MY LEAN + BIM JOURNEY
Nathan Wood, Chief Enabling Officer
@nathancwood
@SpectrumAEC
Boulder, CO
Austin, TX
San Francisco, CA
Falls Church, VA
The Journey to DPR Construction & BIM
BIM Research Assignment: Abu Dhabi
DPR Consulting: Implementing 5D Collaboration
www.bestppt.com
People, Process, & Technology
Mission
www.bestppt.com
WHA
THOW
WHY
?
BIM Definition
US National BIM Standard v1, 2007
“A digital representation of physical and functional characteristics of
a facility. A BIM is a shared knowledge resource for information
about a facility forming a reliable basis for decisions during its life-
cycle; defined as existing from earliest conception to demolition.”
SUTTER CASTRO VALLEY
WHY: Sutter Health + OSHPD State Requirements
Seismic Fault Lines
San Francisco Bay, CA
Structure & Façade CoordinationWHAT: Detailed BIM of Structure & Façade
30%
Reduction in
Schedule
No
Rework
(MEP)
As-Built
Model
Increase
Field Crew
Production
HOW: BIM + Lean + Integrated Project Delivery
3D Detailing and Coordination in Tekla
Shop Drawing Generation is Direct Output from Tekla Model
BIM Use: Direct 3D to 2D Field Drawings
The First Discovery: Rebar vs. Precast Sleeve
• 200+ Facade penetrations or embed were coordinated with rebar and MEP.
• Precast subcontractor did not originally account for rebar spacing during design.
• Over 25% of Connection designs were changed due to BIM Coordination
BIM Use: Precast Façade Connections
BIM = Better Productivity & QualityBenefit: Quality Control + Increased Productivity
DPR Concrete reported 10% Productivity Increase from BIM shop drawings process.
Architect
Design Assist
3D Model
Design Drawings
Shop Drawings
Comments
Permit
Lesson Learned: Design Assist Permit Process
A Coordinated BIM is only as valuable as the
deliverable that it produces!
Design Drawings
?
=
? Shop Drawings
The Question Becomes…Risk: Design to Fabrication Reliability
How do you check?Countermeasure: 2D Fabrication to BIM
Design Assist Subcontractors Provided CAD to Align in Tekla
From 2D Shop Drawings…..From 2D to 3D BIM ….. Not Lean, but Effective!
Precast 2D
Elevation
Elevation in
Fab Model
BIM Use: Complex Detail Coordination (BIM + IPD)
Coordinated in the Model
Revised Shop Drawing
Benefit: BIM to Fabrication Reliability
BIM Use: 2D Detail Constructability Review
Tapered Roof InsulationBIM Use: Podium Roof Design Coordination
• OSHPD requires minimum distance between roof penetrations
• 30+ locations where tapered insulation fell above kicker connections
• OPTION #1: Spend $50K + schedule delay to move existing screen posts
BIM + Lean: Last Responsible Moment
• OPTION #2: Roof Slope redesigned 4 weeks prior to roof concrete pour
• Required 3 new drains to be coordinated with existing MEP BIM
TRUST: CONSTRUCTABILITY INPUTHOW: Shared Risk & Reward with MEP Trades
• Routed 3 additional drains to a nearby riser in BIM
• New drainage calculation of the redesigned sloping
• Confirmed LEED requirements of roof still held
• Poured concrete roof slab on schedule
TRUST: TRADES INSTALL FROM BIMBIM Use: Automated Spool Fabrication from BIM
Courtesy of McClanahan Plumbing
SYNERGY: BIM + TOTAL STATIONBIM Use: Integrated Total Station Layout
Use of Robotic Total Station (RTS) in Conjunction
with Coordinated MEP Inserts in BIM
4X Productivity Compared to Conventional Layout
Courtesy of McClanahan Plumbing
Drywall Spool Sheets Direct from
Coordinated BIM
TRUST: IMPROVED FRAMING PROCESSBIM Use: Drywall Framing Productivity & Rework
Credit: DPR Drywall
50-95%
Reduction
in Rework
Benefits: Installation Metrics (Castro Valley)
0%
5%
10%
Mech
Plumb
Electrical
Drywall
Rework (%) By Trade
Baseline
Actual
5-28%
Increase in Productivity
0%
10%
20%
30%
Mech
Plumb
Electrical
Drywall
Productivity Increase
% By Trade
Planned
Actual
SUTTER CASTRO VALLEY
SUTTER ALTA BATES
Fall 2010: Transferring Lessons to Alta Bates
New Project, New Risks: Sutter Alta Bates
Complex Project Site
Unforseen Conditions
Seismic Expansion Joint Connections
BIM Use: Modeling of Temporary Structures
Rebar Scope Gap:
Tower Crane Anchor
Tower Crane Design:
Height Requirement & Radius Limits
BIM Use: Façade Constructability Comments
Visual Pour Planning
BIM Use: Concrete Planning & Layout
Enhanced Concrete
Lift Drawings
Total Station Layout Integration
Project ChallengesRisk: BIM vs. Field Reliability
?
