HOWTH HARBOUR DEVELOPMENT & FISHERY CENTRE

The Work comprised the following operations:

1. The reclamation of 6 acres of foreshore by means of dredging and pumping ashore 70,000m3 of sand contained within a rock armour revetment.

2. Construction of a temporary bund across part of the harbour using 360 tonnes of Larssen 3 sheet piling and gravel fill. The enclosed area was dewatered, for quay construction in the dry, by means of 4 No. 10" diameter electrical pumps working 24 hours a day over a 20-month period.

3. Construction of a temporary bund, enclosing the area for the Yacht Marina, for the excavation of 66,000m3 of soft material and 40,000m3 of rock in the dry.

4. A further 25,000m3 of soft material and 35,000m3 of rock was removed at the harbour entrance by underwater blasting and dredging.

5. A new quay wall, 700m long, was constructed part insitu (in the dry) and part in precast units placed underwater by a team of divers.

6. The following breakwaters were constructed using 4-6 tonne rock armour:
(a) Trawler pier breakwater 400m long.
(b) Marina breakwater 200m long.
(c) East and West harbour entrances over a distance of 715m.

In addition to this approximately 20,000m2 or rock revetment was installed.