Examples of hard engineering are Gabions and groynes
Gabions- Cages of boulders, built into cliff faces. The rocks absorb the energy of the waves
Benefits:
- Cheaper than sea walls, effective where there are high erosion rates
Costs:
- Ugly, found in large numbers
Groynes- Wooden structure that traps sediment moving via LSD, beach builds up>less erosion
Benefits:
- Stops LSD, beach builds up and there is less erosion
Costs:
- Can increase sand starvation in other areas of the coast, leading to more erosion there.
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