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Beachsaver Reefs |
  It
is estimated that just by the initial volumetric savings in sand the reef
can reduce sand nourishment costs by 20%. But even greater savings are
realized when the reef extends the cycle of needed maintenance renourishment,
for example from every five to every ten years, by enhancing the fill performance.
The turnkey cost of designing, permitting, manufacturing, and installing
a Beachsaver reef system in the northeast U.S. is approximately $750.00
per linear foot.
The following is a breakdown of the actual costs for the construction of three New Jersey reefs in 1993 and 1994:
These costs could be compared to a benefit defined as the average yearly decreased volume of sand lost to erosion (derived from the Stevens study) multiplied by the current price/cubic yard for sand multiplied by the projected 50 years of useful life of the structure to arrive at a rough cost/benefit ratio. The decreased number of mobilizations of equipment for sand renourishment work should also be taken into account, although the number of 'necessary' versus 'saved nourishments is difficult to predict, being highly dependent upon weather and yearly conditions. Breakwaters
International Inc. [Erosion]
[Beachsaver Reef] |
