3D Clash Detection
-
Upload
safe-software -
Category
Technology
-
view
552 -
download
1
description
Transcript of 3D Clash Detection
CONNECT. TRANSFORM. AUTOMATE.
3d Clash Detection Josh Symonds Senior Technician
Agenda
! Project ! Brief ! Input File formats ! Custom Formats
! 12da ! 4d
! Workspaces / Stages ! Outputs ! Conclusions / Lessons Learned
! A global, integrated, multidisciplinary firm of professionals working together to tackle complex planning, infrastructure and building design challenges
! 11,000 engineers, designers, planners, management consultants and economists
! 90 offices in 37 countries
! Full service from concept through completion
! Dedicated to delivering value through expertise, global resources and local delivery
Brief
! Tasked with scoping design ! Joint design team:
! Arup ! Hassell ! Aurecon
! Utilities clash detection was manually by a handful of Arup Engineers
! Constant alignment tweaking
Image Source: Arup
Brief ! Automation of the current process ! Apply assumptions ! Classification to AS5488 (Australian standard for subterranean utilities)
! Utility clash reporting to stakeholders
Image Source: Sydney Morning Herald Image Source: Arup
Brief
! Capture assets retrofitted within existing assets
! Utilise Dial Before You Dig (DBYD) ! Improve existing data
Image Source: Arup
Image Source: Arup
Image Source: Arup
Input File formats
! Numerous input file formats ! CAD
! AutoCAD DWG ! Microstation (DGN)
! GIS ! Esri (SHP) ! Mapinfo (TAB)
! Survey / Design ! 12d Solutions (12da) ! 12d Solutions (4d) ! Microsoft (XLS)
Custom Formats – 12da
! Civil engineering and surveying format
! ASCII based file format
! 15 “String Types” ! Structured hierarchy
! Model ! String
! Geometry ! Attributes
Custom Formats – 4d
! ASCII based file format ! Contains specifications for
Drainage Structures ! Combined with Drainage network
XLS creates full 3d model
Image Source: Rocla.com.au
Workspaces – Initial Run
! All processing as a single workbench
! Solids generation of all survey assets & output in 1000 element files
! Clipping 147,000 utilities against 17,000 design elements
! Run manually on 3 workstations
Workspaces – Tweaked Run
! Broken down into 4 key stages ! Revised solids generation
method ! Utilized the transformers:
! WorkspaceRunner, ! GeometryValidator, ! CollinearSliversRemover
! FME Feature Store (FFS) for interim storage
! Used Batch Deploy
Stages
Tweaked Run – Stage 1
! AS5488 Classifications ! Added assumptions
! Pipe / Conduit Sizing ! Depths
! Survey, Local government GIS data and standardised
! Turn 2d elements into 3d
Tweaked Run – Stage 2
! Survey assets clipped against design elements in “2.5d clip”
! Centre point of Manholes & Pits “clipped” against 2d design elements
! Reduction in Survey elements by ~60%, by filtering unrelated elements
Tweaked Run – Stage 2
Tweaked Run – Stage 2
Tweaked Run – Stage 2
Tweaked Run – Stage 3 & 4
! Survey accurate solids with “buffer” ! Utilized the Transformers
! Chopper ! GeometryValidator ! 3dBufferer (With tweaks) ! Clipper
! Output Both Clipper Passed, Failed elements for verification
Outputs – Solids Model
Outputs – Web interface
! FME reduced manual workload significantly allowing for engineers to focus on other elements of design
! Asset owners requested enhanced data to improve their internal systems
! Custom formats utilised on various Arup projects
Conclusions
Image Source: Arup
Lessons Learned ! Clipping 72,000 utility solids
against 700 design solids (takes a while and is probably not recommended)
! Reducing the amount of vertices greatly helped speed when generating solids
! You can still lose stuff in organised workbenches
! Clipping rectangular prisms instead of cylinders to reduce process time Image Source: http://www.practicalpmo.com/
Thank You!
! For Questions and more information: ! Josh Symonds E: [email protected]
! Ben Cooper-Woolley E: [email protected]
CONNECT. TRANSFORM. AUTOMATE.