Hard Engineering

Hope this is useful, don't hesistate to ask any Geography questions to me. Sorry about any spelling mistakes.

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  • Created by: Curlot
  • Created on: 06-05-14 19:05

Groynes

  • The sand builds up on one side of the Groynes. The beach becomes longer of the higher side as well.
  • Groynes can be concrete/rock/wood
  • Cost £2,000 per metre (on average)
  • Negative impacts further down the coast.
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Sea Wall

  • Usually 3-5m high, concrete structure which absorbs energy of the waves.
  • Cost £2,000 per metre.
  • Provide a promonade area.
  • Permenant strcuture that lasts for years.
  • Can look ugly.
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Revetments

  • Deposition of sand- beach gets larger.
  • Breakwaters are a barrier that have been created slightly out to sea.
  • There are many different tpes of breakwaters;natureal  rock and concrete.
  • Cost £ 2,500 per metre.
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Gabions

  • Rocks boulders held in a wire mesh cages and used to protect the vunerable areas from destructive waves.
  • Cost £100 per metre.
  • Mud sediment is being deposited and grass grown over the boxes.
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Rock Amour or Rip Rap

  • Giant granite boulders, brought from Norway, at the foor of cliffs to absorb wave energy.
  • Cost £300 per metre.
  • This is generally used in areas prone to erosion to absorb wave energy and hold the beach material
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