Guide for Pavement-Type Selection (2011) / Chapter Skim
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Pages 30-38
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The contractor is obligated to provide the product and services specified in the contract provisions with certain technical, cost, time, and quality requirements. As the selection process proceeds from the preliminary engineering phase to the selection of the final pavement type, three distinct milestones are recognized in this process: • Advertising for bids -- The agency's internal assessments and decisions culminate with the development of contract provisions.
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4It may be difficult to develop consensus on calculating differential costs during normal traffic operations between pavement types. N/A = Not applicable Table 10.
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The agency should establish criteria for evaluating contractorproposed pavement types and communicate them in the RFP or bid documents. Input from the pavement-type selection committee may be helpful in establishing contract provisions and evaluation criteria pertinent to pavements.
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Agency decides on contractorbased pavement-type selection Agency determines the contracting type Contractor reviews contract provisions and agency practices Contractor performs risk assessment and develops risk management strategies Agency performs an impact assessment of pavementrelated risks Agency develops strategies for risk management, allocation and sharing Agency develops contract provisions and specifications Contractor follows the selection process of a given contracting type Contractor develops inputs for the type selection process NO YES Does contractorselected alternative meet contract provisions? Contractor selects an alternative for the proposal Agency evaluates contractor's proposal Agency rejects or proposes modifications to contractorselected alternative Agency accepts contractorselected alternative Advertising for Bids Submission of Bids Acceptance of Contractor's Proposal Agency Process Agency Process Contractor Process Contractor Process
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Factors suggested for risk analysis. Design-Build Design-Build with O&M Performance Warranty • Initial costs • Supplementary costs • Work zone costs • Noneconomic factors • Agency's pool of alternatives • Performance criteria • Service life of initial pavement • Service life of structural rehabilitation • Type and timing of maintenance and functional rehabilitation • Initial costs • Commodity price inflation • Supplementary costs • Future maintenance costs • Future costs for rehabilitation • Future operational costs • Work zone costs • Noneconomic factors • Inflation, discount factors, and macroeconomic risks • Projected traffic volume • Projected revenue • Agency's pool of alternatives • Performance criteria • Service life of initial pavement • Service life of structural rehabilitation • Type and timing of maintenance and functional rehabilitation • Initial costs • Commodity price inflation • Supplementary costs • Future maintenance costs • Future costs for rehabilitation • Future operational costs • Work zone costs • Noneconomic factors • Inflation, discount factors, and macroeconomic risks • Projected traffic volume • Additional costs for warranty requirements (for surety bonds as in additional bid price, $/sq.
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• Agency-preferred. The agency specifies the preferred pavement types as well as any pavement types that are not allowed.
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Reviewing contract provisions to identify potential risks (see Figure 17 for Steps 1 through 4)
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Comparison of pavement warranty types. Agency decides on design-build project with operations and maintenance Contractor reviews agency practices, contract provisions and performance criteria Contractor performs risk assessment Contractor develops pavement life-cycle strategies for agency-specified performance criteria Contractor performs LCCA and evaluation using economic and noneconomic factors Contractor-based selection of the most-preferred alternative Aspect Materials & Workmanship Short-Term Performance Long-Term Performance Typical period 2–4 years 5–10 years 10–20 years Type of specifications Agency's current standard specifications for specific treatment Agency-specified minimum materials and construction requirements acceptable for project Agency-specified minimum structural design, material design, materials, and construction requirements acceptable for project Agency responsibility Structural design, material design, evaluation Structural design, evaluation Evaluation Contractor responsibility Correct defects in pavement caused by elements within their control Material design, quality control, and pavement performance for warranty period Structural design, material design, quality control, and pavement performance for warranty period Acceptance of project In accordance with agency's normal practices Initial: construction activities Initial: construction activities Final: after specified warranty period is completed Final: after specified warranty period is completed
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Agency-based pavement-type selection Contractor reviews agency practices and performance criteria Contractor performs risk assessment Options for performance warranty projects Contractor reviews agency practices and performance criteria Contractor performs risk assessment Contractor develops pavement life cycle strategies for agency -specified performance criteria Contractor performs LCCA and evaluation using economic and noneconomic factors Contractor-based selection of most-preferred alternative Figure 21. Pavement-type selection for performance warranty projects.
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