Air-Photo Analysis of Armor Stones on Cleveland Dikes.
ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MISS
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The air-photo procedure described herein is a rapid and accurate means of acquiring armor-stone-size data. The data acquired by this procedure show that the armor-stone-size data for the 50-ft-wide control sections are representative of the armor-stone conditions over the extent of dikes 1, 2, and 12. Estimates of the actual percentage by number of armor stones weighing less than 1.5 tons were determined for each 100-ft-wide section over the entire extent of the dikes. The average value of these data was 51.8 percent. Analysis of ground-measured armor stone dimensions and actual weights indicates that the 2.73-Ft template circle diameter used in this study was a conservative procedure and was biased toward classifying stones as having weights equal to or greater than 1.5 tons when they may in fact weigh less than 1.5 tons. Author
- Cartography and Aerial Photography
- Geology, Geochemistry and Mineralogy
- Structural Engineering and Building Technology