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Virtual Design and Construction Case Study
Martin FischerCristina Garcia
Calvin KamJohn Kunz
Kathleen ListonMarcus Schreyer
Vibha Singhal
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Source: DPR
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Virtual Design and Construction Case Study
Case Overview• Baseline• Delay• Acceleration• Summary and Analysis
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Site Plan
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Construction Photos and Site Context
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Virtual Design and Construction Case Study
Case Overview• Baseline• Delay• Acceleration• Summary and Analysis
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Site Plan
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Construction Photos and Site Context
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Virtual Design and Construction Case Study
Case Overview• Baseline• Delay• Acceleration• Summary and Analysis
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Site Plan
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Construction Photos and Site Context
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Virtual Design and Construction Case Study
Case Overview• Baseline• Delay• Acceleration• Summary and Analysis
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Site Plan
AP
AR
AT
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Construction Photos and Site Context
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Virtual Design and Construction Case Study
Case Overview• Baseline• Delay• Acceleration• Summary and Analysis
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Common Point 4D Color Legend for iRoom Demo
SimVision Color Legend for iRoom Demo
Direct Work Hidden Work
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3D Legend Diagram
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Virtual Design and Construction Case Study
• Case Overview Baseline• Delay• Acceleration• Summary and Analysis
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Baseline Case
• Target 2002 Thanksgiving and Christmas season• Tight site -> single crew per trade• Low coordination risk, but little slack
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Functional Requirements (Time and Cost)Predicted
CompletionPredicted
Project Cost
Turnover Baseline Baseline
Overall Project 11/1/02 10/30/02 13,100$ 13,069$ slack (days) 2 99.8%
Bookstore 10/1/02 9/19/02 930$ 930$ slack (days) 12 100.0%
Retail 10/15/02 10/2/02 2,170$ 2,171$ slack (days) 13 100.0%
Theater 10/15/02 10/10/02 6,770$ 6,757$ slack (days) 5 99.8%
Required Dates
Budget
Date Legend:
Cost Legend: Below 1% Over BudgetOver Budget by more than 3%
Within Budget1-3% Over Budget
Up to 30-day lateMore than 50-day late31 to 50-day late
Ahead of Time$ (in thousands)
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Virtual Design and Construction Case Study
• Case Overview Baseline• Delay• Acceleration• Summary and Analysis
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DESCRIPTIVE (40%)
• When do we have access to retail zone AR-7?• Where are you placing the crane?
EXPLANATIVE (20%)• What drives the turnover date for the theater?
PREDICTIVE (10%) • Can we get access to the parking a week earlier?
EVALUATIVE (30%)• Which acceleration alternative is better?
How we spend time in meetings
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4D Demo (Plan View)
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4D Demo (Perspective View)
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MSP and Time-Controller Demo
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Virtual Design and Construction Case Study
• Case Overview Baseline• Delay• Acceleration• Summary and Analysis
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SimVision Demo(highlights activity received from
MSP)
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MSP sends activity to SimVision
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Virtual Design and Construction Case Study
• Case Overview Baseline• Delay• Acceleration• Summary and Analysis
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Micro View
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Macro View—Organization and Process
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Virtual Design and Construction Case Study
• Case Overview Baseline• Delay• Acceleration• Summary and Analysis
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Predicted Critical Path
Predicted Work Composition
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Schedule Growth Risk
Predicted Work Composition
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Virtual Design and Construction Case Study
• Case Overview• Baseline Delay• Acceleration• Summary and Analysis
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Delay Case
• Hazardous materials found during excavation 2-month delay (MSP #56)
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4D Demo (Baseline Case)
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4D Demo (Delay Case)
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MSP+Time Controller Demo(Delay Case)
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Virtual Design and Construction Case Study
• Case Overview• Baseline Delay• Acceleration• Summary and Analysis
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Functional Requirements (Time)
Turnover Baseline Delay
Overall Project 11/1/02 10/30/02 1/8/03slack (days) 2 -68
Bookstore 10/1/02 9/19/02 11/25/02slack (days) 12 -55
Retail 10/15/02 10/2/02 12/10/02slack (days) 13 -56
Theater 10/15/02 10/10/02 12/11/02slack (days) 5 -57
Client Requirements
Predicted Completion Dates
Date Legend:
Cost Legend:
Up to 30-day lateMore than 50-day late31 to 50-day late
Ahead of Time
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Functional Requirements (Cost)
Turnover Baseline Delay
Overall Project 13,100$ 13,069$ 13,171$
slack (days) 99.8% 100.5%
Bookstore 930$ 930$ 930$ slack (days) 100.0% 100.0%
Retail 2,170$ 2,171$ 2,171$ slack (days) 100.0% 100.0%
Theater 6,770$ 6,757$ 6,757$ slack (days) 99.8% 99.8%
Budget
Predicted Project Cost
Date Legend:
Cost Legend: Below 1% Over BudgetOver Budget by more than 3%
Within Budget1-3% Over Budget
$ (in thousands)
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Virtual Design and Construction Case Study
• Case Overview• Baseline• Delay Acceleration• Summary and Analysis
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How to accelerate construction?
