texas surveys april 2010
TRANSCRIPT
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High Definition Digital Survey
(Laser Scanning)
April 2010
Simon Atkinson281.701.2292
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7 Affiliate Locations Worldwide
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2009 Projects
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Simon Atkinson 1994 - 2010 As-Built Data Collection / Laser Scanning Experience
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Shell
&
H&K Engineering
Dauphin Island
Alabama
April 2009
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How It All Works
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The Process
Survey The Registration Targets With A Reflectorless Total Station
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The Process
Survey The Registration Targets With A Reflectorless Total Station
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How Laser Scanning Works
Scan Area With High Definition Laser Scanner
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How Laser Scanning Works
Generate Scan File: This Is Scan Data & Not A Photograph.
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How Laser Scanning Works
Generate 3D Model (If Required)
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Delivering Value To Our Clients
&
The Project Engineering Team
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Laser Scanning
Hale Boggs Memorial Bridge
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Zone-1 Close Range Scanning
Internal Structure & Saddles
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High Definition Laser Scanning
Z+F Imager 5006
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Examples Of Internal Scans Of Zone-1
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Registered Scan Data
In a non-orthogonal environment such as the
Hale Boggs Memorial Bridge, the registered scan
data quickly give a true 3D representation of the
real world environment.
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Requested Deliverable
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Proposed Deliverable
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Deliverable: Unigraphics As-Built 3D Model
Client: Feedback
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Existing Design Model Overlaid onto As-built Model
Client: Feedback
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• Site Definition• Unit Record Sheets (URS)• Site visits (tape measure, photos,
sketches)
• Design Effort • Background (TURB)
file creation
• Issues • Drafting hours for
TURB file creation• Documentation accuracy
– No documentation– Incorrect documentation– Undocumented site
modifications• Site fit-up issues
– Piping, conduit, skids
• Site Definition• Only one site visit• Point cloud data, all measurements
collected
• Design Effort• Background UG model generated
• Benefits• Time Reduction
» Engineering and drafting cycle time (productivity)
• Accuracy – As-Installed configuration
• Cost Avoidance» Reduced outage time» Eliminate Site fit-up & re-work
issues
Current Process with
Laser ScanningOld Methodology
Client: Feedback
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The Gray is the Laser Scan Parasolid
The Green is the GE Design Model
Working Closely with Designers is important.
• A small adjustment in position, brought the whole model into perfect alignment.
• The 0.36 inch difference was calculated to be heat expansion / deformation.
Diameter 122.64 inch (3D Parasolid Model)
Diameter 123.00 inch is design dim.
Don’t Panic
How Problems Are Perceived & Getting It Right
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DeliverablesAs-Built Models
Points imported directly into laser scanning design software to create As-Built models
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DeliverablesAs-Built Models
Points imported directly into laser scanning design software to create As-Built models
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DeliverablesAs-Built Models
Points imported directly into laser scanning design software to create As-Built models
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Design / Fabrication Comparison & Validation
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Yellow – As Designed
Pink – As Built
Design / Fabrication Comparison & Validation
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Validate Dimensions
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As-Built Modeling
From the Point Cloud Data, 3D
As-Built Models can be created,
and converted to PDS,
SmartPlant Review, AutoCAD,
PDMS, …etc
3D Laser Scan Model
PDMS Model
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Direct Import Of Point Cloud Data
Points imported directly into
the design software:
SmartPlant Review, PDMS,
PDS, Microstation,
AutoCAD, NX …etc.
Identifying:
• Tie-In Locations
• Routing Options
• Clash Detection
• Equipment
Identification
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Clash Detection / Design Validation
Review New Design Against The
Real World Environment.
Interference / Clash Detection
Tracking And Reporting.
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Plot Plan View Of Scan Locations
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Accurately Dimension Directly From The 3D Scan Data.
Distances, Center Lines, Diameters, Elevations, …Etc
Navigate Through The Plant Without Leaving The Office
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Safely And Quickly Capture Data In Dangerous Environments.
Navigate Safely Through Dangerous Areas
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ADDED
VALUE
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Increased Safety For All
Faster / More Accurate Data Collection
Better Design & Planning
Reduced Construction Man Hours
Added Value – Project Engineering
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Added Value – Project Engineering
Detect Errors Prior To Construction
Reduce Shutdown Time Due To Fit-up Issues
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No Dangerous / Costly Scaffolding Required
Added Value – Project Engineering
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Traditional Methods Of Data Collection Are ExpensiveIncomplete And Inaccurate
Added Value – Project Engineering
$
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Cost Effective Option: Reduced Site Visits For All
Added Value – Project Engineering
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Bristol UK – Rhodia HF Unit - Mexichem
Field Work:
3 Person Survey Crew
5 Days on Site Scanning
Data Processing:
1 Office Person
3 Days Conversion / Registration
Case Study #1
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Data Collection: Labor + Expenses (UK) $ 28,000.00
1 Week Equipment Rental $ 7,000.00
As-Built 3D Model Production $ 46,000.00
Total $ 81,000.00
As-Built / Back Modeling
3 Designers
6 Weeks
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Open Discussion
Contact:
Simon Atkinson281.701.2292
www.Texas-Surveys.com