=
?
Robotic Total Station
Better for model vs. field comparison
of large areas/entire site
Countermeasure: Digital As-Builting
Better for specific points (end of wall,
bottom of door threshold, etc)
Laser Scanning
Courtesy of Trimble Navigation ltd.
BIM Use: Modeling of Unforseen Conditions
Design allows for maximum 3” tolerance for placement of piles
As-Built pile layout showed deviations up to 12” in more difficult locations
Risk: Misplaced Piles & Rebar Design Changes
Robotic Total Station points were captured immediately following pile placement
to early identify misplaced piles and begin design change and approval process
Within Tolerance
Out of Tolerance – Change in Rebar
Out of Tolerance –No Rebar Changes
BIM Use: Digital Check for Deviations
BIM Use: Coordination of Rebar & Structural Steel
2D constructability markup
Steel Plate Penetrations Aligned
with new Rebar Design
The Process
2D Shop
Drawings
Shop Drawing
Review
Fabricate
Rebar
Install Rebar
3D Model
Lean Innovation: Cloud Rebar Submittal Reviews
Cloud Comment Responses = No Resubmittal
BIM Use: Macro 4D Visualization of Trades
1. Pour Concrete
Basement Walls
2. Erect Steel Frame
3. Follow behind with
Concrete Core Walls
BIM Use: Micro 4D Constructability Analysis
4D Clash: Welding Access
4D Clash: Welding Access
Form 2’x2’ opening in
wall for welding access
Leave out section of
wall prior to steel
Communicate Design Changes in BIM
Patch opening after
welding complete
Communicate Design Changes in BIM
Pour section
with core wall
BIM Enabled Design Change Approvals
Risk: Civil/Structural Design Coordination
BIM Use: Overlay of Revit Structure & Civil 3D
Countermeasure: Define Rebar Design in BIM
Pull 2D Detail from BIM for OSHPD Drawing
Integrate x,y,z Total Station Layout from BIM
=
Success Metric: Early Schedule Savings
Concrete Foundations
31 Days
Of Critical Path Schedule
Recovered over 10 Months
33%
Time Savings Per
Submittal Review
A Tale of Two Projects: IPD Lessons Learned
Castro Valley Delivered
6 Weeks
Ahead of Schedule
Maintained
Target Cost
Alta Bates Delivered
6 Months
Behind Schedule
20 Million
Over Target Cost
BIM?IPD? LEAN?
The Castro Valley Difference: Culture
Team members chorus: Don’t try this with strangers.
Expect lengthy contract negotiations and endless
meetings.
Be vigilant about communicating.
“The actual effort required was underestimated on
both the design and construction sides,” says James
Mobley, a Devenney principal.
The Tipping Point of BIM Value Starts with….
