Cronulla sea wall?

Question

What do the parts of the wall do and is the wall effective

( any help would be greatly appreciated)

Answer 1

I think its a popular surfing and diving area

Answer 2

Here look at this

http://en.wikipedia.org/wiki/Sea_wall

Answer 3

Herer is a photo and post by the designer.  You can contact them directly.  The interlocking hexagonal pieces are to istrute the wave energy thoruout the wall and dissipate the wave energy.  This replaced the old wall.

These unit.s are called 'Seabees' - what else would you call something that forms a honeycomb in the sea? Invented by me one Saturday afternoon in Sydney, August 1974. First used at Christian Brothers beach house at Wamberal Beach [ref Brother Cramm] in 1978. First major installation at Abbot Pont, Queensland, 1981. Cronulla Beach Seawall also incorportese a floating gabion to in the beach over the remnants of the 1939 wall which was damaged in 1939 & finally collapsed in the storms of 1974. Cramic Seabees can be found at Garden Island and Gosford, also at Green Island. Recent projects include Patagonia, Cocos (Keeling) Islands, Beacon Point [Melbourne], Blackpool & Al Khiran in Kuwait.

Modern seawalls aim to destroy most of the incident energy, resulting in low reflected waves and much reduced turbulence and thus take the form of sloping revetments. Current designs use porous designs of rock, concrete armour (Seabees, SHEDs, Xblocs) with intermediate flights of steps for beach access, whilst in places where high rates of pedestrian access are required, the steps take over the whole of the frontage, but at a flatter slope if the same crest levels are to be achieved.