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One Jackson Square Lobby
One Jackson Square Lobby
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Other Projects by SITU Fabrication
One Jackson Square Lobby
Firm
YEAR
2009
Situ Fabrication provided a range of services from preliminary design consulting to fabrication and construction administration for the lobby of One Jackson Square. The 11-story residential building designed by KPF architects consists of a series of undulating bands of glass stacked one upon the other. At street level the
flowing geometry continues into the interior forming a 220’ long doubly curved bamboo wall.
The transition between exterior and interior is defined by perforations in the wall that gradually decrease in number as one moves closer to the entry doors. Inside, the fluid geometry defines a cavernous passageway that ripples outward in areas to form shelves and benches. The bamboo wall is made of 64 unique panels that are 13’ tall and vary
in width, each separated by a 1/4” polished aluminum reveal. Each panel
consists of 180 layers of bamboo plywood contours that are CNC milled
and then laminated. Certain panels are then re-milled using a
3-axis CNC router to achieve a continuous 3-dimensional surface.
Finished panels weigh between 300-500 lbs each and are supported on steel
posts at each vertical seam.
Situ Fabrication began working with KPF in early 2007 doing material studies
and mockups to develop a suitable fabrication strategy. Initial studies
examined the effects of stacking wood in different ways using a variety of wood
species as well as other materials. These studies informed the
development of the geometry, defining its parameters and leading to the
introduction of double curvature. A number of mockups were produced to
test specific production processes as well as clarify details such as the
curved reveals. Once an appropriate system was designed, Situ Fabrication proceeded with the production phase.
Incorporated into the wall are a number of elements, such as the entry
and vestibule doors, service doors, elevators, and a curved glass partition.
Coordinating with these and other trades such as HVAC and plumbing, while
maintaining continuity in the geometry, required a high degree of precision.
An additional challenge was the fact that production was to begin long
before many details had been finalized. To accommodate this information
gap, a digital production workflow was developed that connected each step in
the creation of fabrication data back to the original 3D surface geometry. This
allowed for changes in certain parameters such as local curvature,
panelization, connection details, and reveal conditions to be propagated down
through the entire production chain. Fabrication data such as 2D
cutsheets, 3D solid models, and CNC machine code could all be quickly
updated by editing a single parametric model.
The fast-track nature of the project required considerable coordination
and organization in order to ensure project delivery on schedule. The
transportation and installation sequence was especially critical as it overlapped
with the production phase. As part of
its construction administration services, Situ Fabrication was engaged in daily
on-site installation supervision while at the same time making adjustments to
the parametric model to finalize panel details in other areas of the lobby.
Installation was completed in four weeks with no delays or major
complications.
flowing geometry continues into the interior forming a 220’ long doubly curved bamboo wall.
The transition between exterior and interior is defined by perforations in the wall that gradually decrease in number as one moves closer to the entry doors. Inside, the fluid geometry defines a cavernous passageway that ripples outward in areas to form shelves and benches. The bamboo wall is made of 64 unique panels that are 13’ tall and vary
in width, each separated by a 1/4” polished aluminum reveal. Each panel
consists of 180 layers of bamboo plywood contours that are CNC milled
and then laminated. Certain panels are then re-milled using a
3-axis CNC router to achieve a continuous 3-dimensional surface.
Finished panels weigh between 300-500 lbs each and are supported on steel
posts at each vertical seam.
Situ Fabrication began working with KPF in early 2007 doing material studies
and mockups to develop a suitable fabrication strategy. Initial studies
examined the effects of stacking wood in different ways using a variety of wood
species as well as other materials. These studies informed the
development of the geometry, defining its parameters and leading to the
introduction of double curvature. A number of mockups were produced to
test specific production processes as well as clarify details such as the
curved reveals. Once an appropriate system was designed, Situ Fabrication proceeded with the production phase.
Incorporated into the wall are a number of elements, such as the entry
and vestibule doors, service doors, elevators, and a curved glass partition.
Coordinating with these and other trades such as HVAC and plumbing, while
maintaining continuity in the geometry, required a high degree of precision.
An additional challenge was the fact that production was to begin long
before many details had been finalized. To accommodate this information
gap, a digital production workflow was developed that connected each step in
the creation of fabrication data back to the original 3D surface geometry. This
allowed for changes in certain parameters such as local curvature,
panelization, connection details, and reveal conditions to be propagated down
through the entire production chain. Fabrication data such as 2D
cutsheets, 3D solid models, and CNC machine code could all be quickly
updated by editing a single parametric model.
The fast-track nature of the project required considerable coordination
and organization in order to ensure project delivery on schedule. The
transportation and installation sequence was especially critical as it overlapped
with the production phase. As part of
its construction administration services, Situ Fabrication was engaged in daily
on-site installation supervision while at the same time making adjustments to
the parametric model to finalize panel details in other areas of the lobby.
Installation was completed in four weeks with no delays or major
complications.
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