Design Model vs Construction Model
Composite Overlay
Design Model Fabrication Model
Reactive Quality Control of Design Hanoff
Exposed Areas of Poor Communication
TOOL
SHIFTING THE INDUSTRY PARADIGM
PEOPLE PROCESS
BIM is just a Tool1
This Tool is only as good as
the People using It
2
The People can only be as
effective as the Process allows them to be
3
The Role of BIM in Design & Construction
Christian, D., Bredbury, J., Emdanat, S., Haase, F., Kunz, A., Rubel, Z. and Ballard, G. (2014). “Four-phase project delivery and the pathway to
perfection.” In: Proc. 22nd Ann. Conf. of the Int’l Group for Lean Construction, IGLC-22, Oslo, Norway, June 25- 27. Available at <www.iglc.net>
Trust in BIM Starts with Lean Handoffs
3D Model 2D Drawings
DesignFabrication
62
Challenge: BIM Handoffs in the Real World
• Does this…..
• Equal this?
Design Model
Fabrication Model
Risk: Loss of Reliable BIM for Coordination
64
Risk: BIM Coordination Sequence & LOD
3D Model 2D Drawings
DesignerDetailer
65
Risk: New Process, Old Contract?
“Virtually everyone in the
construction supply chain works
on contracts where the incentive
is to maximize their gain at the
expense of others”
Macomber, John D. 2003 ASCE Report:
“Follow the Money: What Really Drives
Technology Innovation In Construction”
Root Cause Analysis: Contract Incentives
Result: Insufficient Funding for Technology
0 1 2 3 4 5 6 7
Construction
Energy
Manufacturing
Transportation
Healthcare
Education
Finance
IT Spending as a % of Revenue, By Industry [Gartner 2014]
3.3%
Cross-Industry
Average
3.3x
Investment Gap
ARE WE RIPE FOR DISRUPTION?
“It’s more likely…that new firms with new business
models and new areas of focus will leverage the
financial and technological innovations that will
change the nature of competition”
-Clayton Christensen, 1997
The Future of BIM Adoption in USA
IPD Contract Relationship
-
Design-Build Contract Structure
-
?
=
?
“BIM-Centric” “Data-Centric”
2012 2016
69
The Language of BIM has Evolved
Data
Centric
Integration Brings Efficiency & Reliability
Drawing
Centric
Task
Centric
BIM
Centric
Time
Centric
Media
Centric
Integrated BIM Requires Integrated Data
Where is Brazil along the ‘BIM Hype’ Journey?
Integrated BIM is Our Most Valuable Tool
Key Factors Impacting Poor Cost & Schedule
[McKinsey]
Poor Organization Missed Connections
Inadequate
Communication
Poor Short Term
Planning
Flawed Performance
Management
Insufficient Risk
Management
Contractual
Misunderstandings
Limited Talent
Management
“Lack of Technology” isn’t the Root Cause
It Starts with the Right People in the Right Place
Efficient Data
Capture
Reliable Data
Analytics
Solving the BIM + Lean Dilemma
Profile
Location
Sheet A232B
Creation Date
Status Data
Assess Align Advance
Adoption of BIM Requires Early Input
Profitable BIM Requires a Balance Between
BIM & Data
Standards
Aligned Purpose &
Behaviors
Lean Process
Innovation
www.bestppt.com
@nathancwood
@SpectrumAEC

My Lean + BIM Journey [Nathan Wood, Brazil Lean Conference]

  • 1.
    MY LEAN +BIM JOURNEY Nathan Wood, Chief Enabling Officer @nathancwood @SpectrumAEC
  • 2.
    Boulder, CO Austin, TX SanFrancisco, CA Falls Church, VA The Journey to DPR Construction & BIM
  • 3.
  • 4.
  • 5.
  • 6.
    www.bestppt.com WHA THOW WHY ? BIM Definition US NationalBIM Standard v1, 2007 “A digital representation of physical and functional characteristics of a facility. A BIM is a shared knowledge resource for information about a facility forming a reliable basis for decisions during its life- cycle; defined as existing from earliest conception to demolition.”
