Patent ID: 9062418
Filing Date: 2015-06-23
Classification: B23P,B61B,E01B,E04C,Y10T

Abstract:
1. A method of forming an elevated rail segment, comprising: forming a rectangular main panel having two long edges and two short edges and a first fold line bisecting the main panel along a lengthwise centerline between and parallel to the two long edges, the main panel further including second and third fold lines each disposed parallel to and a predetermined distance from each of the two long edges; bending the main panel generally along the first fold line to form an inside angle of about 60° to form a V-shaped cross-section; bending the main panel generally along the second fold line to form a first lip having an inside angle of about 60°, the first lip extending toward the third fold line and partially enclosing space inside the V-shaped cross-section; bending the main panel generally along the third fold line to form a second lip having an inside angle of about 60°, the second lip extending from the third fold line toward and generally parallel to the first lip and further partially enclosing the space inside the V-shaped cross-section; forming an elongated rectangular base panel; and connecting the elongated rectangular base panel to the first and second lips of the rectangular main panel to form a closed hollow triangular prism-shaped structural member.