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Publication Number:  FHWA-HRT-14-067    Date:  September 2014
Publication Number: FHWA-HRT-14-067
Date: September 2014

 

Dynamic Properties of Stay Cables on The Penobscot Narrows Bridge

APPENDIX F. AERODYNAMIC DAMPING PLOTS

PHASE 1 AERODYNAMIC DAMPING PLOTS

Note that cables 14A and 13A did not have valid wind data recorded during their testing. In these plots, "Total" refers to wind data recorded over the entire test run, while "Decay Only" refers to wind data that is recorded only between the start and stop values of the time filter.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 20A. The x-axis is equivalent wind speed, ranging from 0 to 5 miles per hour, and the y-axis is damping ratio, ranging from 0 to 0.30 percent. The data ranges from 0 to 2 miles per hour, with damping ratios ranging from 0.20 to 0.30 percent. The best fit line cuts through the data and crosses through the y-axis around 0.24 percent. The correlation for the best fit line is R squared equals 0.0002.
1 mi/h = 1.61 km/h
Figure 78. Graph. Phase 1, damping ratio versus total equivalent wind speed for cable 20A.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 19A. The x-axis is equivalent wind speed, ranging from 0 to 5 miles per hour, and the y-axis is damping ratio, ranging from 0 to 0.25 percent. The data ranges from 0 to 2 miles per hour, with damping ratios ranging from 0.18 to 0.23 percent. The best fit line cuts through the data and crosses through the y-axis around 0.19 percent. The correlation for the best fit line is R squared equals 0.5177.
1 mi/h = 1.61 km/h
Figure 79. Graph. Phase 1, damping ratio versus total equivalent wind speed for cable 19A.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 18A. The x-axis is equivalent wind speed, ranging from 0 to 5 miles per hour, and the y-axis is damping ratio, ranging from 0 to 0.40 percent. The data ranges from 0 to 1.5 miles per hour, with damping ratios ranging from 0.24 to 0.37 percent. The best fit line cuts through the data and crosses through the y-axis around 0.28 percent. The correlation for the best fit line is R squared equals 0.0414.
1 mi/h = 1.61 km/h
Figure 80. Graph. Phase 1, damping ratio versus total equivalent wind speed for cable 18A.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 17A. The x-axis is equivalent wind speed, ranging from 0 to 5 miles per hour, and the y-axis is damping ratio, ranging from 0 to 0.20 percent. The data ranges from 0 to 0.7 miles per hour, with damping ratios ranging from 0.08 to 0.15 percent. The best fit line cuts through the data and crosses through the y-axis around 0.9 percent. The correlation for the best fit line is R squared equals 0.1326.
1 mi/h = 1.61 km/h
Figure 81. Graph. Phase 1, damping ratio versus total equivalent wind speed for cable 17A.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 16A. The x-axis is equivalent wind speed, ranging from 0 to 5 miles per hour, and the y-axis is damping ratio, ranging from 0 to 0.30 percent. The data ranges from 0 to 2.7 miles per hour, with damping ratios ranging from 0.2 to 0.28 percent. The best fit line cuts through the data and crosses through the y-axis around 0.22 percent. The correlation for the best fit line is R squared equals 0.0736.
1 mi/h = 1.61 km/h
Figure 82. Graph. Phase 1, damping ratio versus total equivalent wind speed for cable 16A.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 15A. The x-axis is equivalent wind speed, ranging from 0 to 5 miles per hour, and the y-axis is damping ratio, ranging from 0 to 0.25 percent. The data ranges from 0 to 2.4 miles per hour, with damping ratios ranging from 0.15 to 0.21 percent. The best fit line cuts through the data and crosses through the y-axis around 0.18 percent. The correlation for the best fit line is R squared equals 0.0214.
1 mi/h = 1.61 km/h
Figure 83. Graph. Phase 1, damping ratio versus total equivalent wind speed for cable 15A.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 12A. The x-axis is equivalent wind speed, ranging from 0 to 15 miles per hour, and the y-axis is damping ratio, ranging from 0 to 0.60 percent. The data ranges from 9 to 14 miles per hour, with damping ratios ranging from 0.20 to 0.50 percent. The best fit line cuts through the data and crosses through the y-axis around 0.02 percent. The correlation for the best fit line is R squared equals 0.4252.
1 mi/h = 1.61 km/h
Figure 84. Graph. Phase 1, damping ratio versus total equivalent wind speed for cable 12A.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 20C. The x-axis is equivalent wind speed, ranging from 0 to 15 miles per hour, and the y-axis is damping ratio, ranging from 0 to 0.20 percent. The data ranges from 4 to 11 miles per hour, with damping ratios ranging from 0.12 to 0.19 percent. The best fit line cuts through the data and crosses through the y-axis around 0.10 percent. The correlation for the best fit line is R squared equals 0.7519.
1 mi/h = 1.61 km/h
Figure 85. Graph. Phase 1, damping ratio versus total equivalent wind speed for cable 20C.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 19C. The x-axis is equivalent wind speed, ranging from 0 to 15 miles per hour, and the y-axis is damping ratio, ranging from 0 to 0.20 percent. The data ranges from 5 to 10 miles per hour, with damping ratios ranging from 0.12 to 0.15 percent. The best fit line cuts through the data and crosses through the y-axis around 0.08 percent. The correlation for the best fit line is R squared equals 0.8016.
