Projects

vivian street fire and seismic upgrade

130 Vivian Street: Fire and Seismic Upgrade of Mixed-Use Multi Story Building

• Seven story multi use reinforced concrete frame building with post tension floors

• Located adjacent State Highway 1 in central city

• 320m3 new foundation beam

• 4 Steel K- frames 8.2m wide by 23m tall.

• Upgrades within existing building to meet fire code, including: adding sprinklers through out, smoke alarms, fire rating riser shaft.

• Site works

• Services isolations and re-instatement. Including new power mains and data feeds

• Occupied Building with multiple tenants

The project was won following a tender process, works commenced on site October 2016.
As the building has remained occupied through-out the works the first task on site was establishing a secure site and defined safe access for tenants.

The project has 2 main scopes of work. The first being Fire upgrade which involves installing a sprinkler system through out the building and upgrading the existing fire alarm system. This work has significant interface with tenants as we are working in occupied apartments and office areas. 

The Seismic upgrade works are the larger scope and involve the formation of a new 2.2m x 1.6m wide reinforced concrete perimeter foundation beam around the full building. This transfers the seismic loads imposed on the buildings 4 new structural  steel K-frames to the ground.

These works would be relatively simple on a new build but as the existing building occupies 90% of the site and is on a busy inner city corner, methodology, planning and staging are key to the successful delivery of this project. 

the terrace seismic upgrade

The Terrace - Office Building Seismic Upgrade

In January 2016 we completed the seismic upgrade and fit-out of this 14-level office building. The main strengthening work involved drilling over 4500 reinforcing dowels to connect the new reinforced concrete skin.

The subsequent fit-out included a commercial kitchen.  As the building was tenanted, work was undertaken on a floor by floor basis.

32-unit apartment building

Torrens Terrace Apartments

The contract to strengthen this 32-unit apartment building was won following an open tender process. 

Following award of the contract, the Wilson team worked with the client and engineer to redesign the foundations and eliminate the need to demolish sections of the building for piling rig access.

The final project involved the installation of heavy steel K-frames, plus new foundations and ground anchors within the central corridor.

In total over 100m3 of concrete and earth was excavated from inside the building using mini excavators and track barrows.  Over 31 ton of steel beams were carried into the building and 18,000kg of reinforcing was tied into the internal ground beams. 

Work was sequenced from the top down to allow the progressive hand back of apartments for refit.  

Heritage Building

Jackson Street Heritage Building

This two-story heritage building was being upgraded to 100% of the National Building Standards to allow the upper floors to be changed into apartments.

Seismic strengthening work included: jacketed ground anchors, insitu and sprayed concrete, plus structural steel.

As part of this project, the heritage brick and plaster façade on the front of the building were rebuilt to match the existing building.