Discussion
Consider the following statements about climate adaptation in structure design.
1. A sea level allowance is added over the design life.
2. Adaptive designs allow later raising at modest cost.
3. Designing immediately for the worst case is always cheapest.
Answer: A
Correct answer: 1 and 2 only
Statements 1 and 2 describe current practice: an allowance for sea level rise over the design life is added to the design water level, and adaptive provision allows later raising cheaply. Statement 3 is wrong - building immediately for the worst plausible case commits money now against a rise that may not occur, and discounting alone usually makes the staged approach the cheaper of the two.
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