One9 Apartment Tower Constructed in Only Five Days

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The One9 building, a 9-floor apartment building was recently built in Melbourne, Australia in just five days. This was possible because the parts needed to construct the One9 building were manufactured off site, though the builders aren’t really calling it modular, since none of the modules are standard or fixed.

The One9 apartment is comprised of a total of 34 one-bedroom and two-bedroom units. The construction process was based on Hickory Group’s UB (Unitized Building) system, which was created by architect Nonda Katsalidis. This is the highest building the group has constructed until now, though they are sure much taller buildings could also easily be built using this method. Their building method is currently being specified on buildings up to 70 storeys.

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The One9 apartment is comprised of a total of 34 one-bedroom and two-bedroom units. The construction process was based on Hickory Group’s UB (Unitized Building) system, which was created by architect Nonda Katsalidis. This is the highest building the group has constructed until now, though they are sure much taller buildings could also easily be built using this method. Their building method is currently being specified on buildings up to 70 storeys.

A modular apartment tower that can be erected in less than a week is impressive enough, but building One9 also employs a number of environmentally sustainable features that would alone make it incredibly appealing.

The units in the building are all fitted with double glazed windows that offer superior thermal protection and acoustic performance. The building is also equipped with a grey water recycling system. There is also a rainwater harvesting system in place. Rooftop mounted solar panels provide enough energy to heat the water used up by the residents, while the building is also equipped with a H.W.S system that provides highly efficient water circulation. Energy efficient lighting is installed throughout the building, to conserve energy expenditure. The One9 building also has a 6 Star energy rating.

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In am effort to even further reduce the environmental footprint, residents are encouraged to seek alternative transportation methods, such as cycling. To this end, the building has 34 secure bicycle parking spots, as well as a unique and exclusive GreenShareCar, which is an economical, green and easy alternative to car ownership for the residents.

Here is a video of the construction process:

hall st from Edward Henderson on Vimeo.


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  • John C Hansen. LEED AP

    I Believe That The Construction Portion Of This Project Schedule Was More than Five Days
    I am sure you actually know how long it took from the day that the project manager scheduled the excavator till the day that the city building inspector passed the last unit and the entire building for occupancy. It is very likely that the actual construction started more than five days before the cleaning crew swept the floors of the units for the move-in of the apartments. The service tower is built differently than the dwelling units and it is built from reinforced concrete. I suspect that it took more than 5 days just for the tower. Can you tell us please from the day the excavators began digging the foundation just how long it really took to complete this building?
    And how long did the modules take to assemble in the factory? How long were they in storage before the last one was shipped and set? Why did this story avoid any discussion of the factory construction cycle for the modules?
    This is not journalism, but simply promotional hyperbole.

    • ESB

      …and one other point: the service tower could’ve been built using precast panels or fully assembled precast modular units. It’s the future of construction.

    • ESB

      John: Of course the site prep work took longer. This article isn’t about a new rapid site work technology. The significance of the accomplishment is that the finished envelope was assembled onsite in only five days. That’s a fraction of the time it would’ve taken a a labor intensive conventional construction crew to erect the structure and complete the interior finish work. Obsolete conventional building methods require site work to be completed before envelope assembly begins. The modules for this project were built concurrent with site work in a controlled environment, immune to weather delays. This technique saves tons of time, money, labor, wasted materials, injuries, etc., etc., etc.

  • cosmicmariner

    Cost/sq ft of UBs vs conventional construction? Please share actual numbers for the One9 project.

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  • Steven Gregory

    This is very exciting. I live in Denver where the building boom has often tied up street and sidewalk access for months, negatively impacting small local businesses and inconveniencing nearby residents. Central Denver is a hallmark of “infill” development. This building method seems perfect for erecting residential and office spaces in small available spaces between existing buildings, where the possibilities are remarkable.

  • Steven Gregory

    This is very exciting. I live in Denver where the building boom has often tied up street and sidewalk access for months, negatively impacting small local businesses and inconveniencing nearby residents. Central Denver is a hallmark of “infill” development. This building method seems perfect for erecting residential and office spaces in small available spaces between existing buildings, where the possibilities are remarkable.

  • Steven Gregory

    This is very exciting. I live in Denver where the building boom has often tied up street and sidewalk access for months, negatively impacting small local businesses and inconveniencing nearby residents. Central Denver is a hallmark of “infill” development. This building method seems perfect for erecting residential and office spaces in small available spaces between existing buildings, where the possibilities are remarkable.

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