When all was stable the lisa a
lifted the caisson
off the barge allowing it to return to its berth.
It sits on location at the end of an unfinished line of precast
concrete caissons, 500 m out into the english channel.
Caisson units
are also produced in sizes up to 4 meter diameter.
Construction of the foundations required the sinking of eight 25m deep 9.9m
diameter caissons.
The boat then glides effortlessly into one of the water
filled caissons
where the doors close to form a watertight seal.
View down at the trip boat in the
other caisson.
Recently, this work has focussed on a novel foundation called a "
suction caisson
" .
These are
called suction caissons
and have been used for a number of projects in the oil and gas industry.
The barrage will be made from a series of
huge caissons
( concrete blocks that are common in underwater construction ).
Approaching the lift narrowboat crossing the aqueduct and heading for the left
hand caisson.
Caissons sunk
as break waters and prefabricated metal piers and roadways.
Inside the lift the edwin clark trip boat has just entered the
lower caisson.
Inside the lift the edwin clark trip boat has just
entered the lower caisson.
The
right caisson
is almost at the top now.
At chepstow the piers were large cast iron cylinders which themselves
formed the caissons, the air locks being fitted on top of them.
The word usage examples above have been gathered from various sources to reflect current and historical usage.
They do not represent the opinions of YourDictionary.com.