AASHTO-FHWA Technology Endorsement Construction …sp.construction.transportation.org/Documents/LeeCA4PRS.pdf · 0 12 2436 4860 72hour progress (km) Less ... II-15 Devore PCC Reconstruction

Construction Analysis for Pavement Rehabilitation Strategies

for AASHTO Subcommittee on Construction

Aug 5, 2009

Dr. E.B. Lee

University of California at BerkeleyInstitute of Transportation Studies

AASHTO-FHWA Technology Endorsement

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CA4PRS, Tool for Highway RenewalCA4PRS, Tool for Highway RenewalCA4PRS, Tool for Highway Renewal

• Highways Renewal for Sustainability– State & Interstates highways reached their design life– DOTs shift their focus to highway sustainability (4-R)

• Work-zone Impacts and Mitigation– Adverse Impact: Mobility (12%) and Safety (40,000)– FHWA 2008 Regulation: WZ Assessment and TMP

• CA4PRS Software: WZ Evaluation Tool– Pooled-fund (CA, FL, MN, TX, WA): UC Berkeley 2003– AASHTO Promotion (CAST: WZ Traffic Tools)– FHWA Outreach

• 2009 Market-ready Innovation and Technology Product• Arranged Group-License (Free) for all 50 State DOTs• User Trainings: 1,000 Engineers in 20 states

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CA4PRS Nation-wide Promotion (FHWA-AASHTO)CA4PRS NationCA4PRS Nation--wide Promotion (FHWAwide Promotion (FHWA--AASHTO)AASHTO)

Hands-on training workshops1,000 engineers: Caltrans + 20 DOTs

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CA4PRS Alternatives Comparison ProcessCA4PRS Alternatives Comparison ProcessCA4PRS Alternatives Comparison Process

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CA4PRS Alternatives (What-if) ComparisonCA4PRSCA4PRS Alternatives (WhatAlternatives (What--if) Comparisonif) Comparison• Pavement Type => Loner-life Design

– JPCP, CRCP, Slab- or lane-replacement– Overlay (CSOL), Milling-filling AC, Full-depth AC – Cross-section, Thickness, Mix, Base type

• Work-zone Traffic => Minimum Delay– Construction window: Night-time, Day, Weekend, Continuous– Closure hour sensitivity

• 7-h, 8-h, 9-h closures: Schedule –Traffic - Cost– Lane closure schemes: Full vs Partial closures– WZ capacity, Demand reduction, Detours

• Contractor’s Logistics => Accelerated Construction– Site access and Construction sequence– Constructability (demo/mix): Resource constraints

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Concrete Pavement Cross-sectionsConcrete Pavement CrossConcrete Pavement Cross--sectionssections

(b) Concrete Slab Replacement

CONCRETE 205mm (8")

CTB 102mm (4")

AB 305mm (12")

SG

CONCRETE 305mm (12")

BASE 152mm (6")

AB 152mm (6")

SG

(c) Concrete Slab & Base Reconstruction(a) Milling Filling AC

ORExisting AC Pavement

51 mm

76 mm25 mm

0.5 hour

1 hour0.5 hour

Type C

Type CRAC-O

CA4PRS Compares Cross-section Change Alternatives from SCHEDULE-TRAFFIC-COST

Perspective, as the baseline of LCCA.

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Closure <=> Access <=> ProductionFull Closure for Concurrent MethodClosure <=> Access <=> ProductionClosure <=> Access <=> ProductionFull ClosureFull Closure for for Concurrent MethodConcurrent Method

Mobilization

Demolition Base PavingPCC Paving

Demobilization0.0

0.3

0.5

0.8

1.0

0 12 24 36 48 60 72 hour

prog

ress

(km)

More Closure=>

Better Access=>

Faster Schedule;

Higher Delay

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Closure <=> Access <=> ProductionPartial Closure for Sequential MethodClosure <=> Access <=> ProductionClosure <=> Access <=> ProductionPartial ClosurePartial Closure for for Sequential MethodSequential Method

Mobilization

Demolition Base Paving PCC Paving

Demobilization0.0

0.3

0.5

0.8

1.0

0 12 24 36 48 60 72 hour

prog

ress

(km)

Less Closure=>

Limited Access=>

Slower Schedule

Less Delay

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PCC Slab-Cracking & Excavation MethodPCC Slab Saw-cut & Lift Method

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HMA (AC) Constructability CheckHMA (AC) Constructability CheckHMA (AC) Constructability Check

(Aggregates: Granite)

(Aggregates: Limestone)

Milling Machine Production(Wirtzen W1900 Model)

AC Cooling-time Multi-cool Analysis

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I-15 Devore WZ Capacity: Full-closure Dynamic Lane Configuration Using QCMB

II--15 Devore WZ Capacity: Full15 Devore WZ Capacity: Full--closure closure Dynamic Lane Configuration Using QCMBDynamic Lane Configuration Using QCMB

