Coastal Management: Hard Engineering

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1

Define the term hard engineering.

Hard engineering is the usage of made made structures such as rock armour and groynes to combat coastal erosion

2

Give some examples of hard engineering

-Rock Armour
-Gabions
-Sea Wall

3

How do people use rock armour?

By using large boulders, wave energy can be dispersed before it hits the coast

4

What are the advantages of using rock armour?

:) Allows beach to build up
:) Effective absorbs wave energy

5

What are the disadvantages of using rock armour?

:( Expensive to obtain and transport rocks

6

How do people use sea walls?

A sea wall designed to absorb the impact of a wave, it it is curved, the energy of the wave can be reflected back

7

What are the advantages of using sea walls?

:) Effectively protects land, cliffs and buildings
:) Can sometimes prevent coastal flooding

8

What are the disadvantages of using sea walls?

:( Expensive to maintain, after repeated impacts by waves the wall may be eroded and repairs are costly

9

How do people use gabions?

By filling wish meshes with small rocks and boulders that help absorb wave impact

10

What are the advantages of using gabions?

:) Cheap and efficient

11

What are the disadvantages of using gabions?

:( Visually unappealing

12

What are the general advantages of using hard engineering ?

:) More reliable compared to soft engineering
:) Does not need as much maintenance compared to soft engineering
:) More effective at combating coastal erosion

13

What are the general disadvantages of using hard engineering ?

:( Expensive to maintain
:( Usually a short term method
:( Visually unattractive


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