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Virtual Design and Construction Case Study
• Case Overview• Baseline• Delay Acceleration• Summary and Analysis
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4D DemoOpportunities for Acceleration
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MSP DemoOpportunities for Acceleration
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Virtual Design and Construction Case Study
• Case Overview• Baseline• Delay Acceleration• Summary and Analysis
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Acceleration—Hybrid Case
Concrete Acceleration
• Add crew on pile caps and grade beams (MSP #85, 151)• Add horizontal formwork for soffits 2 and 3 (MSP #263, 270)• Reuse horizontal formwork for theater Lv3 (MSP #421, 428)• Rebar crew works overtime (11-hour day) • Add crew for bolt-up and welding
Steel Acceleration
• Add crew for fireproofing • Steel erection and slab-on-deck crews work overtime work (11-hour day)• MSP #708-737, 807-823
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Concrete Acceleration
• Add crew on pile caps and grade beams (MSP #85, 151)• Add horizontal formwork for soffits 2 and 3 (MSP #263, 270)• Reuse horizontal formwork for theater Lv3 (MSP #421, 428)• Rebar crew works overtime (11-hour day) • Add crew for bolt-up and welding
Steel Acceleration
• Add crew for fireproofing • Steel erection and slab-on-deck crews work overtime work (11-hour day)• MSP #708-737, 807-823
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4D Demo(Hybrid Acceleration)
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MSP Demo(Hybrid Acceleration)
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Virtual Design and Construction Case Study
• Case Overview• Baseline• Delay Acceleration• Summary and Analysis
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Predicted Critical Path
Predicted Work Composition
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Position Backlog
Resource Allocation
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Virtual Design and Construction Case Study
• Case Overview• Baseline• Delay Acceleration• Summary and Analysis
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Comparison of Predicted Finish Dates
Comparison of Predicted Work Composition
Hybrid Acceleration
Delay Case
Hybrid Acceleration
Delay Case
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Comparison of Predicted Work Breakdown
Hybrid Acceleration
Delay Case
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Virtual Design and Construction Case Study
• Case Overview• Baseline• Delay• Acceleration Summary and Analysis
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Functional Requirements (Time)
Turnover Baseline DelayConcrete
Accel.Steel Accel.
Hybrid Accel.
Overall Project 11/1/02 10/30/02 1/8/03 12/18/02 12/11/02 11/19/02slack (days) 2 -68 -47 -40 -18
Bookstore 10/1/02 9/19/02 11/25/02 11/5/02 10/29/02 10/9/02slack (days) 12 -55 -35 -28 -8
Retail 10/15/02 10/2/02 12/10/02 11/18/02 11/11/02 10/22/02slack (days) 13 -56 -34 -27 -7
Theater 10/15/02 10/10/02 12/11/02 11/12/02 11/20/02 10/24/02slack (days) 5 -57 -28 -36 -9
Legend:
Required Dates
Predicted Completion Dates
Up to 30-day lateMore than 50-day late31 to 50-day late
Ahead of Time
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Functional Requirements (Cost)
$ (in thousands) Baseline DelayConcrete
Accel.Steel Accel.
Hybrid Accel.
