February 2014
Scope
• Seismic Retrofit of Building
• Replacement of three, 40 MW
Generating Units
• Replacement of all Mechanical and
Electrical Systems
• Rehabilitation of Tunnels
• Regrading Abutment Slope/Road
Relocation
• Intake Gates/Draft Tube Gate Addition
• Architectural Upgrades and Finishes
Challenges
• Old Facility with Poor Construction Documentation
• Confined and Cramped Powerhouse
• Operating Powerplant During Construction - Phased Construction
3D Visual Design Aids
• 3D Survey
– High Definition Survey (Laser Scan) of Powerhouse
– TruView – Overlay 3D Point Cloud on Panoramic photo - identify points/
measure distances.
• 3D Design
– REVIT – 3D Design and Building Information Modeling (BIM) for Powerhouse
M&E Design
– Navisworks - Clash Detection
– Civil 3D
– Autodesk 360 – Cloud Rendering
High Definition Survey (HDS) - Laser Scan
• Triad Associates (Kirkland, WA) – 4 Man Crew
• Full Survey - 5 Days
• 290 Setups - Inside and Outside
• Cost $130,000
• Deliverable- 3D Point Cloud with Leica TruView
• 3D Model Generation -$80,000
Benefits
• Precision Measurements (± 6 mm)
• Full 3D Point Cloud - All Areas
• Measurements at your FingertipsFewer Visits to Site
• Verification with As Builts - Overlay on
Theoretical Model to Identify
Discrepancies
Powerhouse Point Cloud Fly-Through
TruView –Measuring Tool
TRUSS IN
REVIT MODEL
POINTCLOUD
• Underwater laser scanner technology by Newton
Labs captures as-built measurements with submillimeter precision, as well as being able to
quantify cracks, rust, wear, fissures, corrosion,
weld deterioration, pitting and other deformities.
• Similar in use to air laser scanners, the Newton
Underwater Laser Scanner is tuned for the
aquatic environment and produces a dense point
cloud easily converted into a CAD model using
industry standard software.
A Model M210UW
Underwater
Laser Scanner
www.newtonlabs.com
AUTODESK REVIT (BIM) - 3D Design Tool
•
•
•
•
•
Features & Capabilities
I. vs.
Parametric
Modeling
Differences
Conventional
CAD software
Project
in aWorkflow
single in
model
I.
Minimal
inconsistencies
views(Views, Schedules, Sheets, …)
Benefits II.
overEntire
Conventional
III.
and Collaboration
II. Worksharing
Fully annotatable,
understand real world units
Use of Features
to
Aid
in
Project
I.III. Consistent,
well-coordinated
Design
Intelligent objects
vs. plain line
work
Objectdetection
oriented, no layer management from user side
Clash
Cost vs.I.II.
Traditional
III.
II.
I.IV.
III.
II.
V.
IV.
III.
Typical Nuisance CADD Issues are handled automatically
Visualization
Job
estimated
as conventional
design
Easy
visualization,
what you see
what you get
Phased
Construction
3D
Design
plus
training
of
4
staff
members
- met budget
Project &
data
into the
model query
Extract
sortembedded
data in a form
of database
(such as QTO,
Future benefits – model available for Contractor use / Plant
schedules, sheet index, …)
management
ELECTRICAL POWER SYSTEM