Figure 19. Pinning a truss to the bolt to simulate the vertical force applied by the pulley system, increases the peak force by about 4 percent. Graph and Diagram.

Graph. (a) Load-deflection comparisons.

This graph shows two distinct lines. The first line is solid blue and is labeled Without Truss while the second line is colored red and is labeled With Truss. The vertical axis of this graph ranges from zero to 100 and represents Force in kilonewtons while the horizontal axis of this graph ranges from zero to 200 and represents Deflection in millimeters. Both lines begin at the point of zero on both the vertical and horizontal axes. The first line, the blue line, rises to the point of 65 on the vertical axis and 70 on the horizontal axis where it then drops to the point of 38 on the vertical axis and 110 on the horizontal axis. The blue then continues to descend unevenly until it comes to a stop at the points of 20 on the vertical axis and 190 on the horizontal axis. The second line, the red line, rises to the point of 65 on the vertical axis and 70 on the horizontal axis where it then drops to the point of 40 on the vertical axis and 110 on the horizontal axis. The blue then continues to descend unevenly until it leaves the graph at the points of 24 on the vertical axis and 200 on the horizontal axis.

Diagram (b) rigid wall mesh with truss.

This figure shows a computer-generated illustration of a post, colored red with a small section near the top colored purple. An eyehook is shown protruding from the left-hand side of the post. The top half of the post leans to the left at a rough fifteen-degree angle. A small gap is shown forming near the lower half of the post.

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FHWA-HRT-05-096