1 mi/h = 1.61 km/h
Figure 86. Graph. Phase 1, damping ratio versus total equivalent wind speed for cable 19C.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 18C. The x-axis is equivalent wind speed, ranging from 0 to 10 miles per hour, and the y-axis is damping ratio, ranging from 0 to 0.20 percent. The data ranges from 4 to 6 miles per hour, with damping ratios ranging from 0.08 to 0.15 percent. The best fit line cuts through the data and crosses through the y-axis below zero percent. The correlation for the best fit line is R squared equals 0.83.
1 mi/h = 1.61 km/h
Figure 87. Graph. Phase 1, damping ratio versus total equivalent wind speed for cable 18C.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 17C. The x-axis is equivalent wind speed, ranging from 0 to 10 miles per hour, and the y-axis is damping ratio, ranging from 0 to 0.20 percent. The data ranges from 3 to 5 miles per hour, with damping ratios ranging from 0.13 to 0.14 percent. The best fit line cuts through the data and crosses through the y-axis around 0.15 percent. The correlation for the best fit line is R squared equals 0.4497.
1 mi/h = 1.61 km/h
Figure 88. Graph. Phase 1, damping ratio versus total equivalent wind speed for cable 17C.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 20A. The x-axis is equivalent wind speed, ranging from 0 to 5 miles per hour, and the y-axis is damping ratio, ranging from 0 to 0.30 percent. The data ranges from 0 to 1.2 miles per hour, with damping ratios ranging from 0.20 to 0.30 percent. The best fit line cuts through the data and crosses through the y-axis around 0.24 percent. The correlation for the best fit line is R squared equals 0.0006.
1 mi/h = 1.61 km/h
Figure 89. Graph. Phase 1, damping ratio versus decay-only equivalent wind speed for cable 20A.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 19A. The x-axis is equivalent wind speed, ranging from 0 to 10 miles per hour, and the y-axis is damping ratio, ranging from 0 to 0.25 percent. The data ranges from 0 to 2 miles per hour, with damping ratios ranging from 0.18 to 0.23 percent. The best fit line cuts through the data and crosses through the y-axis around 0.20 percent. The correlation for the best fit line is R squared equals 0.4082.
1 mi/h = 1.61 km/h
Figure 90. Graph. Phase 1, damping ratio versus decay-only equivalent wind speed for cable 19A.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 18A. The x-axis is equivalent wind speed, ranging from 0 to 5 miles per hour, and the y-axis is damping ratio, ranging from 0 to 0.40 percent. The data ranges from 0 to 1.2 miles per hour, with damping ratios ranging from 0.24 to 0.36 percent. The best fit line cuts through the data and crosses through the y-axis around 0.27 percent. The correlation for the best fit line is R squared equals 0.1621.
1 mi/h = 1.61 km/h
Figure 91. Graph. Phase 1, damping ratio versus decay-only equivalent wind speed for cable 18A.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 17A. The x-axis is equivalent wind speed, ranging from 0 to 5 miles per hour, and the y-axis is damping ratio, ranging from 0 to 0.20 percent. The data ranges from 0 to 0.8 miles per hour, with damping ratios ranging from 0.8 to 0.15 percent. The best fit line cuts through the data and crosses through the y-axis around 0.10 percent. The correlation for the best fit line is R squared equals 0.2458.
1 mi/h = 1.61 km/h
Figure 92. Graph. Phase 1, damping ratio versus decay-only equivalent wind speed for cable 17A.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 16A. The x-axis is equivalent wind speed, ranging from 0 to 5 miles per hour, and the y-axis is damping ratio, ranging from 0 to 0.30 percent. The data ranges from 0 to 2.2 miles per hour, with damping ratios ranging from 0.19 to 0.28 percent. The best fit line cuts through the data and crosses through the y-axis around 0.22 percent. The correlation for the best fit line is R squared equals 0.1204.
1 mi/h = 1.61 km/h
Figure 93. Graph. Phase 1, damping ratio versus decay-only equivalent wind speed for cable 16A.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 15A. The x-axis is equivalent wind speed, ranging from 0 to 5 miles per hour, and the y-axis is damping ratio, ranging from 0 to 0.25 percent. The data ranges from 0 to 2.7 miles per hour, with damping ratios ranging from 0.15 to 0.21 percent. The best fit line cuts through the data and crosses through the y-axis around 0.18 percent. The correlation for the best fit line is R squared equals 0.0709.
1 mi/h = 1.61 km/h
Figure 94. Graph. Phase 1, damping ratio versus decay-only equivalent wind speed for cable 15A.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 12A. The x-axis is equivalent wind speed, ranging from 0 to 20 miles per hour, and the y-axis is damping ratio, ranging from 0 to 0.60 percent. The data ranges from 9 to 17 miles per hour, with damping ratios ranging from 0.20 to 0.50 percent. The best fit line cuts through the data and crosses through the y-axis around 0.10 percent. The correlation for the best fit line is R squared equals 0.5367.
