Patent ID: 7976763

Claim:
A method of making a protective element for a breakwater, the protective element having a plate-shaped base and two projections extending from opposite sides of the base, the method comprising the steps of: creating a cavity in a substrate and inserting bottom shuttering into the substrate at sides of the cavity to define a mold for a first of the two projections; erecting a middle shuttering on a surface of the substrate so as to define a mold for the base; erecting a top shuttering above the middle shuttering to define a mold for a second of the two projections; and pouring concrete into the bottom, middle, and top shutterings separately or continuously and allowing the concrete to set, whereby the set concrete forms the protective element, wherein the step of pouring the concrete includes pouring concrete into the bottom and middle shutterings and allowing the concrete in the bottom and middle shutterings to set sufficiently to support the top shuttering, and wherein the step of erecting the top shuttering includes erecting the top shuttering on a surface of the concrete in the middle shuttering.