QCMB Operation VideoQCMB Operation VideoQCMB Operation Video

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I-10 Pomona Concrete (4-h Mix) Project, 2000II--10 Pomona Concrete (410 Pomona Concrete (4--h Mix) Project, 2000h Mix) Project, 2000

1.5 mile PCC slabs Replaced: 55-h Weekend1 x Weekend closure = 40 x 7-h night closures

12 l-m Slab-replacement (Nighttime vs Weekend)

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I-710 Long Beach AC Rehabilitation Project, 2003II--710 Long Beach AC Rehabilitation Project, 2003710 Long Beach AC Rehabilitation Project, 2003

18 lane-mile of Long-life CSOL or FDAC8 x 55-h Weekend Closures (ADT = 120,000)

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I-15 Devore PCC Reconstruction ProjectII--15 Devore PCC Reconstruction Project15 Devore PCC Reconstruction Project

CA4PRS SoftwareDemonstration

• Two truck-lane PCC reconstruction– 3-4 lanes / direction, 120,000 ADT – 10 lane-mile (2.5 mile x 2 lanes x 2 dir) PCCP – 12” JPCP / 6” ACB, using 12-h mix RSC

• CA4PRS analysis: Design=>Construction– Schedule – Traffic – Cost Comparison– Nighttime Closures: 7-h, 8-h, 9-h closures– Extended Closures: 55-h weekend, 3-day weekday, 24/7

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I-15 Devore Daily Traffic Patterns- Approximately 120,000 ADT (10% trucks)- Weekdays Commuters + Weekend Leisure

II--15 Devore Daily Traffic Patterns15 Devore Daily Traffic Patterns-- Approximately 120,000 ADT (10% trucks)- Weekdays Commuters + Weekend Leisure

0

1,000

2,000

3,000

4,000

5,000

6,000

1 3 5 7 9 11 13 15 17 19 21 23Time of day

Veh

icle

s pe

r ho

ur

SB (Mon-Thu) SB (Sun)NB (Mon-Thu) NB (Fri)

Expected CWZ capacity

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II--15 Devore Pre15 Devore Pre--construction Analysis construction Analysis CA4PRS ScheduleCA4PRS Schedule--TrafficTraffic--Cost ComparisonCost Comparison

TotalClosures

ClosureHours

Max.Delay(Min)

Delay (RUC)Cost ($M)

AgencyCost ($M)

TotalCost ($M)

One RoadbedContinuous (24/7) 2 400 80 5.0 25.0 30.0

72-Hour WeekdayNon-stop 8 576 50 8.0 26.0 34.0

55-Hour WeekendExtended 16 880 80 14.0 27.0 41.0

9-Hour NighttimeClosures 230 2,100 50 7.0 31.0 38.0



ConstructionScenario

ConstructionSchedule

CostWZ Traffic Delay

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CA4PRS Implementation in Project Life Cycle & Enhancement

CA4PRS Implementation CA4PRS Implementation in Project Life Cycle & Enhancementin Project Life Cycle & Enhancement

• Planning Stage (PSR/PA&ED): Scope and Priority– VE Analysis and Life-cycle Cost Analysis

• Design Stage: PS&E & TMP packages– Working-days (CPM); Construction staging-plans – WZ Traffic: TMP and Lane-closure charts

• Construction Stage– Validate contractor’s work-plans and CCO

• Upcoming (Continuing) Enhancements– Current V2.1 (M & R): Schedule-Traffic-Cost– V2.5 Roadway Widening– V3.0 Pre-cast Rehabilitation– V3.5 Bridge Replacement

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More CA4PRS Information?More CA4PRS Information?More CA4PRS Information?• Contacts

– Dr. E.B. Lee: UC Berkeley-ITS• (510) 665-3637; [email protected]

– Keith M. Platte : AASHTO Materials and Product Evaluation• 202 624 7830; [email protected]

– Michael Samadian: Caltrans Research• (916) 324-2048; [email protected]

– Dr. Nadarajah Sivaneswaran (Siva): FHWA Turner-Fairbank • (202) 493-3147; [email protected]

– Ken Jacoby: FHWA Office of Asset Management• 202-366-6503; [email protected]

• GOOGLE “CA4PRS”http://www.dot.ca.gov/hq/research/roadway/ca4prs/index.htm

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ShoulderS

houlder

New

Shoulder

GP lanes

New

Express (toll) lane

GP lanes

CA4PRS => Life-Cycle Cost Analysis: I-15 HOT30 Analysis (10 construction x 3 criteria)

CA4PRS => LifeCA4PRS => Life--Cycle Cost Analysis: ICycle Cost Analysis: I--15 HOT15 HOT30 Analysis (10 construction x 3 criteria)30 Analysis (10 construction x 3 criteria)

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