1 mi/h = 1.61 km/h
Figure 95. Graph. Phase 1, damping ratio versus decay-only equivalent wind speed for cable 12A.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 20C. The x-axis is equivalent wind speed, ranging from 0 to 15 miles per hour, and the y-axis is damping ratio, ranging from 0 to 0.20 percent. The data ranges from 4 to 11 miles per hour, with damping ratios ranging from 0.12 to 0.19 percent. The best fit line cuts through the data and crosses through the y-axis around 0.11 percent. The correlation for the best fit line is R squared equals 0.5057.
1 mi/h = 1.61 km/h
Figure 96. Graph. Phase 1, damping ratio versus decay-only equivalent wind speed for cable 20C.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 19C. The x-axis is equivalent wind speed, ranging from 0 to 15 miles per hour, and the y-axis is damping ratio, ranging from 0 to 0.20 percent. The data ranges from 6 to 12 miles per hour, with damping ratios ranging from 0.12 to 0.15 percent. The best fit line cuts through the data and crosses through the y-axis around 0.07 percent. The correlation for the best fit line is R squared equals 0.8361.
1 mi/h = 1.61 km/h
Figure 97. Graph. Phase 1, damping ratio versus decay-only equivalent wind speed for cable 19C.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 18C. The x-axis is equivalent wind speed, ranging from 0 to 10 miles per hour, and the y-axis is damping ratio, ranging from 0 to 0.20 percent. The data ranges from 3 to 7 miles per hour, with damping ratios ranging from 0.08 to 0.15 percent. The best fit line cuts through the data and crosses through the y-axis around 0.05 percent. The correlation for the best fit line is R squared equals 0.5766.
1 mi/h = 1.61 km/h
Figure 98. Graph. Phase 1, damping ratio versus decay-only equivalent wind speed for cable 18C.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 17C. The x-axis is equivalent wind speed, ranging from 0 to 10 miles per hour, and the y-axis is damping ratio, ranging from 0 to 0.20 percent. The data ranges from 2 to 5 miles per hour, with damping ratios ranging from 0.13 to 0.15 percent. The best fit line cuts through the data and crosses through the y-axis around 0.15 percent. The correlation for the best fit line is R squared equals 0.3876.
1 mi/h = 1.61 km/h
Figure 99. Graph. Phase 1, damping ratio versus decay-only equivalent wind speed for cable 17C.

PHASE 2 AERODYNAMIC DAMPING PLOTS

Note that cables 20A, 19A, 18A, and 17A did not have significant wind data recorded during their testing. In these plots, "Total" refers to wind data recorded over the entire test run, while "Decay Only" refers to wind data that is recorded only between the start and stop values of the time filter.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 16A. The x-axis is equivalent wind speed, ranging from 0 to 5 miles per hour, and the y-axis is damping ratio, ranging from 1.62 to 1.72 percent. The data ranges from 1 to 2.5 miles per hour, with damping ratios ranging from 1.66 to 1.71 percent. The best fit line cuts through the data and crosses through the y-axis around 1.63 percent. The correlation for the best fit line is R squared equals 0.4439.
1 mi/h = 1.61 km/h
Figure 100. Graph. Phase 2, damping ratio versus total equivalent wind speed for cable 16A.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 15A. The x-axis is equivalent wind speed, ranging from 0 to 8 miles per hour, and the y-axis is damping ratio, ranging from 1.78 to 1.94 percent. The data ranges from 3 to 6 miles per hour, with damping ratios ranging from 1.79 to 1.90 percent. The best fit line cuts through the data and crosses through the y-axis around 1.91 percent. The correlation for the best fit line is R squared equals 0.1477.
1 mi/h = 1.61 km/h
Figure 101. Graph. Phase 2, damping ratio versus total equivalent wind speed for cable 15A.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 14A. The x-axis is equivalent wind speed, ranging from 0 to 5 miles per hour, and the y-axis is damping ratio, ranging from 1.75 to 1.95 percent. The data ranges from 0 to 3.2 miles per hour, with damping ratios ranging from 1.77 to 1.94 percent. The best fit line cuts through the data and crosses through the y-axis around 1.80 percent. The correlation for the best fit line is R squared equals 0.0125.
1 mi/h = 1.61 km/h
Figure 102. Graph. Phase 2, damping ratio versus total equivalent wind speed for cable 14A.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 13A. The x-axis is equivalent wind speed, ranging from 0 to 8 miles per hour, and the y-axis is damping ratio, ranging from 1.66 to 1.86 percent. The data ranges from 2 to 5 miles per hour, with damping ratios ranging from 1.70 to 1.84 percent. The best fit line cuts through the data and crosses through the y-axis around 1.67 percent. The correlation for the best fit line is R squared equals 0.6191.
1 mi/h = 1.61 km/h
Figure 103. Graph. Phase 2, damping ratio versus total equivalent wind speed for cable 13A.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 12A. The x-axis is equivalent wind speed, ranging from 0 to 5 miles per hour, and the y-axis is damping ratio, ranging from 1.90 to 1.98 percent. The data ranges from 1.2 to 4.3 miles per hour, with damping ratios ranging from 1.91 to 1.97 percent. The best fit line cuts through the data and crosses through the y-axis around 1.92 percent. The correlation for the best fit line is R squared equals 0.0189.
