random riprap

  • 1Coastal management — This article is about coastal management aimed to prevent erosion and flooding. For broader management issues, see Integrated coastal zone management. Oosterscheldekering sea wall, the Netherlands. In some jurisdictions the terms sea defense and… …

    Wikipedia

  • 2Accropode — blocks are man made unreinforced concrete objects designed to resist the action of waves on breakwaters and coastal structures. HistoryThe Accropode is the first single layer artificial armour unit developed by [http://www.sogreah.fr Sogreah] in… …

    Wikipedia

  • 3silica mineral — Any of the forms of silicon dioxide (SiO2), including quartz, tridymite, cristobalite, coesite, stishovite, melanophlogite, lechatelierite, and chalcedony. Various kinds of silica minerals have been produced synthetically. * * * Introduction… …

    Universalium