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

- 140 - TABLE 6 CONTINUED Laboratory/Specimen Source Yield Strength 0.2% Offset ksi. Tensile Strength ksi. Elongation, % 1" Reduction Area, % Battelle Memorial Laboratory (Control tests of material used for sustained load experiments on material from surface layers, eyebar No. 330) 87.5 110.4 20 Bureau of Public Roads (Control tests of material used for fatigue experiments, specimens extend through thickness) 79.0 116.0 21 *Estimate for bar computed as weighted average of one inner layer and two outer layers.