BED, BANK & SHORE BED, BANK & SHORE PROTECTION - CHAPTER 12 C potx

Caisson breakwater vertical wall BW 4.. Revetment breakwater rubble-mound BW 5... • Definitions: Breakwater is a structure that protects the area in its lee from wave attack.. • Purpose

Ocean & Coastal Engineering Faculty

1 Introduction

2 Types of breakwaters

3 Caisson breakwater (vertical wall BW)

4 Revetment breakwater (rubble-mound BW)

5 Summaries

• Definitions:

Breakwater is a structure that protects the area in its lee from wave attack

• Purpose of breakwaters:

+ To provide shelter from the waves

+ Through this shelter, to manipulate the littoral transport conditions and thereby to trap some sand

Types of breakwaters

- Detached breakwater (Breakwaters be completely isolated from the shore )

+ Headland breakwaters

+ Nearshore Breakwaters

- Attached breakwater (Breakwaters can be connected to the shoreline)

- Low crested structure

- High crested structure

- Rubble mound structure

- Composite structure

- Emerged breakwaters

- Submerged breakwaters

- Floating breakwater

- Using mass (Caissons)

- Using a revetment slope ( e.g with rock or concrete armour units )

Types of breakwaters

Breakwater in Presque Isle, Pennsylvania (1994)

Shoreline Breakwater,

Elmer, UK

Low crested structure in Denmark

Low crested structure in UK

Low crested during storm surge, IJmuiden, NL

Types of breakwaters

- Detached breakwater (Breakwaters be completely isolated from the shore )

+ Headland breakwaters

+ Nearshore Breakwaters

- Attached breakwater (Breakwaters can be connected to the shoreline)

- Low crested structure

- High crested structure

- Rubble mound structure

- Composite structure

- Emerged breakwaters

- Submerged breakwaters

- Floating breakwater

- Using mass (Caissons)

- Using a revetment slope ( e.g with rock or concrete armour units )

Caisson breakwater

• Definition

• Applicable conditions (cases???)

• Loads (wave loads)

• Cross section design

• Stabilities

Rubble-mound breakwater

• Definition

• Applicable conditions (cases???)

• Loads (wave loads)

• Cross section design

• Stabilities (slope, toe)