Seawall

To design the coastal defense a couple of decisions need to be made. In general, coastal defense can consist of the construction of a seawall or a natural sand reef in front of the island. Both are viable options in to defend the island, yet the decision has been made to focus the research solely on the seawall. For more, the decision has been made to exclusively look at the wind head on the island and the design of 1 profile to suit these conditions, this means there will be no optimization of the seawall around the island to allow for a reduction is production costs.

In this piece the design process will be explained, first the requirements will be stated, then we will look at how the height of the seawall corelates to the slope of the outer wall and the material of which the outer wall is constructed. With this as a base line the next main question is asked:

With what data does the seawall of the NSWPH need to be designed, and what profile will be suitable in this situation to successfully defend the Island with as low as costs as possible?

With this as the main question, the next 4 side questions are asked to aid with the research:

1. What are the factors which will affect the design the seawall?
2. What is the optimum material to use for the outer seawall, considering the slope and height of the seawall?
3. What is the optimal slope for the seawall, considering the material and the height of the seawall?
4. What is the optimal height for the seawall, considering the material and the slope of the seawall?

As visible above side question 2 to 4 are very related to each other, as such, in this piece they will be looked at together, after they are touched briefly.

The more detailed prescription of this research can be found in supplement X.

A management plan has been drawn up for the seawall. This includes a decomposition, risk analysis and an inspection plan.