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Figure 29. Decreasing the moisture content by 6 percent increases the post-peak force by 80 percent. Graph and Diagram.

Diagram. This diagram shows two columns standing side by side. The column on the left-hand side is broken down into three separate colors and depicts 3MC Levels. The top quarter of the column is colored a dark purple and is labeled 18.5 percent while the top middle quarter of the column is colored a dull pink and is labeled 20.0 percent. The remaining bottom quarters of the column are colored a dark red and are labeled 23.0 percent. The column on the right hand side is broken down into four colors and depicts 5 MC Levels. The top quarter of the column is colored a dark purple and is labeled 18.5 percent while the top middle quarter of the column is colored a dull pink and is labeled 20.0 percent and 21.0 percent. Separating the latter quarter and the upcoming quarter is a thin orange line labeled 22.0 percent. The remaining bottom quarters of the column are colored a light green and are labeled 23.0 percent.

Graph. This graph shows four distinct lines. The first line is solid red and is labeled 17 percent MC. The second line is solid blue and is labeled 3 MC Levels while the third line is solid green and is labeled 5 MC Levels. Finally, the fourth line is solid black and is labeled 23 percent MC (Saturated). The vertical axis of this graph ranges from 0 to 120 and represents Force (kilonewtons) while the horizontal axis of this graph ranges from 0 to 80 and represents deflection (millimeters). All four lines begin at the points of zero on both the vertical and horizontal axes. The solid red line slopes upward to the points of 106 on the vertical axis and 74 on the horizontal axis where it peaks and then steeply drops off and leaves the graph at the points of 24 on the vertical axis and 80 on the horizontal axis. The solid blue line slopes upward to the points of 76 on the vertical axis and 56 on the horizontal axis where it steeply drops off to the pints of 4 on the vertical axis and 62 on the horizontal axis. From there the blue line spikes back up to the points of 20 on the vertical axis and 68 on the horizontal axis where it gradually slopes off the graph at the points of 24 on the vertical axis and 80 on the horizontal axis. The green line slopes upward to the points of 66 on the vertical axis and 58 on the horizontal axis where it steeply drops off to the points of 16 on the vertical axis and 64 on the horizontal axis. From there the green line sporadically runs off the graph at the points of 18 on the vertical axis and 80 on the horizontal axis. The black line slopes up to the points of 64 on the vertical axis and 60 on the horizontal axis where it steeply drops off to the points of 26 on the vertical axis and 66 on the horizontal axis. From there the black line spikes again to the points of 40 on the vertical axis and 76 on the horizontal axis where it then drops off again and runs off the graph at the points of 30 on the vertical axis and 80 on the horizontal axis.

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