The length is 200 to 250 feet; the cost is from Ap600 to Ap800 according to depth of foundation. ... If a plank comes off and is not replaced by the next tide with one sufficient to cover 3 or 4 piles, there will probably be serious damage in rough ... Long groynes bring up sand, but shingle keeps to within a couple of hundred feet of high water mark. ... shore, Ap8 Ios. 5d. per lineal foot of groyne. The sea wall cost Ap9 3s. per lineal foot. It is intended to raise groynes when the beach accumulates.
|Title||:||Report by Board of Commerce and Navigation, New Jersey, on the Erosion and Protection of the New Jersey Beaches|
|Author||:||New Jersey. Board of Commerce and Navigation. Engineering Advisory Board on Coast Erosion|