1 mi/h = 1.61 km/h
Figure 104. Graph. Phase 2, damping ratio versus total equivalent wind speed for cable 12A.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 20C. The x-axis is equivalent wind speed, ranging from 0 to 15 miles per hour, and the y-axis is damping ratio, ranging from 1.30 to 1.46 percent. The data ranges from 4.5 to 14.5 miles per hour, with damping ratios ranging from 1.33 to 1.45 percent. The best fit line cuts through the data and crosses through the y-axis around 1.37 percent. The correlation for the best fit line is R squared equals 0.0246.
1 mi/h = 1.61 km/h
Figure 105. Graph. Phase 2, damping ratio versus total equivalent wind speed for cable 20C.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 19C. The x-axis is equivalent wind speed, ranging from 0 to 10 miles per hour, and the y-axis is damping ratio, ranging from 1.30 to 1.62 percent. The data ranges from 4 to 9 miles per hour, with damping ratios ranging from 1.36 to 1.60 percent. The best fit line cuts through the data and crosses through the y-axis around 1.60 percent. The correlation for the best fit line is R squared equals 0.2059.
1 mi/h = 1.61 km/h
Figure 106. Graph. Phase 2, damping ratio versus total equivalent wind speed for cable 19C.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 18C. The x-axis is equivalent wind speed, ranging from 0 to 15 miles per hour, and the y-axis is damping ratio, ranging from 1.56 to 1.80 percent. The data ranges from 5 to 14 miles per hour, with damping ratios ranging from 1.59 to 1.79 percent. The best fit line cuts through the data and crosses through the y-axis around 1.56 percent. The correlation for the best fit line is R squared equals 0.2696.
1 mi/h = 1.61 km/h
Figure 107. Graph. Phase 2, damping ratio versus total equivalent wind speed for cable 18C.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 17C. The x-axis is equivalent wind speed, ranging from 0 to 15 miles per hour, and the y-axis is damping ratio, ranging from 1.55 to 1.75 percent. The data ranges from 4 to 12 miles per hour, with damping ratios ranging from 1.6 to 1.71 percent. The best fit line cuts through the data and crosses through the y-axis around 1.55 percent. The correlation for the best fit line is R squared equals 0.51.
1 mi/h = 1.61 km/h
Figure 108. Graph. Phase 2, damping ratio versus total equivalent wind speed for cable 17C.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 16C. The x-axis is equivalent wind speed, ranging from 0 to 15 miles per hour, and the y-axis is damping ratio, ranging from 1.94 to 2.10 percent. The data ranges from 4 to 9.5 miles per hour, with damping ratios ranging from 1.96 to 2.08 percent. The best fit line cuts through the data and crosses through the y-axis around 1.99 percent. The correlation for the best fit line is R squared equals 0.0088.
1 mi/h = 1.61 km/h
Figure 109. Graph. Phase 2, damping ratio versus total equivalent wind speed for cable 16C.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 15C. The x-axis is equivalent wind speed, ranging from 0 to 15 miles per hour, and the y-axis is damping ratio, ranging from 1.74 to 1.86 percent. The data ranges from 4.5 to 13 miles per hour, with damping ratios ranging from 1.76 to 1.84 percent. The best fit line cuts through the data and crosses through the y-axis around 1.77 percent. The correlation for the best fit line is R squared equals 0.0522.
1 mi/h = 1.61 km/h
Figure 110. Graph. Phase 2, damping ratio versus total equivalent wind speed for cable 15C.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 14C. The x-axis is equivalent wind speed, ranging from 0 to 15 miles per hour, and the y-axis is damping ratio, ranging from 1.80 to 2.20 percent. The data ranges from 4 to 10.5 miles per hour, with damping ratios ranging from 1.93 to 2.20 percent. The best fit line cuts through the data and crosses through the y-axis around 1.89 percent. The correlation for the best fit line is R squared equals 0.2586.
1 mi/h = 1.61 km/h
Figure 111. Graph. Phase 2, damping ratio versus total equivalent wind speed for cable 14C.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 20B. The x-axis is equivalent wind speed, ranging from 0 to 8 miles per hour, and the y-axis is damping ratio, ranging from 1.22 to 1.46 percent. The data ranges from 1 to 5 miles per hour, with damping ratios ranging from 1.23 to 1.45 percent. The best fit line cuts through the data and crosses through the y-axis around 1.39 percent. The correlation for the best fit line is R squared equals 0.2238.
1 mi/h = 1.61 km/h
Figure 112. Graph. Phase 2, damping ratio versus total equivalent wind speed for cable 20B.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 19B. The x-axis is equivalent wind speed, ranging from 0 to 8 miles per hour, and the y-axis is damping ratio, ranging from 1.12 to 1.28 percent. The data ranges from 1.5 to 6 miles per hour, with damping ratios ranging from 1.14 to 1.24 percent. The best fit line cuts through the data and crosses through the y-axis around 1.17 percent. The correlation for the best fit line is R squared equals 0.1512.
1 mi/h = 1.61 km/h
Figure 113. Graph. Phase 2, damping ratio versus total equivalent wind speed for cable 19B.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 18B. The x-axis is equivalent wind speed, ranging from 0 to 8 miles per hour, and the y-axis is damping ratio, ranging from 1.50 to 1.90 percent. The data ranges from 1 to 5 miles per hour, with damping ratios ranging from 1.60 to 1.85 percent. The best fit line cuts through the data and crosses through the y-axis around 1.87 percent. The correlation for the best fit line is R squared equals 0.1016.
