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Kinsale Main Drainage, Co. Cork

Projects > Civil Engineering (Marine & Coastal) Projects

KINSALE MAIN DRAINAGE,
Storm Holding Tank,
Co. Cork


 This contract involved the construction of a reinforced concrete
multi chambered storm retention tank and pumping station in
Kinsale Harbour.

This tank which was designed to manage surface water drainage
from the town at times of flooding and high sea water levels
required the construction of a cofferdam as part of the
temporary works. The cofferdam was sheet piled, excavated,
sealed and dewatered to allow the construction of the concrete
structure. In addition to the tank there was 75m of 750mm and
1650mm concrete pipe laid to tie the tank into the existing storm
systems. These large diameter pipelines were laid at invert
depths of almost 4.5m through urban environment in the heart of
the town. There were minor works also involved in the
completion of the project such as temporary road construction
and the restoration of the existing quay wall.

Upon completion the quay wall was extended around the new
tank and pumping station.

As the tank was constructed on a soft alluvium sea bed, rock
socketed concrete piles were installed below the tank to support
the weight of the tank when full during low tide conditions, and
to resist uplift of the tank when empty during high tide
conditions. These piles were designed and installed by L&M
Keating Ltd.

Upon completion of the piling the works area was enclosed in a
sheet pile coffer dam and de-watered.

However the existing storm water gravity drains continued to
discharge into the area and required management and
significant temporary works.

The reinforced concrete tank and pump chamber were
constructed within the de-watered coffer dam.

The exposed faces of the structure were clad in limestone
masonry.
Client Cork County Council,
County Hall,
Carrigrohane Rd.,
Cork
Value €750,000
L&M Keating Ltd, Kilmihil, Co. Clare. www.lmkeating.ie | info@lmkeating.ie
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