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Consultant recommends polypropylene corrugated pipe for Town Center Plaza storm system
Summary
A CEC consultant told the council a polypropylene corrugated storm-pipe alternative would reduce joints and lower construction labor and mobilization costs, estimating about a 15% savings in storm infrastructure and recommending ODOT-class B rock backfill and specific cover depths.
At the meeting, civil engineering consultant John McGraw (CEC) outlined a proposed change to storm-sewer materials for the Town Center Plaza project, recommending polypropylene corrugated pipe as a durable, lighter-weight alternative to reinforced concrete pipe.
McGraw said polypropylene pipe is not high-density polyethylene (HDPE) used for sanitary sewers; rather, the product…
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