BIM - Murdoch, Walrath & Holmes [www.m-w

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Transcript BIM - Murdoch, Walrath & Holmes [www.m-w

BIM Me Up,
Scottie!
The Next
Generation in
Construction
Technology
Teri Jones, LEED AP
Vice President
Sundt Construction
Agenda
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What is BIM?
Current Practices
Benefits & Advantages
Challenges
The BIM Path
Case Studies
Summary
What Is BIM?
Definition
• BIM is the move from analog to digital
design and construction. A model-based
technology linked with a database of project
information - AIA
• Construction is
the only industry
that does
not/cannot test
a design before
production
2D vs. 3D
2D
• Traditional drawings
3D
• BIM
3D - Installed
• Actual
4D Example
• The Sundt Corporate Office
4th Dimension - Time
• Each element in model tied to CPM
Schedule
• Construction sequence can be simulated
showing conflicts between trades
• Play “What if ?” game with model to find
more efficient construction path - saving
time and money
• Once construction begins model used to
track construction progress
5D
• Each component of the BIM tied to the
Cost Estimate
Wall Schedule
Level
Level 1
Level 1
Level 1
Level 1
Level 1
Level 1
Previous Model
Current Model
Type
Square Feet Volume (CY) Square Feet Volume (CY) Squ
Basic Wall: Generic - 4"
11244
208
3308
62
4" Framed Wall
2078
38
6" 1 Hour Fire Rated Wall
4016
74
10" Concrete Core Walls
1842
36
Basic Wall: Generic - 8" Masonry
7955
187
7955
187
Curtain Wall: Storefront
6900
7122
Current Practices
Collaborated Model
Arch Model
(Revit)
Civil Model
(Bentley)
Elect Model
(Graphisoft)
Struct Model
(Revit)
Collaborated Model
(Navisworks)
Mech Model
(CadDuct)
Fire Model
(CadPipe)
Plumb Model
(ABS)
Model Changes
• The ability to change the model is
strictly limited to those who are
responsible for changes to that portion
of the model
• A precise audit trail can be maintained
Benefits
and
Advantages
Benefits & Advantages
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Clash Detection
Faster Construction Time
Streamline Delivery/Fabrication
Better Performing Facilities
Fewer Claims
Real Time Value Engineering
User Understanding – 3D Visualization
Challenges
Challenges
• Lack of standards for organization and
format of data contained within the model
• Contracts/Delivery Methods
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Defining responsibility
Allocation of Risk
Ownership of data
Insurance/Surety/Bonding
Interoperability
Fear of change
Initial investment costs
Learning curve
Challenges – For Designers
• Change in culture & work flow
– Work is divided up by major building
elements in lieu of by drawing sheets
– Decisions are made earlier as to materials,
specifications and quantities
Manhour %
DESIGN LABOR
100
BIM Design
Traditional
50
0
Schematic
DD
Phase
CD
The
BIM
Path
First Steps
• Get Senior Management involved to
ensure leadership support
• Dedicate someone to the effort – BIM
Champion
• Prepare a BIM plan – keep it simple
and specific
Learning Curve
• It is generally accepted that there is an
initial cost and loss of productivity
while obtaining the necessary
resources as firms go through the
initial learning curve.
• Those firms who have made it through
this initial learning curve (on average
between 6 and 18 months) experience
the benefits.
Question: Yesterday vs. Today
• Yesterday: When & why adopt BIM?
• Today: How do we effectively deploy
it?
Software & Training Cost
• Design Software $3,200.00 +/- per user
• Navisworks $8,000.00 +/- per copy
• Training
Case Studies
Case Studies
• Sundt Office Building
• Cronkite School of Journalism, ASU
• Butler Treatment Plant
Sundt Corporate Office
Sundt Corporate Office
2-26-06
Structural vs
Systems
84 Clashes
5-14-07
Structural vs
Systems
4 Clashes
Butler Treatment Plant
Sequenced Work
Butler Treatment Plant
What isn’t seen is what hurts the most
Cronkite School of Journalism
Main Corridor
Above Ductwork
Main Corridor
Below Ductwork
Cronkite School of Journalism
Level 1 Fire Protection Clashes
• Orange – Ductwork
• Red – Mechanical Piping
Cronkite School of Journalism
Mechanical Room (Is this going to fit?)
Summary
• Use of BIM is leading to a revolution
in project delivery and facility
maintenance.
• The traditional tri-party approach to
design and construction will, over time,
be replaced by “Integrated Practice”
and collaboration
Examples
• Cityscape Construction Timeline
• Cronkite School of Journalism
Questions & Answers