Patent ID: 6830407
Filing Date: 2004-12-14
Classification: E01F

Abstract:
A guardrail beam for installation along a roadway, comprising:a first edge; a second edge; a plurality of crowns disposed longitudinally along the guardrail beam between the first edge and the second edge; a first fold disposed longitudinally along the first edge; a second fold disposed longitudinally along the second edge; an upstream end; a downstream end spaced longitudinally from the upstream end; an intermediate portion disposed between the upstream end and the downstream end, wherein the first and second folds form generally tubular first and second curls within the upstream and intermediate portion; the first curl and the second curl each having an elliptical cross section wherein the minor axis is at least twenty percent of the major axis and an outer diameter with a value between approximately 0.375 inches and 2.5 inches; and the first and second folds forming respective first and second modified fold portions at the downstream end.