Hard Engineering - Sea Walls

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Hard Engineering - Sea Walls

Advantages

  • Offers highest protection to property in short term
  • Life span of up to 50 years
  • Effectively halts erosion locally

Disadvantages

  • Erosion can continue where scheme ends on unprotected areas
  • Needs careful maintenance to prevent concrete shrinkage, debonding and micro-fracturing
  • Ongoing maintenance costs
  • Waves reflecting off the wall scour the beach, and this can cause greater erosion problems downdrift.

Evaluation

Good for small sections of coastlines due to strength and life span, but cost and maintenance outweigh positives as can influence greater erosion at other parts of coastline.

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