Producer members of the American Concrete Pipe Association (ACPA) began retooling the concrete pipe industry in the mid to late 90s to accommodate market demand and the production of 21st century precast concrete pipe and boxes. What they did not foresee was a greater demand placed on concrete pipe producers in educating specifiers, design engineers, regulators, elected representatives, contractors, and the public about the applied science of buried rigid and flexible pipelines and culverts. Concrete pipe and precast box production facilities have evolved over a very short period to be both production facilities and education centers.

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This is a demonstration of the comparative flammability of polypropylene pipe (PP), reinforced concrete pipe (RCP), and high density polyethylene pipe (HDPE). Dry hay is ignited in three 18 in. by 18 in. pipes and allowed to burn. This is an unedited test conducted on October 21, 2015.