virtual design and construction case study martin fischer cristina garcia calvin kam john kunz...
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Virtual Design and Construction Case Study
Martin FischerCristina Garcia
Calvin KamJohn Kunz
Kathleen ListonMarcus Schreyer
Vibha Singhal
Source: DPR
Virtual Design and Construction Case Study
Case Overview• Baseline• Delay• Acceleration• Summary and Analysis
Site Plan
Construction Photos and Site Context
Virtual Design and Construction Case Study
Case Overview• Baseline• Delay• Acceleration• Summary and Analysis
Site Plan
Construction Photos and Site Context
Virtual Design and Construction Case Study
Case Overview• Baseline• Delay• Acceleration• Summary and Analysis
Site Plan
Construction Photos and Site Context
Virtual Design and Construction Case Study
Case Overview• Baseline• Delay• Acceleration• Summary and Analysis
Site Plan
AP
AR
AT
Construction Photos and Site Context
Virtual Design and Construction Case Study
Case Overview• Baseline• Delay• Acceleration• Summary and Analysis
Common Point 4D Color Legend for iRoom Demo
SimVision Color Legend for iRoom Demo
Direct Work Hidden Work
3D Legend Diagram
Virtual Design and Construction Case Study
• Case Overview Baseline• Delay• Acceleration• Summary and Analysis
Baseline Case
• Target 2002 Thanksgiving and Christmas season• Tight site -> single crew per trade• Low coordination risk, but little slack
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)
Virtual Design and Construction Case Study
• Case Overview Baseline• Delay• Acceleration• Summary and Analysis
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
4D Demo (Plan View)
4D Demo (Perspective View)
MSP and Time-Controller Demo
Virtual Design and Construction Case Study
• Case Overview Baseline• Delay• Acceleration• Summary and Analysis
SimVision Demo(highlights activity received from
MSP)
MSP sends activity to SimVision
Virtual Design and Construction Case Study
• Case Overview Baseline• Delay• Acceleration• Summary and Analysis
Micro View
Macro View—Organization and Process
Virtual Design and Construction Case Study
• Case Overview Baseline• Delay• Acceleration• Summary and Analysis
Predicted Critical Path
Predicted Work Composition
Schedule Growth Risk
Predicted Work Composition
Virtual Design and Construction Case Study
• Case Overview• Baseline Delay• Acceleration• Summary and Analysis
Delay Case
• Hazardous materials found during excavation 2-month delay (MSP #56)
4D Demo (Baseline Case)
4D Demo (Delay Case)
MSP+Time Controller Demo(Delay Case)
Virtual Design and Construction Case Study
• Case Overview• Baseline Delay• Acceleration• Summary and Analysis
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
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)
Virtual Design and Construction Case Study
• Case Overview• Baseline• Delay Acceleration• Summary and Analysis
How to accelerate construction?
Virtual Design and Construction Case Study
• Case Overview• Baseline• Delay Acceleration• Summary and Analysis
4D DemoOpportunities for Acceleration
MSP DemoOpportunities for Acceleration
Virtual Design and Construction Case Study
• Case Overview• Baseline• Delay Acceleration• Summary and Analysis
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
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
4D Demo(Hybrid Acceleration)
MSP Demo(Hybrid Acceleration)
Virtual Design and Construction Case Study
• Case Overview• Baseline• Delay Acceleration• Summary and Analysis
Predicted Critical Path
Predicted Work Composition
Position Backlog
Resource Allocation
Virtual Design and Construction Case Study
• Case Overview• Baseline• Delay Acceleration• Summary and Analysis
Comparison of Predicted Finish Dates
Comparison of Predicted Work Composition
Hybrid Acceleration
Delay Case
Hybrid Acceleration
Delay Case
Comparison of Predicted Work Breakdown
Hybrid Acceleration
Delay Case
Virtual Design and Construction Case Study
• Case Overview• Baseline• Delay• Acceleration Summary and Analysis
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
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
Virtual Design and Construction Case Study
• Case Overview• Baseline• Delay• Acceleration Summary and Analysis
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
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
Virtual Design and Construction Case Study
• Case Overview• Baseline• Delay• Acceleration Summary and Analysis
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
Acceleration Cost
0
10
20
30
40
50
60
$102,000 $341,312 $422,279 $580,093
Additional Cost
Re
co
ve
red
Da
ys
Hybrid
Steel
Concrete
Delay
Virtual Design and Construction Case Study
• Case Overview• Baseline• Delay• Acceleration Summary and Analysis
ProductNo change(4D Model)
Acceleration is possible(MS Project)Acceleration costs money(Excel)
Coordination needs increase as schedule accelerates(SimVision)
Organization
Process
VDC(iRoom)
Summary of alternative analyses
The Macro Problem
Virtual Design and Construction Case Study
• Case Overview• Baseline• Delay• Acceleration Summary and Analysis
to be the world’s premier academic research center for Virtual Design and Construction
• Virtual Design and Construction: develop and test new ways to model, visualize, analyze and evaluate the multi-disciplinary performance of design–construction projects to support explicit business objectives
• Education: increase awareness of the value and costs of strategic IT for practitioners and Stanford students
CIFE Mission
• Need: macro and micro problems require timely stakeholder involvement
• Tools available, effective, affordable– iRoom, 4D, organization, TEI, …
• Objectives and metrics exist– Management theory– Manufacturing
• Actions: 1. Plan your VDC implementation strategy2. Become CIFE member; plan pilot
RateBaseline
($K) ChangeYear-1
(K$)Revenue 100,000 2% 102,000Cost of contracted work 85% 85,000 -2.0% 84,660Cost of self-performed work 10% 10,000 2.0% 12,240Gross Margin 5,000 5,100Sales, G&A 2% 2,000 2,040IT investment 70Amortized costs of IT/yr 33% 23Net income 3,000 3,037Time to payback (years) 1.9Net Income change (%) 1.2
Call to Action for VDC
Virtual Design and Construction Case Study
• Case Overview• Baseline• Delay• Acceleration Summary and Analysis
• Build project model early, before committing large money or time
• What– Product, process, organization
• How: – Detailed: to show the product, process, organization
entities that use significant project time, money– Virtual: in the computer– Visual: multi-discipline, multi-view, for multiple
stakeholders– Objective-based: set and track explicit public objectives
VDC Big Ideas
• Need: macro and micro problems require timely stakeholder involvement
• Tools available, effective, affordable– iRoom, 4D, organization, TEI, …
• Objectives and metrics exist– Management theory– Manufacturing
• Actions: 1. Plan your VDC implementation strategy2. Become CIFE member; plan pilot
RateBaseline
($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
The End
The End
The End
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