  • 7.
    SUTTER CASTRO VALLEY WHY:Sutter Health + OSHPD State Requirements Seismic Fault Lines San Francisco Bay, CA
  • 8.
    Structure & FaçadeCoordinationWHAT: Detailed BIM of Structure & Façade
  • 9.
  • 10.
    3D Detailing andCoordination in Tekla Shop Drawing Generation is Direct Output from Tekla Model BIM Use: Direct 3D to 2D Field Drawings
  • 11.
    The First Discovery:Rebar vs. Precast Sleeve • 200+ Facade penetrations or embed were coordinated with rebar and MEP. • Precast subcontractor did not originally account for rebar spacing during design. • Over 25% of Connection designs were changed due to BIM Coordination BIM Use: Precast Façade Connections
  • 12.
    BIM = BetterProductivity & QualityBenefit: Quality Control + Increased Productivity DPR Concrete reported 10% Productivity Increase from BIM shop drawings process.
  • 13.
    Architect Design Assist 3D Model DesignDrawings Shop Drawings Comments Permit Lesson Learned: Design Assist Permit Process
  • 14.
    A Coordinated BIMis only as valuable as the deliverable that it produces! Design Drawings ? = ? Shop Drawings The Question Becomes…Risk: Design to Fabrication Reliability
  • 15.
    How do youcheck?Countermeasure: 2D Fabrication to BIM Design Assist Subcontractors Provided CAD to Align in Tekla
  • 16.
    From 2D ShopDrawings…..From 2D to 3D BIM ….. Not Lean, but Effective!
  • 17.
    Precast 2D Elevation Elevation in FabModel BIM Use: Complex Detail Coordination (BIM + IPD)
  • 18.
    Coordinated in theModel Revised Shop Drawing Benefit: BIM to Fabrication Reliability
  • 19.
    BIM Use: 2DDetail Constructability Review
  • 20.
    Tapered Roof InsulationBIMUse: Podium Roof Design Coordination • OSHPD requires minimum distance between roof penetrations • 30+ locations where tapered insulation fell above kicker connections • OPTION #1: Spend $50K + schedule delay to move existing screen posts
  • 21.
    BIM + Lean:Last Responsible Moment • OPTION #2: Roof Slope redesigned 4 weeks prior to roof concrete pour • Required 3 new drains to be coordinated with existing MEP BIM
  • 22.
    TRUST: CONSTRUCTABILITY INPUTHOW:Shared Risk & Reward with MEP Trades • Routed 3 additional drains to a nearby riser in BIM • New drainage calculation of the redesigned sloping • Confirmed LEED requirements of roof still held • Poured concrete roof slab on schedule
  • 23.
    TRUST: TRADES INSTALLFROM BIMBIM Use: Automated Spool Fabrication from BIM Courtesy of McClanahan Plumbing
  • 24.
    SYNERGY: BIM +TOTAL STATIONBIM Use: Integrated Total Station Layout Use of Robotic Total Station (RTS) in Conjunction with Coordinated MEP Inserts in BIM 4X Productivity Compared to Conventional Layout Courtesy of McClanahan Plumbing
  • 25.
    Drywall Spool SheetsDirect from Coordinated BIM TRUST: IMPROVED FRAMING PROCESSBIM Use: Drywall Framing Productivity & Rework Credit: DPR Drywall
  • 26.
    50-95% Reduction in Rework Benefits: InstallationMetrics (Castro Valley) 0% 5% 10% Mech Plumb Electrical Drywall Rework (%) By Trade Baseline Actual 5-28% Increase in Productivity 0% 10% 20% 30% Mech Plumb Electrical Drywall Productivity Increase % By Trade Planned Actual
  • 27.
    SUTTER CASTRO VALLEY SUTTERALTA BATES Fall 2010: Transferring Lessons to Alta Bates
  • 28.
