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

National Transportation Safety Board · 1970-12-16 · 202 pages · text by OCR, confidence 99%

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- B22 - APPENDIX B U. S. STEEL LABORATORY DATA --- Tensile Properties (60) Segment 85-1) Specimen No. 2) Strain Rate to Yield Yield Strength at 0.2% Offset, ksi Tensile Strength, ksi Elongation in 1 Inch, % Reduction of Area, % Layer A 6) 6 Normal 5) 87.5 119.8 18.0 54.4 Layer B 6) 14 " 83.5 118.3 18.0 54.4 Layer A 36 " 86.5 121.8 18.0 52.8 Center 44 " 83.5 119.8 18.5 55.5 Layer B 2 Static 68.5 120.3 18.0 52.4 10 " 63.5 118.8 19.0 55.0 17 " 71.6 119.3 19.0 47.8 21 " -- 118.8 19.0 49.0 25 " 69.6 118.7 19.0 49.6 29 " 74.1 117.8 19.0 54.4 32 " 86.7 122.7 18.0 50.8 40 " 83.7 120.2 20.0 54.5 6) Layers A and B are adjacent to opposite surfaces, and 0.05 inch was removed to dress up surfaces. --- *Note: The document appears to be a scanned page with some text rotated 90 degrees clockwise on the left margin. The rotated text reads:* > *U.S. Steel Laboratory Data* > *Appendix B* > *Page B22* > *Tensile Properties (60)* > *Segment 85-1)* > *Specimen No. 2)* > *Strain Rate to Yield* > *Yield Strength at 0.2% Offset, ksi* > *Tensile Strength, ksi* > *Elongation in 1 Inch, %* > *Reduction of Area, %* > *Layer A 6)* > *Layer B 6)* > *Layer A* > *Center* > *Layer B* > *6) Layers A and B are adjacent to opposite surfaces, and 0.05 inch was removed to dress up surfaces.* *The main table is presented in the standard orientation above. The rotated text is a duplicate of the table headers and some row labels, likely due to scanning or printing orientation.*

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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 (mean confidence 99%); expect the odd misread word. 202 pages are in the text index: search them above, or from the library's search.