SHRP 2 R-07 Performance Specifications for Rapid Renewal Sid Scott, R-07 Principal Investigator AASHTO Subcommittee for Construction August 18, 2010, Burlington, VT
Briefing Overview Introduction to R-07 Objectives/Definitions/Timeline Progress to Date Deliverables How Will Tools/Products Be Used? Status at End of Research
R-07 Objectives Reduce completion time while maintaining or improve quality and service life (Rapid Renewal) To encourage innovation, reduce mandatory method requirements and define end products Develop different specifications that can be used effectively in various contracting scenarios Develop recommendations on the transition to the use of these specifications (implementation plan) including selection criteria and guidance Quantify relative shared risk and develop strategies to manage risk
Defining Performance Specs • TRB E-C074 • Specifications that describe how the finished product should perform over time. • DOD • A performance specification states requirements in terms of the required results with criteria for verifying compliance, but without stating the methods for achieving the required results. • SHRP 2 R-07 [PS Strategic Roadmap 2004] • In the broadest terms, a performance specification defines the performance characteristics of the final product and links them to construction, materials, and other items under the contractor control.
Trauner Consulting Services TDC Partners Michael Baker, Jr. The Transtec Group, Inc. Virginia Transportation Research Council Heritage Group David White Iowa State University Stu Anderson & Ivan Damnjanovic TTI Keith Molenaar University of Colorado Mike Loulakis A/E/C Training Technologies Bill Roberds Golder Associates Team
R-07 Timeline 2007 2008 2009 2010 2011 2012 Phase 1 Phase 2 Phase 3 Phase 4 Phase 1 Status (Literature Review) and Risk Phase 1 Report Phase 2 Research Plan Phase 2 Measurement Strategy & Selection Tool Phase 2 Report Revised Phase 3 Work Plan Phase 3 Specifications & Guidance Phase 3 Report Draft PS Implementation Guidance Phase 4 Validation (Demo Projects) Final Report Demonstration projects Final guide specs
Progress to DateActual or Potential Value (Performance Specifying v Method Specifying)
Progress to DateQuantitative Measurement Strategy Ride, friction, noise, rutting, cracking METHOD ~ PERFORMANCE USER (Tier I) Comfort, accessibility, safety, travel time FUNCTIONAL (Tier II) AS-CONSTRUCTED (Tier III) Density, air, thickness, strength, modulus, geometry CONSTRUCTION (Tier IV) Transport, placing, curing, sawing MIXING REQUIREMENTS (Tier V) Charging, mixing, handling COMBINED MATERIALS (Tier VI) Mix methods, mix components BASIC MATERIALS (Tier VII) Aggregate, binder • Performance Parameters and Desired Level of Performance
Progress to DateQuantitative Measurement Strategy • Measuring & monitoring compliance • Test or inspection method • Sampling interval/evaluation section length • Frequency of measurement • Incentive strategies and payment mechanisms • Payment over time • Incentive/disincentives • Penalty point system • Identify potential gaps
Design-Bid-Build Design-Build Design Const Maintenance Design Const Maintenance Contractor Risk Zone Contractor Risk Zone Anticipated Maintenance DBB/DB with Warranty Design-Build-Maintain Design Const Maintenance Design Const Maintenance Contractor Risk Zone Contractor Risk Zone Progress to DateQuantitative Measurement Strategy Contract delivery approach & risk allocation
Progress to DateIdentify States for Demonstration Projects • Questionnaire distributed to solicit interest • 10 responses received • Follow-up conducted with 9 agencies: • Caltrans Florida • Pennsylvania Wisconsin • Missouri Louisiana • Virginia Delaware • Utah
Progress to DateDemonstration Projects • Geotechnical • Missouri • Project: • 2-mile D-B-B improvement project on Route 141 near St. Louis • Pavement foundation (sub-base/base) • Objectives: • Demonstrate use of NDT Mechanistic QA/QC testing technologies & IC measurements for improved test frequency and process control. • Calibrate IC values to QA point measurements to establish target values. • Data collection and future development of performance specifications based on IC values and statistical acceptance criteria.
Progress to DateDemonstration Projects • Pavement/Bridge Decks • Louisiana • Full pavement section (soil subgrade and HMA) • Mechanistic QA/QC testing technologies & IC measurements for full pavement section • Virginia • Bridge deck replacement projects • Route 208 Bridge over Lake Anna on the Spotsylvania-Louisa County Line
Progress to DateDemonstration Projects • Work Zone Traffic Control • Performance-based work zone traffic control for proposed UDOT Project • PCC Pavement (shadow) • DelDOT Rt. 301 – DB w/ PCC performance specification
Progress to DateSelection of Performance Specifications • Screening Considerations • Is enhanced performance a project goal? • Reduced life-cycle cost , accelerated delivery, or minimizing user impacts • Are there multiple approaches to achieve a desired result and can flexibility be extended to the contractor? • Where is the project in the development process? • Conceptual vs. final design stage • Restrictions to use of alternative delivery? • Can the contractor assume greater risk/responsibility for performance? • Other organizational or policy constraints? • Advantage to private sector asset management or equity investment?
Progress to DateSelection of Performance Specifications • Additional Considerations • Key characteristics of product performance can be measured and tested • Test methods are reliable, practical, & economical in a rapid renewal environment • Incentives can be used to enhance performance
Progress to DateDevelop Specification Language and Guidance • What is required performance? (parameters & levels) • How will agency evaluate & monitor? • What incentives and payment mechanisms should be used? • Construction • PWL • Project or Quality Index (KPIs) • O&M • Periodic payments with I/D (bonus/penalty) point/indexing systems
Research Deliverables • Selection Guidance • Performance v. method • Risk assessment • Contracting type • Performance Parameters/measures • Implementation Guidance • Roles and responsibilities • Measurement, testing • Verification & acceptance • Payment strategies
How Will Products Be Used? • Guide Performance Specifications (hardcopy) • Indexed Electronic Files available on CD • Specifications • Commentary • Companion Guidelines • Guidance and Commentary to assist users in adapting guide specifications to project and/or agency requirements
Status at End of Research Program • Adapting specification products on demonstrations is feasible • State DOTS are currently implementing research products for demonstrations • Performance provision development for demonstrations are underway • MoDOT geotechnical performance specification • VDOT PCC Bridge Deck performance specifications
Long-term Implementation Additional Pilot or Demonstration Projects to demonstrate benefits Development of std. test methods and acceptance criteria for NDT that more directly relate to performance (e.g. mechanistic-based properties) Long-term pilot performance evaluations (warranty and maintenance parameters) Publication of performance evaluations for pilot projects (either existing or future projects) Joint DOT/Industry outreach On-line tools to assist Construction Engineers & Specifiers
On-line Tool to Develop Performance Specifications for Rapid Renewal Projects
SHRP 2 R-07 Performance Specifications for Rapid Renewal Panel Briefing 4-8-10 Sid Scott, R-07 Principal Investigator