VIRGINIA BEACH SAND SIZE AS BASIS FOR DESIGN OF ON-SHORE DREDGED MATERIAL DISPOSA

Cyril Galvin, James W. Holton, Ronald G. Vann

Abstract


Analyses of sand samples collected along and across the Atlantic Ocean shore of Virginia Beach, Virginia, suggest that sand placed on the shore should have a minimum median diameter of 0.20 mm to efficiently benefit the beach. Size analyses and shoreline change data show that the existing long-term beach replenishment by mechanical bypassing across Rudee Inlet and by truck-hauled sand from land sources is effective and necessary to maintain the shore along the commercial segment of Virginia Beach. The data also indicate that the northern segment of Virginia Beach shore, occupying more than half the distance between Rudee Inlet and Fort Story, is gaining sand. About two million cubic meters of sand to be dredged from the Atlantic Ocean Channel offshore of Virginia Beach will be suitable for placement on the beach.

Keywords


sediment size; Virginia; dredging; dredging design; material disposal; on shore disposal

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