    New Project, NewRisks: Sutter Alta Bates Complex Project Site Unforseen Conditions Seismic Expansion Joint Connections
  • 29.
    BIM Use: Modelingof Temporary Structures Rebar Scope Gap: Tower Crane Anchor Tower Crane Design: Height Requirement & Radius Limits
  • 30.
    BIM Use: FaçadeConstructability Comments
  • 31.
    Visual Pour Planning BIMUse: Concrete Planning & Layout Enhanced Concrete Lift Drawings Total Station Layout Integration
  • 32.
    Project ChallengesRisk: BIMvs. Field Reliability ? = ?
  • 33.
    Robotic Total Station Betterfor model vs. field comparison of large areas/entire site Countermeasure: Digital As-Builting Better for specific points (end of wall, bottom of door threshold, etc) Laser Scanning
  • 34.
    Courtesy of TrimbleNavigation ltd. BIM Use: Modeling of Unforseen Conditions
  • 35.
    Design allows formaximum 3” tolerance for placement of piles As-Built pile layout showed deviations up to 12” in more difficult locations Risk: Misplaced Piles & Rebar Design Changes
  • 36.
    Robotic Total Stationpoints were captured immediately following pile placement to early identify misplaced piles and begin design change and approval process Within Tolerance Out of Tolerance – Change in Rebar Out of Tolerance –No Rebar Changes BIM Use: Digital Check for Deviations
  • 37.
    BIM Use: Coordinationof Rebar & Structural Steel 2D constructability markup Steel Plate Penetrations Aligned with new Rebar Design
  • 38.
    The Process 2D Shop Drawings ShopDrawing Review Fabricate Rebar Install Rebar 3D Model Lean Innovation: Cloud Rebar Submittal Reviews
  • 39.
    Cloud Comment Responses= No Resubmittal
  • 40.
    BIM Use: Macro4D Visualization of Trades
  • 41.
    1. Pour Concrete BasementWalls 2. Erect Steel Frame 3. Follow behind with Concrete Core Walls BIM Use: Micro 4D Constructability Analysis
  • 42.
  • 43.
  • 44.
    Form 2’x2’ openingin wall for welding access Leave out section of wall prior to steel Communicate Design Changes in BIM
  • 45.
    Patch opening after weldingcomplete Communicate Design Changes in BIM
  • 46.
    Pour section with corewall BIM Enabled Design Change Approvals
  • 47.
  • 48.
    BIM Use: Overlayof Revit Structure & Civil 3D
  • 49.
  • 50.
    Pull 2D Detailfrom BIM for OSHPD Drawing
  • 51.
    Integrate x,y,z TotalStation Layout from BIM
  • 52.
    = Success Metric: EarlySchedule Savings Concrete Foundations 31 Days Of Critical Path Schedule Recovered over 10 Months 33% Time Savings Per Submittal Review
  • 54.
    A Tale ofTwo Projects: IPD Lessons Learned Castro Valley Delivered 6 Weeks Ahead of Schedule Maintained Target Cost Alta Bates Delivered 6 Months Behind Schedule 20 Million Over Target Cost
  • 55.
  • 56.
    The Castro ValleyDifference: Culture Team members chorus: Don’t try this with strangers. Expect lengthy contract negotiations and endless meetings. Be vigilant about communicating. “The actual effort required was underestimated on both the design and construction sides,” says James Mobley, a Devenney principal.
  • 57.
    The Tipping Pointof BIM Value Starts with….
  • 58.
    Design Model vsConstruction Model Composite Overlay Design Model Fabrication Model Reactive Quality Control of Design Hanoff
  • 59.
    Exposed Areas ofPoor Communication
  • 60.
    TOOL SHIFTING THE INDUSTRYPARADIGM PEOPLE PROCESS BIM is just a Tool1 This Tool is only as good as the People using It 2 The People can only be as effective as the Process allows them to be 3 The Role of BIM in Design & Construction
  • 61.