1 mi/h = 1.61 km/h
Figure 114. Graph. Phase 2, damping ratio versus total equivalent wind speed for cable 18B.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 17B. The x-axis is equivalent wind speed, ranging from 0 to 10 miles per hour, and the y-axis is damping ratio, ranging from 1.40 to 1.56 percent. The data ranges from 2.5 to 8.5 miles per hour, with damping ratios ranging from 1.42 to 1.55 percent. The best fit line cuts through the data and crosses through the y-axis around 1.49 percent. The correlation for the best fit line is R squared equals 0.0063.
1 mi/h = 1.61 km/h
Figure 115. Graph. Phase 2, damping ratio versus total equivalent wind speed for cable 17B.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 16B. The x-axis is equivalent wind speed, ranging from 0 to 10 miles per hour, and the y-axis is damping ratio, ranging from 1.58 to 1.74 percent. The data ranges from 2 to 7 miles per hour, with damping ratios ranging from 1.59 to 1.73 percent. The best fit line cuts through the data and crosses through the y-axis around 1.66 percent. The correlation for the best fit line is R squared equals 0.0003.
1 mi/h = 1.61 km/h
Figure 116. Graph. Phase 2, damping ratio versus total equivalent wind speed for cable 16B.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 15B. The x-axis is equivalent wind speed, ranging from 0 to 8 miles per hour, and the y-axis is damping ratio, ranging from 1.60 to 1.80 percent. The data ranges from 2 to 6.5 miles per hour, with damping ratios ranging from 1.63 to 1.79 percent. The best fit line cuts through the data and crosses through the y-axis around 1.72 percent. The correlation for the best fit line is R squared equals 0.0002.
1 mi/h = 1.61 km/h
Figure 117. Graph. Phase 2, damping ratio versus total equivalent wind speed for cable 15B.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 20D. The x-axis is equivalent wind speed, ranging from 0 to 5 miles per hour, and the y-axis is damping ratio, ranging from 1.15 to 1.35 percent. The data ranges from 1 to 2 miles per hour, with damping ratios ranging from 1.22 to 1.35 percent. The best fit line cuts through the data and crosses through the y-axis around 1.30 percent. The correlation for the best fit line is R squared equals 0.0445.
1 mi/h = 1.61 km/h
Figure 118. Graph. Phase 2, damping ratio versus total equivalent wind speed for cable 20D.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 19D. The x-axis is equivalent wind speed, ranging from 0 to 5 miles per hour, and the y-axis is damping ratio, ranging from 1.16 to 1.32 percent. The data ranges from 2 to 3.6 miles per hour, with damping ratios ranging from 1.17 to 1.29 percent. The best fit line cuts through the data and crosses through the y-axis around 1.29 percent. The correlation for the best fit line is R squared equals 0.0969.
1 mi/h = 1.61 km/h
Figure 119. Graph. Phase 2, damping ratio versus total equivalent wind speed for cable 19D.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 18D. The x-axis is equivalent wind speed, ranging from 0 to 5 miles per hour, and the y-axis is damping ratio, ranging from 1.42 to 1.58 percent. The data ranges from 1 to 4.5 miles per hour, with damping ratios ranging from 1.42 to 1.57 percent. The best fit line cuts through the data and crosses through the y-axis around 1.54 percent. The correlation for the best fit line is R squared equals 0.1115.
1 mi/h = 1.61 km/h
Figure 120. Graph. Phase 2, damping ratio versus total equivalent wind speed for cable 18D.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 17D. The x-axis is equivalent wind speed, ranging from 0 to 8 miles per hour, and the y-axis is damping ratio, ranging from 1.54 to 1.70 percent. The data ranges from 2 to 6.5 miles per hour, with damping ratios ranging from 1.56 to 1.67 percent. The best fit line cuts through the data and crosses through the y-axis around 1.62 percent. The correlation for the best fit line is R squared equals 0.0004.
1 mi/h = 1.61 km/h
Figure 121. Graph. Phase 2, damping ratio versus total equivalent wind speed for cable 17D.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 16D. The x-axis is equivalent wind speed, ranging from 0 to 10 miles per hour, and the y-axis is damping ratio, ranging from 1.46 to 1.70 percent. The data ranges from 4 to 7 miles per hour, with damping ratios ranging from 1.53 to 1.69 percent. The best fit line cuts through the data and crosses through the y-axis around 1.49 percent. The correlation for the best fit line is R squared equals 0.181.
1 mi/h = 1.61 km/h
Figure 122. Graph. Phase 2, damping ratio versus total equivalent wind speed for cable 16D.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 15D. The x-axis is equivalent wind speed, ranging from 0 to 10 miles per hour, and the y-axis is damping ratio, ranging from 1.50 to 1.70 percent. The data ranges from 3 to 9 miles per hour, with damping ratios ranging from 1.52 to 1.68 percent. The best fit line cuts through the data and crosses through the y-axis around 1.67 percent. The correlation for the best fit line is R squared equals 0.1887.
