integrating technology with lean construction nwccc november 17, 2010
TRANSCRIPT
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Integrating Technology with Lean ConstructionNWCCC
November 17, 2010
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Agenda
Lewis Lean Case Study: Modeled Work Packages Case Study: Bluebeam Case Study: SharePoint Q & A
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Minimize Waste
Optimize Delivery
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Minimize Waste
1. Reduce worker idle time2. Prevent accidents3. Avoid over/under design4. Optimize just in time delivery5. Eliminate unnecessary steps6. Prevent defects7. Shorten learning curve
Minimize Waste
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Optimize Delivery
1. Align goals2. Foster trust3. Establish accountability4. Ensure peak performance
Optimize Delivery
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Checklist
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Modeled Work Packages
Case Study
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Modeled Work Packages
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The Project: UW Housing Concrete Self-performed concrete work Design-bid-build delivery Lump sum, down-market bid
The Challenge: Accomplish tight schedule Prevent injuries and accidents Eliminate impacts and rework Beat aggressive labor budget
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The Approach: Put the Model in Our Crews’ Hands
Approach Technology Lean Objectives Fulfilled
1. Identify conflicts Revit Prevent defects
2. Visualize the work Revit Eliminate unnecessary steps
3. Segment the work Revit Ensure peak performance
4. Remove obstacles Last PlannerTM
Prevent defects
Prevent accidents
Foster trust
5. Set goals Lewis TC/WP Program Reduce worker idle time
Establish accountability
6. Provide feedback Lewis TC/WP Program Shorten learning curve
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The Approach: Combine the Model with Work Packages
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Identifying Document Conflicts Virtually, Not in the Field
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Using the Model’s Visualization to Plan the Work
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Plan Forming and Pours
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Identify Repetition for Prefab
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4D to Fine-Tune Schedule
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G2 – East: Conc: 52 CY Form: 3,062 SF
G2 – West: Conc: 55 CY Form: 3,122 SF
G1 – East: Conc: 75 CY Form: 4,356 SF
G1 – West: Conc: 72 CY Form: 4,076 SF
Quantities to Prorate Budgets
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Breaking Down the Model into the Work Segments
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Using Modeled Assembly Drawings to Execute the Work
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Many Types of Activities to Build
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Shear Walls: One Type of Activity
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G1 - West
Shear Walls: Broken into Segments
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G1 - East
Shear Walls: Broken into Segments
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G2 - West
Shear Walls: Broken into Segments
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G2 - East
Shear Walls: Broken into Segments
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G1 - West G1 - East
G2 - West G2 - East
Shear Walls: Broken into Segments
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Assembly Drawing for Each Segment
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Planning Work Packages to Remove Obstacles
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Coupling Modeled Assembly Dwgs with Work Packages
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Sharing the Budget with Our Crews for Goal Setting
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Shear walls total: Conc: 255 CY = 89 Hrs Form: 14,616 SF = 1,169 Hrs
Breaking the Budget into Segments
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Shearwalls
G2 – East G2 – West
G1 – East G1 – West
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Shearwalls
G2 – East: Conc: 52 CY Form: 3,062 SF
G2 – West: Conc: 55 CY Form: 3,122 SF
G1 – East: Conc: 75 CY Form: 4,356 SF
G1 – West: Conc: 72 CY Form: 4,076 SF
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Shearwalls
Conc. Placing = 0.35 MH/CY Wall Forming = 0.08 MH/SF
G2 – East: Conc: 52 CY Form: 3,062 SF
G2 – West: Conc: 55 CY Form: 3,122 SF
G1 – East: Conc: 75 CY Form: 4,356 SF
G1 – West: Conc: 72 CY Form: 4,076 SF
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Shearwalls
Conc. Placing = 0.35 MH/CY Wall Forming = 0.08 MH/SF
G2 – East: Conc: 52 CY = 18 Hrs Form: 3,062 SF = 245 Hrs
G2 – West: Conc: 55 CY = 19 Hrs Form: 3,122 SF = 250 Hrs
G1 – East: Conc: 75 CY = 26 Hrs Form: 4,356 SF = 349 Hrs
G1 – West: Conc: 72 CY = 25 Hrs Form: 4,076 SF = 326 Hrs
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G2 – West: Conc: 55 CY Form: 3,122 SF
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G2 – West: Conc: 55 CY Form: 3,122 SF
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G2 – West: Conc: 55 CY Form: 3,122 SF
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G2 – West: Conc: 55 CY Form: 3,122 SF
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Providing Feedback to Optimize Performance
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G2 – West: Conc: 55 CY Form: 3,122 SF
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G2 – West: Conc: 55 CY Form: 3,122 SF
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G2 – West: Conc: 55 CY Form: 3,122 SF
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Tracking the Work Segments to Optimize Productivity
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The Results: Exceeded budget goals Empowered crews Promoted safety Eliminated waste Promoted learning culture Ensured peak performance
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Bluebeam
Case Study
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Bluebeam
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The Projects: 362,000 Amazon Headquarters TI 5,000 SAM TI 250,000+ First & Main GSA
The Challenge: Efficient and timely drawing updates Multitude of Subcontractors
including owner subs Large open floor plans
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The Approach: Hyperlinked as-builts Electronic overlays Electronic punch list
The Technology: Bluebeam .pdf software
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SharePoint
Case Study
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SharePoint
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The Project: Shorenstein property 250,000+ First & Main GSA LEED gold TI 5 month duration 6 agencies over 12 floors
The Challenge: 6 contracts with 6 separate
document streams 5 architects, 4 engineers 24hr turn on submittals and RFIs
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GSA
Bldg Owner
Lewis
Subcontractors
A/E
VBACorporate
VBALocal
DEA Corporate
DEALocal
OIG Corporate
OIGLocal
AFRCorporate
AFRLocal
IRS-P Corporate
IRS-PLocal
IRS-TCorporate
IRS-TLocal
Project Tenants
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Traditional Approach: 6 couriered hardcopies Email / FTP sites Separate tracking/Log comparison
Waste: Delivery time Lost or inadvertent deletion of
Email Time spent tracking documents Working with the wrong file Confusing FTP sites
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The Approach: Go digital
The Technology: Utilize SharePoint to organize,
distribute and track project documentation
Sub
•Submit to Lewis
Lewis
•Review
•Submit to Architect
Arch
•Review
•Return to Lewis
Lewis
•Return to Subcontractor
Team
•Review
•Respond
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SharePoint
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Project Main Page
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User Specific Views
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Owner View
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Owner View
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Architect View
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Email Notifications
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Architect View
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Subcontractor View
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Subcontractor View
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Subcontractor View
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Subcontractor View
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Subcontractor View
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Live Shared As-builts
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The Result: Faster document review Reduction in Cost Report turnaround time Effective Meetings Less paper use
“Using Lewis’ SharePoint as a portal between the design team and contractor really helped to streamline the document exchange process. Given the compressed timeline of the GSA projects, I don't think we could have been able to meet the schedule without SharePoint. I would gladly use it again and would look for ways to implement a similar technology in my own organization.”
Whit Middlecoff, AIAGBD ARCHITECTS Incorporated
“