    Christian, D., Bredbury,J., Emdanat, S., Haase, F., Kunz, A., Rubel, Z. and Ballard, G. (2014). “Four-phase project delivery and the pathway to perfection.” In: Proc. 22nd Ann. Conf. of the Int’l Group for Lean Construction, IGLC-22, Oslo, Norway, June 25- 27. Available at <www.iglc.net> Trust in BIM Starts with Lean Handoffs
  • 62.
    3D Model 2DDrawings DesignFabrication 62 Challenge: BIM Handoffs in the Real World
  • 63.
    • Does this….. •Equal this? Design Model Fabrication Model Risk: Loss of Reliable BIM for Coordination
  • 64.
  • 65.
    3D Model 2DDrawings DesignerDetailer 65 Risk: New Process, Old Contract?
  • 66.
    “Virtually everyone inthe construction supply chain works on contracts where the incentive is to maximize their gain at the expense of others” Macomber, John D. 2003 ASCE Report: “Follow the Money: What Really Drives Technology Innovation In Construction” Root Cause Analysis: Contract Incentives
  • 67.
    Result: Insufficient Fundingfor Technology 0 1 2 3 4 5 6 7 Construction Energy Manufacturing Transportation Healthcare Education Finance IT Spending as a % of Revenue, By Industry [Gartner 2014] 3.3% Cross-Industry Average 3.3x Investment Gap
  • 68.
    ARE WE RIPEFOR DISRUPTION? “It’s more likely…that new firms with new business models and new areas of focus will leverage the financial and technological innovations that will change the nature of competition” -Clayton Christensen, 1997 The Future of BIM Adoption in USA IPD Contract Relationship - Design-Build Contract Structure - ? = ?
  • 69.
  • 70.
    Data Centric Integration Brings Efficiency& Reliability Drawing Centric Task Centric BIM Centric Time Centric Media Centric Integrated BIM Requires Integrated Data
  • 71.
    Where is Brazilalong the ‘BIM Hype’ Journey?
  • 72.
    Integrated BIM isOur Most Valuable Tool
  • 73.
    Key Factors ImpactingPoor Cost & Schedule [McKinsey] Poor Organization Missed Connections Inadequate Communication Poor Short Term Planning Flawed Performance Management Insufficient Risk Management Contractual Misunderstandings Limited Talent Management “Lack of Technology” isn’t the Root Cause
  • 74.
    It Starts withthe Right People in the Right Place
  • 75.
  • 76.
  • 77.
    Assess Align Advance Adoptionof BIM Requires Early Input
  • 78.
    Profitable BIM Requiresa Balance Between BIM & Data Standards Aligned Purpose & Behaviors Lean Process Innovation
  • 79.

Editor's Notes

  • #9 Concrete shear walls along perimeter on L1-3 Congested reinforcing in boundary elements 500 wall embeds and penetrations for precast
  • #35 As unforseen conditions were discovered, trimble total station was used to document as-built location of obstructions, so that we could bring them into the model to see what future construction it would impact
  • #61 TRAINER NOTE: We are shifting our mindset away from the notion that everyone needs to know everything about BIM. Instead, we should be thinking about BIM as a Construction Tool that needs to be used by the right people at the right time to input construction knowledge into the model. And we need to make sure that our BIM processes are aligned with our current roles, so that it doesn’t create additional work. ADDITIONAL INFO: Bullet point 3 can seem controversial at first. What we’re trying to say is that a poorly planned process (or no process at all) can limit a person’s ability to perform – regardless of experience, talent, knowledge, etc. Example: Navisworks is a particular BIM tool. If I were an expert at using Navisworks, but had no idea how to apply that to coordinating building systems – my skills would be useless. The process can be “make or break”.
  • #63 Animation describes the current process from a designer revit model to flattened 2D drawings for steel fabrication.