1 mi/h = 1.61 km/h
Figure 123. Graph. Phase 2, damping ratio versus total equivalent wind speed for cable 15D.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 14D. The x-axis is equivalent wind speed, ranging from 0 to 10 miles per hour, and the y-axis is damping ratio, ranging from 1.80 to 1.96 percent. The data ranges from 3 to 9.5 miles per hour, with damping ratios ranging from 1.83 to 1.93 percent. The best fit line cuts through the data and crosses through the y-axis around 1.83 percent. The correlation for the best fit line is R squared equals 0.0552.
1 mi/h = 1.61 km/h
Figure 124. Graph. Phase 2, damping ratio versus total equivalent wind speed for cable 14D.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 13D. The x-axis is equivalent wind speed, ranging from 0 to 10 miles per hour, and the y-axis is damping ratio, ranging from 2.00 to 2.20 percent. The data ranges from 5 to 9.5 miles per hour, with damping ratios ranging from 2.01 to 2.17 percent. The best fit line cuts through the data and crosses through the y-axis around 2.06 percent. The correlation for the best fit line is R squared equals 0.0083.
1 mi/h = 1.61 km/h
Figure 125. Graph. Phase 2, damping ratio versus total equivalent wind speed for cable 13D.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 16A. The x-axis is equivalent wind speed, ranging from 0 to 5 miles per hour, and the y-axis is damping ratio, ranging from 1.62 to 1.72 percent. The data ranges from 1.7 to 2.6 miles per hour, with damping ratios ranging from 1.66 to 1.71 percent. The best fit line cuts through the data and crosses through the y-axis around 1.69 percent. The correlation for the best fit line is R squared equals 0.0122.
1 mi/h = 1.61 km/h
Figure 126. Graph. Phase 2, damping ratio versus decay-only equivalent wind speed for cable 16A.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 15A. The x-axis is equivalent wind speed, ranging from 0 to 8 miles per hour, and the y-axis is damping ratio, ranging from 1.78 to 1.94 percent. The data ranges from 2 to 6.5 miles per hour, with damping ratios ranging from 1.79 to 1.90 percent. The best fit line cuts through the data and crosses through the y-axis around 1.92 percent. The correlation for the best fit line is R squared equals 0.287.
1 mi/h = 1.61 km/h
Figure 127. Graph. Phase 2, damping ratio versus decay-only equivalent wind speed for cable 15A.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 14A. The x-axis is equivalent wind speed, ranging from 0 to 5 miles per hour, and the y-axis is damping ratio, ranging from 1.75 to 1.95 percent. The data ranges from 0 to 4.5 miles per hour, with damping ratios ranging from 1.77 to 1.93 percent. The best fit line cuts through the data and crosses through the y-axis around 1.81 percent. The correlation for the best fit line is R squared equals 0.0085.
1 mi/h = 1.61 km/h
Figure 128. Graph. Phase 2, damping ratio versus decay-only equivalent wind speed for cable 14A.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 13A. The x-axis is equivalent wind speed, ranging from 0 to 8 miles per hour, and the y-axis is damping ratio, ranging from 1.66 to 1.86 percent. The data ranges from 1 to 6 miles per hour, with damping ratios ranging from 1.70 to 1.84 percent. The best fit line cuts through the data and crosses through the y-axis around 1.72 percent. The correlation for the best fit line is R squared equals 0.4561.
1 mi/h = 1.61 km/h
Figure 129. Graph. Phase 2, damping ratio versus decay-only equivalent wind speed for cable 13A.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 12A. The x-axis is equivalent wind speed, ranging from 0 to 5 miles per hour, and the y-axis is damping ratio, ranging from 1.90 to 1.98 percent. The data ranges from 0.7 to 4.8 miles per hour, with damping ratios ranging from 1.91 to 1.97 percent. The best fit line cuts through the data and crosses through the y-axis around 1.92 percent. The correlation for the best fit line is R squared equals 0.1136.
1 mi/h = 1.61 km/h
Figure 130. Graph. Phase 2, damping ratio versus decay-only equivalent wind speed for cable 12A.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 20C. The x-axis is equivalent wind speed, ranging from 0 to 15 miles per hour, and the y-axis is damping ratio, ranging from 1.30 to 1.46 percent. The data ranges from 4 to 13 miles per hour, with damping ratios ranging from 1.33 to 1.45 percent. The best fit line cuts through the data and crosses through the y-axis around 1.34 percent. The correlation for the best fit line is R squared equals 0.1679.
1 mi/h = 1.61 km/h
Figure 131. Graph. Phase 2, damping ratio versus decay-only equivalent wind speed for cable 20C.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 19C. The x-axis is equivalent wind speed, ranging from 0 to 10 miles per hour, and the y-axis is damping ratio, ranging from 1.30 to 1.62 percent. The data ranges from 4 to 10 miles per hour, with damping ratios ranging from 1.36 to 1.60 percent. The best fit line cuts through the data and crosses through the y-axis around 1.50 percent. The correlation for the best fit line is R squared equals 0.0183.
1 mi/h = 1.61 km/h
Figure 132. Graph. Phase 2, damping ratio versus decay-only equivalent wind speed for cable 19C.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 18C. The x-axis is equivalent wind speed, ranging from 0 to 15 miles per hour, and the y-axis is damping ratio, ranging from 1.56 to 1.80 percent. The data ranges from 3 to 14 miles per hour, with damping ratios ranging from 1.58 to 1.75 percent. The best fit line cuts through the data and crosses through the y-axis around 1.60 percent. The correlation for the best fit line is R squared equals 0.2651.
