Precast Concrete Pavement Technology (2012) / Chapter Skim
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Pages 143-149
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From page 143... ...
143 C h a p t e r 1 6 Introduction Although PCP technology, as used today, is of recent origin, many different PCP systems have been implemented in the United States, and it is likely that refinements to the existing systems will continue to be made and new systems or system components will be developed. It is therefore necessary that highway agencies establish an independent process for evaluating and approving new PCP systems or components.
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144 pCp System Standard Drawings and Supplemental Information The vendor-developed drawings for the PCP system approval should be stamped by a registered professional engineer and should include, as a minimum, a cover sheet, a drawing sheet (or sheets, as needed) , and a PCP system installation detail sheet (or sheets, as needed)
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145 c. Reinforcement amount: bar size and spacing; and d.
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146 • Placed using setting bolts • Placed using polyurethane grout; d. Panel alignment requirements • Panel alignment within repair area • Vertical alignment with respect to existing concrete pavement; e.
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147 The trial installation of the PCP system provides an opportunity for the agency to identify potential problem areas and to require adjustments to be made before system approval or use of the system on a production project. The trial installation should be closely observed by representatives of the agency and the PCP system vendor.
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148 However, the overall response of the PCP system depends on the support system (subgrade, subbase, base, and bedding if used) , and the support system is not an item of evaluation in the PCP system approval process.
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149 Approval of a PCP System by Comity A highway agency may approve a PCP system without requiring a trial installation if the system has been approved for use by another agency within the past 12 months and the approval is based on the system described by the submitted standard drawings. Summary PCP technology is of recent origin, and it is likely that refinements to the existing systems will continue to be made and new systems or system components will be developed.
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