Figure 5. These comparisons of the model with test data were used to set the hardening behavior of the southern yellow pine model in parallel-to-the-grain compression. Graphs A and B.

1. Select Structural. This graph shows two distinct lines, one solid black, depicting Clear Wood Calculation and one broken black line depicting SEL STR Calculation. Both lines stand out against a background of other colored lines, mostly red, some green, some blue, sprawled sporadically behind the two black lines nearly covering the entire canvas behind the distinct two lines. The vertical axis of this graph ranges from 0 to 1,000 and represents Load (kilonewtons) while the horizontal axis ranges from 0 to 15 and represents Deflection (millimeters). The solid black line rises in a high arch across the graph from the points of zero vertical and horizontal axes until it plateaus for a measure at the points of 1,000 on the vertical axis and 13 on the horiztonal axis. The broken black line rises gradually from the points of zero on both the vertical and horizontal axes and peaks at the points of 500 on the vertical axis and 6.5 on the horizontal axis where it plateaus and finally stop at the points of 500 on the vertical axis and 10 on the horizontal axis.

2. Grade 2. This graph shows two distinct lines, one solid black, depicting Clear Wood Calculation and one broken black line depicting SEL STR Calculation. Both lines stand out against a background of other colored lines, mostly red, some green, some blue, sprawled sporadically behind the two black lines nearly covering the entire canvas behind the distinct two lines. The vertical axis of this graph ranges from 0 to 1,000 and represents Load (kilonewtons) while the horizontal axis ranges from 0 to 15 and represents Deflection (millimeters). The solid black line rises in a high arch across the graph from the points of zero vertical and horizontal axes until it plateaus for a measure at the points of 1,000 on the vertical axis and 13 on the horiztonal axis. The broken black line rises gradually from the points of zero on both the vertical and horizontal axes and peaks at the points of 440 on the vertical axis and 6 on the horizontal axis where it plateaus and finally stops at the points of 440 on the vertical axis and 10 on the horizontal axis.

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FHWA-HRT-05-096