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

- B20 - APPENDIX B U. S. STEEL LABORATORY DATA Point Piccard Bridge US Steel Results February 11, 1969 Revised: February 26, 1969 Composition (C9 and C0) C9 is C9 head of C9-C11 NN C0 is C11 head of C11-C13NN(330) C Mn P S Si Cu Ni Cr Mo N C9 0.62 0.72 0.022 0.030 0.19 0.038 0.008 0.014 0.007 0.004 C0 0.61 0.66 0.023 0.035 0.15 0.015 0.010 0.014 0.008 0.005