Documents / Document
This is the final highway accident report (NTSB-HAR-71-1) from the National Transportation Safety Board, adopted in December 1970. It covers the collapse of the U.S. 35 bridge between Point Pleasant, West Virginia, and Kanauga, Ohio, on December 15, 1967, which killed 46 people. The Board found that the cause was a cleavage fracture in eyebar 330 at joint C13N. That fracture grew from a flaw produced over 40 years by stress corrosion and corrosion fatigue, in a spot that could not be seen or found by inspection.
“Masters”10 pages
TABLE 7 Eyebar Position Area Live Load Tension Live Load Compression Range of Load Maximum Range of Unit Stress psi Nominal Edge of Hole Concentration U0U1 43.5 541 541 12,450 34,500 U1U3 48.0 753 -312 1065 22,200 61,500 U3U5 51.0 857 -346 1203 23,600 65,500 U5U7 51.0 848 -423 1271 25,000 69,200 U7U9 45.0 562 562 12,500 34,800 C9C11 46.5 571 571 12,300 34,000 C11C13 46.5 582 582 12,500 34,800 C13C15 48.0 592 594 12,400 34,400
Document, cited by the archive. The PDF is mirrored here; the original link is under it. The text was read from the page images by an OCR model; expect the odd misread word. 202 pages are in the text index: search them above, or from the library's search.