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Floating apartmentcomplex Citadel
Floating apartmentcomplex Citadel
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Other Projects by Waterstudio.NL
Floating apartmentcomplex Citadel
Citadel
Client: ONW/BNG Architect: Koen Olthuis
- Waterstudio.NL
Start Construction: March 2011 Location: Project The New Water, city of Westland, The Netherlands Project: Floating apartment building – 60 units Depth: 9 feet Height: 40 feet Platform: 240 x 420 feet
Project Description
The Dutch and water have always been in a love &
hate relationship. Fighting the water in the country but also using the
sea’s infrastructure for international
trade. In Holland in the city of Westland, Waterstudio is designing now a
project that is contributing on a new relationship with the water. Not one of living next to the water but living
on water. The Citadel is Europe’s first floating apartment building. Citadel means fortress for protecting a town.
It’s walls are designed to be the last line of defense when “the enemy” breach
the other components of the fortification system.
Depolderising Holland has as many as 3500 polders which are below
sea level and kept dry by pumping water out 24/7. The citadel is part of an
urban development with 1200 houses that will be built in a depolderised
zone, called the New Water . The new water is a polder that will be
deliberately filled with water after a few centuries artificially dry period. The
depolderising done to protect other surrounding polders for flood during times
of heavy rainfall. The only way to make such a project financial feasible is buying out the existing houses and
building and selling new houses adapted to water fluctuations. DesignThe toolbox of floating developments in Holland is
still not so large, floating houses, villas are normal, but concepts with high
density are not available. The Citadel consists of 60 units which makes it the first
floating development with more than 30 housing units/acre water. This
relatively high density leaves more open water surrounding the building. The
floating building is a composition of 180 modular elements around a courtyard
on top of a floating concrete caisson foundation. All the apartments have waterview
and most of them have a berthing place for a small boat. The Citadel will be
projected on the middle of the water with a floating road for connection with
the shore. Fire trucks, ambulances and inhabitants can drive up to, or even in
the building. Comfort
The comfort level for this development is the same as
in for instance a high rise building. You will not feel any movement. This is
because of the dimensions. The building is made of lightweight construction but
special care is been given to the lowest possible noise level. The same
standards as used for normal land base dwelling.
The floating foundation is a large and heavy concrete
caisson that will house the Citadels car park. Common technology but custom
engineered for the dimensions of approximately 240 x 420 feet and 9 feet high
with 1 feet thick walls. Construction of the building will be done in a
temporary dry dock on location. The actual depth of the water after
depolderizing would be 6 feet while 12 feet of depth is needed. For that the
construction site will be digged out which will create space for the 9 feet of
depth of the floating construction. When the building is completed the pumps
will stop and the site will flood. While being flooded the building will start to
float. Sustainability Sustainability is a focus point for the
principal of the development. The Citadel has as first floating apartment
building the possibility to be a benchmark for floating urban
development. The apartment building is surrounded by greenhouses, the
interaction between the energy management of the greenhouses and the project is
under investigation. Also water cooling by the exchange of heat by
pumping water through the building floors is an option. The facade of the
building is from aluminium panels. Those cost a bit more energy to produce but
they have a very long lifespan and less maintenance on this water location. The
energy consumption over the total lifespan will be 25% less than a conventional
building on land.
With more than 50 roof terraces this project is a
challenge for green roof designers to come up with lightweight green roofs that
add to the climate control of the building. Top end project In the new water a mix of archetypes with different
prizes are being developed. Being a semi-governmental development project is
serves a social economical an ecological purposes. The citadel is at the high
end of the range of prizes this means that buyers for the citadel are high
demanding. This is answered by an architecture in which each unit has a
different floor plan and outside space. The maisonettes in the apartment
building open the possibility for a rich variety of double layered outdoor
spaces. The construction of the houses is engineered in such a way every client
can design his own personal floor plan within the determined shapes. Future The citadel project is the first of 6 floating
apartment buildings in the New Water project. When finished this project will
be a reference project for floating developments in waterfront cities
worldwide. It is not the architecture but the sustainability, technology and
density that opens new possibilities for developing beyond the waterfront
Client: ONW/BNG Architect: Koen Olthuis
- Waterstudio.NL
Start Construction: March 2011 Location: Project The New Water, city of Westland, The Netherlands Project: Floating apartment building – 60 units Depth: 9 feet Height: 40 feet Platform: 240 x 420 feet
Project Description
The Dutch and water have always been in a love &
hate relationship. Fighting the water in the country but also using the
sea’s infrastructure for international
trade. In Holland in the city of Westland, Waterstudio is designing now a
project that is contributing on a new relationship with the water. Not one of living next to the water but living
on water. The Citadel is Europe’s first floating apartment building. Citadel means fortress for protecting a town.
