Commercial Diving
Underwater Construction, Inspections, Maintenance, Repairs, Demolition, Salvage by ADAS Certified Divers.
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Underwater Construction, Inspections, Maintenance, Repairs, Demolition, Salvage by ADAS Certified Divers.
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Marine Construction
Wharves, Jetty’s, Marinas, Seawalls, Moorings, Boat Ramps, Pontoons and more
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Wharves, Jetty’s, Marinas, Seawalls, Moorings, Boat Ramps, Pontoons and more
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Project Management
Project Management, Maintenance Programs, Reports, Budgeting, Site Inspections, Drafting and more
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Project Management, Maintenance Programs, Reports, Budgeting, Site Inspections, Drafting and more
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HDSA Civil Construction
Protective Coatings, Corrosion Control, Erosion Control Systems, Structural Steel Work, Sandstone Structures and more
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Protective Coatings, Corrosion Control, Erosion Control Systems, Structural Steel Work, Sandstone Structures and more
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Seawall Repairs
HDSA Group has refurbished and built many seawalls. This includes replacement of stone, repairing undermining with grout filled geofabric socks and repointing walls.
We also can install a new footing to existing walls to prevent structural failure.
Please see our Seawall Galleries:
Oatley Pleasure Grounds Seawall
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Featured Projects
HANSON CONCRETING - PYRMONT
Major Works & Ongoing Maintenance Contract
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