The Madison Group Info@madisongroup.com madisoongroup.com What Went Wrong? A plastic rain barrel was cracking at the bottom of a stiffening rib after approximately two weeks in service, which resulted in leakage of water. The rain barrel was injection molded from a high-density polyethylene material. The Madison Group 2615 Research Park Drive Madison WI, 53711 USA Ph: (608) 231-1907 madisongroup.com Evaluation A visual examination of the failure revealed a smooth fracture surface that initiated at the base of the rib. The fracture surface was characteristic of a brittle fracture mechanism known as creep. Creep is a material response mechanism, commonly

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