ACPA Staff and Members attended the Annual Subcommittee on Materials dinner in Phoenix AZ on August 8. ACPA was the sponsor of the event.

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.