mapping
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Asphalt Assessment – Laser Crack
System
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Civil BIM Functionality
Pavement Manager
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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
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Hologram
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Hologram
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Aerial Survey
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Aerial Survey
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Aerial Survey - TIN
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Hydraulic Studies – Flood Assessment
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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
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Hydrographic SurveyBathymetric Survey in 12d
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Oceaneering AUV-Based
Pipeline Survey
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Oceaneering AUV-Based
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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
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IFC
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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.
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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.