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1. Deformation of the structure just prior to collapse 100
2. Hypothesized sequence of collapse 101
3. Comparison with witness testimony 110
E. Status of Bridge Design Practice in 1926 114
1. Factors of safety 114
2. Special considerations for long span bridges 117
3. Treatment of stress concentration problems 119
V. CONCLUSIONS 121
A. With Respect to Sequence of Events in the Collapse of the Point Pleasant Bridge 121
B. With Respect to the Elements which Contributed to the Failure 122
C. With Respect to the Implications for the Safety of Other Bridges 123
D. With Respect to Bridge Inspection and Maintenance 124
VI. CAUSE 126
VII. RECOMMENDATIONS 127
VIII. REFERENCES 129
IX. TABLES 1-7, INCLUSIVE 133
X. APPENDICES After 142
Appendix A. Excerpts from report of E. G. Wiles on reassembly site work, specimen identification, and fracture catalog A1-17
Appendix B. Laboratory data on properties of eyebar steel at A7-2, steel from Point Pleasant Bridge B1-34
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