It’s walls are designed to be the last line of defense when “the enemy” breach
the other components of the fortification system.
Depolderising Holland has as many as 3500 polders which are below
sea level and kept dry by pumping water out 24/7. The citadel is part of an
urban development with 1200 houses that will be built in a depolderised
zone, called the New Water . The new water is a polder that will be
deliberately filled with water after a few centuries artificially dry period. The
depolderising done to protect other surrounding polders for flood during times
of heavy rainfall. The only way to make such a project financial feasible is buying out the existing houses and
building and selling new houses adapted to water fluctuations. DesignThe toolbox of floating developments in Holland is
still not so large, floating houses, villas are normal, but concepts with high
density are not available. The Citadel consists of 60 units which makes it the first
floating development with more than 30 housing units/acre water. This
relatively high density leaves more open water surrounding the building. The
floating building is a composition of 180 modular elements around a courtyard
on top of a floating concrete caisson foundation. All the apartments have waterview
and most of them have a berthing place for a small boat. The Citadel will be
projected on the middle of the water with a floating road for connection with
the shore. Fire trucks, ambulances and inhabitants can drive up to, or even in
the building. Comfort
The comfort level for this development is the same as
in for instance a high rise building. You will not feel any movement. This is
because of the dimensions. The building is made of lightweight construction but
special care is been given to the lowest possible noise level. The same
standards as used for normal land base dwelling.
The floating foundation is a large and heavy concrete
caisson that will house the Citadels car park. Common technology but custom
engineered for the dimensions of approximately 240 x 420 feet and 9 feet high
with 1 feet thick walls. Construction of the building will be done in a
temporary dry dock on location. The actual depth of the water after
depolderizing would be 6 feet while 12 feet of depth is needed. For that the
construction site will be digged out which will create space for the 9 feet of
depth of the floating construction. When the building is completed the pumps
will stop and the site will flood. While being flooded the building will start to
float. Sustainability Sustainability is a focus point for the
principal of the development. The Citadel has as first floating apartment
building the possibility to be a benchmark for floating urban
development. The apartment building is surrounded by greenhouses, the
interaction between the energy management of the greenhouses and the project is
under investigation. Also water cooling by the exchange of heat by
pumping water through the building floors is an option. The facade of the
building is from aluminium panels. Those cost a bit more energy to produce but
they have a very long lifespan and less maintenance on this water location. The
energy consumption over the total lifespan will be 25% less than a conventional
building on land.
With more than 50 roof terraces this project is a
challenge for green roof designers to come up with lightweight green roofs that
add to the climate control of the building. Top end project In the new water a mix of archetypes with different
prizes are being developed. Being a semi-governmental development project is
serves a social economical an ecological purposes. The citadel is at the high
end of the range of prizes this means that buyers for the citadel are high
demanding. This is answered by an architecture in which each unit has a
different floor plan and outside space. The maisonettes in the apartment
building open the possibility for a rich variety of double layered outdoor
spaces. The construction of the houses is engineered in such a way every client
can design his own personal floor plan within the determined shapes. Future The citadel project is the first of 6 floating
apartment buildings in the New Water project. When finished this project will
be a reference project for floating developments in waterfront cities
worldwide. It is not the architecture but the sustainability, technology and
density that opens new possibilities for developing beyond the waterfront
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