1 mi/h = 1.61 km/h
Figure 133. Graph. Phase 2, damping ratio versus decay-only equivalent wind speed for cable 18C.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 17C. The x-axis is equivalent wind speed, ranging from 0 to 15 miles per hour, and the y-axis is damping ratio, ranging from 1.55 to 1.75 percent. The data ranges from 5 to 15 miles per hour, with damping ratios ranging from 1.60 to 1.71 percent. The best fit line cuts through the data and crosses through the y-axis around 1.57 percent. The correlation for the best fit line is R squared equals 0.3919.
1 mi/h = 1.61 km/h
Figure 134. Graph. Phase 2, damping ratio versus decay-only equivalent wind speed for cable 17C.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 16C. The x-axis is equivalent wind speed, ranging from 0 to 15 miles per hour, and the y-axis is damping ratio, ranging from 1.94 to 2.10 percent. The data ranges from 5 to 13 miles per hour, with damping ratios ranging from 1.96 to 2.08 percent. The best fit line cuts through the data and crosses through the y-axis around 1.99 percent. The correlation for the best fit line is R squared equals 0.0093.
1 mi/h = 1.61 km/h
Figure 135. Graph. Phase 2, damping ratio versus decay-only equivalent wind speed for cable 16C.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 15C. The x-axis is equivalent wind speed, ranging from 0 to 20 miles per hour, and the y-axis is damping ratio, ranging from 1.74 to 1.86 percent. The data ranges from 3 to 17 miles per hour, with damping ratios ranging from 1.76 to 1.84 percent. The best fit line cuts through the data and crosses through the y-axis around 1.78 percent. The correlation for the best fit line is R squared equals 0.0626.
1 mi/h = 1.61 km/h
Figure 136. Graph. Phase 2, damping ratio versus decay-only equivalent wind speed for cable 15C.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 14C. The x-axis is equivalent wind speed, ranging from 0 to 15 miles per hour, and the y-axis is damping ratio, ranging from 1.80 to 2.2.0 percent. The data ranges from 4 to 11 miles per hour, with damping ratios ranging from 1.92 to 2.20 percent. The best fit line cuts through the data and crosses through the y-axis around 1.87 percent. The correlation for the best fit line is R squared equals 0.3454.
1 mi/h = 1.61 km/h
Figure 137. Graph. Phase 2, damping ratio versus decay-only equivalent wind speed for cable 14C.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 20B. The x-axis is equivalent wind speed, ranging from 0 to 8 miles per hour, and the y-axis is damping ratio, ranging from 1.22 to 1.46 percent. The data ranges from 0 to 5 miles per hour, with damping ratios ranging from 1.24 to 1.45 percent. The best fit line cuts through the data and crosses through the y-axis around 1.37 percent. The correlation for the best fit line is R squared equals 0.2562.
1 mi/h = 1.61 km/h
Figure 138. Graph. Phase 2, damping ratio versus decay-only equivalent wind speed for cable 20B.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 19B. The x-axis is equivalent wind speed, ranging from 0 to 8 miles per hour, and the y-axis is damping ratio, ranging from 1.12 to 1.28 percent. The data ranges from 0.5 to 6 miles per hour, with damping ratios ranging from 1.14 to 1.24 percent. The best fit line cuts through the data and crosses through the y-axis around 1.18 percent. The correlation for the best fit line is R squared equals 0.1328.
1 mi/h = 1.61 km/h
Figure 139. Graph. Phase 2, damping ratio versus decay-only equivalent wind speed for cable 19B.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 18B. The x-axis is equivalent wind speed, ranging from 0 to 8 miles per hour, and the y-axis is damping ratio, ranging from 1.50 to 1.90 percent. The data ranges from 0 to 6 miles per hour, with damping ratios ranging from 1.60 to 1.84 percent. The best fit line cuts through the data and crosses through the y-axis around 1.74 percent. The correlation for the best fit line is R squared equals 0.1378.
1 mi/h = 1.61 km/h
Figure 140. Graph. Phase 2, damping ratio versus decay-only equivalent wind speed for cable 18B.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 17B. The x-axis is equivalent wind speed, ranging from 0 to 10 miles per hour, and the y-axis is damping ratio, ranging from 1.40 to 1.56 percent. The data ranges from 1.5 to 9 miles per hour, with damping ratios ranging from 1.42 to 1.55 percent. The best fit line cuts through the data and crosses through the y-axis around 1.52 percent. The correlation for the best fit line is R squared equals 0.1249.
1 mi/h = 1.61 km/h
Figure 141. Graph. Phase 2, damping ratio versus decay-only equivalent wind speed for cable 17B.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 16B. The x-axis is equivalent wind speed, ranging from 0 to 10 miles per hour, and the y-axis is damping ratio, ranging from 1.58 to 1.74 percent. The data ranges from 1 to 7 miles per hour, with damping ratios ranging from 1.60 to 1.72 percent. The best fit line cuts through the data and crosses through the y-axis around 1.68 percent. The correlation for the best fit line is R squared equals 0.0662.
