Collapse of U.S. 35 Highway Bridge, Point Pleasant, West Virginia, December 15, 1967 (HAR-71/01)

- 137 - TABLE 4 Fracture Toughness of A7-24 Steel, Point Pleasant Bridge As Measured by Charpy Tests Laboratory Source of Sample 15 foot pound Transition Temperature, °F. U. S. Steel 1/2 inch Plate, Chain Bent Post, Longitudinal 55 National Bureau of Standards 5/8 inch Web, Chain Bent Post, Longitudinal; 3/4 inch Gusset, U7N Longitudinal Transverse 74 80 92 Battelle Memorial Institute 1/2 inch Plate, Chain Bent Post, Longitudinal 36