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Vincent Street, Leederville

Structural Engineering

Project Type / Category
Commercial / Office
End Client
Coronada Investments
Architect
Meyer Shircore
Contractor
PACT Construction
Project Value
$12.3M
Project Location
297 Vincent Street, Leederville, Western Australia
Project Completion
December 2014
Value Engineering Solution
  • Water tight basement with no water proof membranes to wall or raft.
  • Fast construction using precast walls and BubbleDeck®.
  • Protection of adjacent masonry building using combination of soil grouting and cantilevered secant walls.
Unique Design Items
  • Basement below water table.
  • Close proximity to high voltage power lines.
  • Retention below adjacent a multi-storey masonry structure.

The five-storey development features open plan offices, an apartment on the top floor, a main lobby with two lifts and a basement car park.

Located on a challenging site, the basement was constructed almost entirely below the water table. A secant pile wall was constructed around the site perimeter, with dewatering being pumped into a temporary drainage basin in the adjacent site, with overflow to be pumped into the council drainage system. The basement walls and raft accommodated up to 3m of buoyancy pressure with no membrane required for either raft or wall systems - to achieve this, the team implemented a calcite concrete additive in conjunction with a reinforced concrete system (designed to the Liquid Retaining Structures code).

The superstructure was constructed primarily in precast, with precast walls and BubbleDeck® flooring systems resulting in fast and efficient construction on site.

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