1 mi/h = 1.61 km/h
Figure 142. Graph. Phase 2, damping ratio versus decay-only equivalent wind speed for cable 16B.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 15B. The x-axis is equivalent wind speed, ranging from 0 to 8 miles per hour, and the y-axis is damping ratio, ranging from 1.60 to 1.80 percent. The data ranges from 1 to 7.5 miles per hour, with damping ratios ranging from 1.63 to 1.79 percent. The best fit line cuts through the data and crosses through the y-axis around 1.68 percent. The correlation for the best fit line is R squared equals 0.0618.
1 mi/h = 1.61 km/h
Figure 143. Graph. Phase 2, damping ratio versus decay-only equivalent wind speed for cable 15B.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 20D. The x-axis is equivalent wind speed, ranging from 0 to 5 miles per hour, and the y-axis is damping ratio, ranging from 1.15 to 1.35 percent. The data ranges from 0.8 to 2.2 miles per hour, with damping ratios ranging from 1.22 to 1.35 percent. The best fit line cuts through the data and crosses through the y-axis around 1.28 percent. The correlation for the best fit line is R squared equals 0.0035.
1 mi/h = 1.61 km/h
Figure 144. Graph. Phase 2, damping ratio versus decay-only equivalent wind speed for cable 20D.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 19D. The x-axis is equivalent wind speed, ranging from 0 to 5 miles per hour, and the y-axis is damping ratio, ranging from 1.16 to 1.32 percent. The data ranges from 1.5 to 4 miles per hour, with damping ratios ranging from 1.17 to 1.29 percent. The best fit line cuts through the data and crosses through the y-axis around 1.28 percent. The correlation for the best fit line is R squared equals 0.1112.
1 mi/h = 1.61 km/h
Figure 145. Graph. Phase 2, damping ratio versus decay-only equivalent wind speed for cable 19D.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 18D. The x-axis is equivalent wind speed, ranging from 0 to 8 miles per hour, and the y-axis is damping ratio, ranging from 1.42 to 1.58 percent. The data ranges from 0.5 to 5.5 miles per hour, with damping ratios ranging from 1.42 to 1.57 percent. The best fit line cuts through the data and crosses through the y-axis around 1.52 percent. The correlation for the best fit line is R squared equals 0.0673.
1 mi/h = 1.61 km/h
Figure 146. Graph. Phase 2, damping ratio versus decay-only equivalent wind speed for cable 18D.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 17D. The x-axis is equivalent wind speed, ranging from 0 to 8 miles per hour, and the y-axis is damping ratio, ranging from 1.54 to 1.70 percent. The data ranges from 1 to 6 miles per hour, with damping ratios ranging from 1.56 to 1.67 percent. The best fit line cuts through the data and crosses through the y-axis around 1.60 percent. The correlation for the best fit line is R squared equals 0.0311.
1 mi/h = 1.61 km/h
Figure 147. Graph. Phase 2, damping ratio versus decay-only equivalent wind speed for cable 17D.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 16D. The x-axis is equivalent wind speed, ranging from 0 to 10 miles per hour, and the y-axis is damping ratio, ranging from 1.46 to 1.70 percent. The data ranges from 5 to 8 miles per hour, with damping ratios ranging from 1.53 to 1.79 percent. The best fit line cuts through the data and crosses through the y-axis around 1.60 percent. The correlation for the best fit line is R squared equals 0.0002.
1 mi/h = 1.61 km/h
Figure 148. Graph. Phase 2, damping ratio versus decay-only equivalent wind speed for cable 16D.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 15D. The x-axis is equivalent wind speed, ranging from 0 to 10 miles per hour, and the y-axis is damping ratio, ranging from 1.50 to 1.70 percent. The data ranges from 1.5 to 9.5 miles per hour, with damping ratios ranging from 1.52 to 1.68 percent. The best fit line cuts through the data and crosses through the y-axis around 1.65 percent. The correlation for the best fit line is R squared equals 0.2406.
1 mi/h = 1.61 km/h
Figure 149. Graph. Phase 2, damping ratio versus decay-only equivalent wind speed for cable 15D.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 14D. The x-axis is equivalent wind speed, ranging from 0 to 15 miles per hour, and the y-axis is damping ratio, ranging from 1.80 to 1.96 percent. The data ranges from 3 to 10 miles per hour, with damping ratios ranging from 1.83 to 1.93 percent. The best fit line cuts through the data and crosses through the y-axis around 1.84 percent. The correlation for the best fit line is R squared equals 0.0322.
1 mi/h = 1.61 km/h
Figure 150. Graph. Phase 2, damping ratio versus decay-only equivalent wind speed for cable 14D.

This graph shows a plot of the damping ratio versus equivalent wind speed with a best fit line through the data from cable 13D. The x-axis is equivalent wind speed, ranging from 0 to 15 miles per hour, and the y-axis is damping ratio, ranging from 2.00 to 2.20 percent. The data ranges from 2 to 11 miles per hour, with damping ratios ranging from 2.01 to 2.17 percent. The best fit line cuts through the data and crosses through the y-axis around 2.10 percent. The correlation for the best fit line is R squared equals 0.0298.
1 mi/h = 1.61 km/h
Figure 151. Graph. Phase 2, damping ratio versus decay-only equivalent wind speed for cable 13D.

 

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