Overall Project 13,100$ 13,069$ 13,171$ 13,410$ 13,491$ 13,649$
99.8% 100.5% 102.4% 103.0% 104.2%
Bookstore Turnover 930$ 930$ 930$ 931$ 970$ 971$ 100.0% 100.0% 100.1% 104.3% 104.4%
Retail Turnover 2,170$ 2,171$ 2,171$ 2,173$ 2,264$ 2,265$ 100.0% 100.0% 100.1% 104.3% 104.4%
Theater Turnover 6,770$ 6,757$ 6,757$ 6,941$ 6,906$ 7,091$ 99.8% 99.8% 102.5% 102.0% 104.7%
Legend:
Budget
Below 1% Over BudgetOver Budget by more than 3%
Predicted Project Cost
Within Budget1-3% Over Budget
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Virtual Design and Construction Case Study
• Case Overview• Baseline• Delay• Acceleration Summary and Analysis
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Project Total Cost
$0
$2,000,000
$4,000,000
$6,000,000
$8,000,000
$10,000,000
$12,000,000
$14,000,000
$16,000,000
4/19/01 7/28/01 11/5/01 2/13/02 5/24/02 9/1/02 12/10/02 3/20/03
Finish Date
Co
st
BaselineDelayConcreteSteelHybrid
cost increases as schedule is shortened
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Alternative Solution Trade-offs
$0
$100,000
$200,000
$300,000
$400,000
$500,000
$600,000
$700,000
0 10 20 30 40 50 60
Recovered Days
Ad
dit
ion
al C
ost
Delay
Concrete
Steel
Hybrid
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Virtual Design and Construction Case Study
• Case Overview• Baseline• Delay• Acceleration Summary and Analysis
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Project Total Cost
$0
$2,000,000
$4,000,000
$6,000,000
$8,000,000
$10,000,000
$12,000,000
$14,000,000
$16,000,000
4/19/01 7/28/01 11/5/01 2/13/02 5/24/02 9/1/02 12/10/02 3/20/03
Finish Date
Co
st
BaselineDelayConcreteSteelHybrid
cost increases as schedule is shortened
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Acceleration Cost
0
10
20
30
40
50
60
$102,000 $341,312 $422,279 $580,093
Additional Cost
Re
co
ve
red
Da
ys
Hybrid
Steel
Concrete
Delay
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Virtual Design and Construction Case Study
• Case Overview• Baseline• Delay• Acceleration Summary and Analysis
![Page 74: Virtual Design and Construction Case Study Martin Fischer Cristina Garcia Calvin Kam John Kunz Kathleen Liston Marcus Schreyer Vibha Singhal](https://reader036.vdocument.in/reader036/viewer/2022062619/55165b035503469d698b4f54/html5/thumbnails/74.jpg)
ProductNo change(4D Model)
Acceleration is possible(MS Project)Acceleration costs money(Excel)
Coordination needs increase as schedule accelerates(SimVision)
Organization
Process
VDC(iRoom)
Summary of alternative analyses
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The Macro Problem
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Virtual Design and Construction Case Study
• Case Overview• Baseline• Delay• Acceleration Summary and Analysis
![Page 77: Virtual Design and Construction Case Study Martin Fischer Cristina Garcia Calvin Kam John Kunz Kathleen Liston Marcus Schreyer Vibha Singhal](https://reader036.vdocument.in/reader036/viewer/2022062619/55165b035503469d698b4f54/html5/thumbnails/77.jpg)
to be the world’s premier academic research center for Virtual Design and Construction
• Virtual Design and Construction: develop and test new ways to model, visualize, analyze and evaluate the multi-disciplinary performance of design–construction projects to support explicit business objectives
• Education: increase awareness of the value and costs of strategic IT for practitioners and Stanford students
CIFE Mission
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• Need: macro and micro problems require timely stakeholder involvement
• Tools available, effective, affordable– iRoom, 4D, organization, TEI, …
• Objectives and metrics exist– Management theory– Manufacturing
• Actions: 1. Plan your VDC implementation strategy2. Become CIFE member; plan pilot
RateBaseline
($K) ChangeYear-1
(K$)Revenue 100,000 2% 102,000Cost of contracted work 85% 85,000 -2.0% 84,660Cost of self-performed work 10% 10,000 2.0% 12,240Gross Margin 5,000 5,100Sales, G&A 2% 2,000 2,040IT investment 70Amortized costs of IT/yr 33% 23Net income 3,000 3,037Time to payback (years) 1.9Net Income change (%) 1.2
Call to Action for VDC
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Virtual Design and Construction Case Study
• Case Overview• Baseline• Delay• Acceleration Summary and Analysis
![Page 80: Virtual Design and Construction Case Study Martin Fischer Cristina Garcia Calvin Kam John Kunz Kathleen Liston Marcus Schreyer Vibha Singhal](https://reader036.vdocument.in/reader036/viewer/2022062619/55165b035503469d698b4f54/html5/thumbnails/80.jpg)
• Build project model early, before committing large money or time
• What– Product, process, organization
• How: – Detailed: to show the product, process, organization
entities that use significant project time, money– Virtual: in the computer– Visual: multi-discipline, multi-view, for multiple
stakeholders– Objective-based: set and track explicit public objectives
VDC Big Ideas
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• Need: macro and micro problems require timely stakeholder involvement
• Tools available, effective, affordable– iRoom, 4D, organization, TEI, …
• Objectives and metrics exist– Management theory– Manufacturing
• Actions: 1. Plan your VDC implementation strategy2. Become CIFE member; plan pilot
RateBaseline
($K) ChangeYear-1
(K$)Revenue 100,000 2% 102,000Cost of contracted work 85% 85,000 -2.0% 84,660Cost of self-performed work 10% 10,000 2.0% 12,240Gross Margin 5,000 5,100Sales, G&A 2% 2,000 2,040IT investment 70Amortized costs of IT/yr 33% 23Net income 3,000 3,037Time to payback (years) 1.9Net Income change (%) 1.2
Call to Action for VDC
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The End
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The End
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The End