. Construction materials for coastal structures. Coastal engineering; Building materials. Bottom. Elevation DOLOS (DOLOSSE, plural) or Elevation TRIBAR Figure 32. Concrete armor units ( Army, Corps of Engineers, CERC, 1977). 159. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Moffatt & Nichol, Engineers; Coastal Engineering Research Center (U. S. ). Fort Belvoir, Va. : The Center

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