TRB’s National Cooperative Highway Research Program (NCHRP) has issued a request for proposals to perform in-soil testing of corrugated pipe produced with recycled high-density polyethylene based on the criteria and specification limits established by NCHRP Project 4-32: Performance and Quality Control of Corrugated Pipe Manufactured with Recycled Polyethylene Content. Proposals are due January 14, 2013.
RFP: Field Performance of Corrugated Pipe Manufactured with Recycled Polyethylene Content
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