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Sumit Singhal
Sumit Singhal
Sumit Singhal loves modern architecture. He comes from a family of builders who have built more than 20 projects in the last ten years near Delhi in India. He has recently started writing about the architectural projects that catch his imagination.

Renovation of “KANBAN-style” in Tokyo, Japan by REI MITSUI ARCHITECTS

 
August 25th, 2016 by Sumit Singhal

Article source: REI MITSUI ARCHITECTS

Renovation of”KANBAN-style” architecture,remaining at Nihonbashi.

*KANBAN-style; Billboard architecture, built in the early Showa period. Typically the ground floor is served as retail space, with displaying windows at the storefront.

Image Courtesy © REI MITSUI ARCHITECTS

Image Courtesy © REI MITSUI ARCHITECTS

  • Architects: REI MITSUI ARCHITECTS
  • Project: Renovation of “KANBAN-style”
  • Location: Nihonbashi, Tokyo, Japan
  • Software used: Rhinoceros and Grasshopper

Image Courtesy © REI MITSUI ARCHITECTS

Image Courtesy © REI MITSUI ARCHITECTS

The client’s request was simple. First, to keep the facade of the Billboard architecture. Second, to enforce seismic retrofit to resist earthquakes.

There was a tailor shop closed for over ten years. The existing building was almost abandoned, and the damage was disastrous. Although it seemed impossible, the client strongly wished for the building to remain. We decided to lift-up the complete building, and reconstruct the whole foundation and damaged elements.

Image Courtesy © REI MITSUI ARCHITECTS

Image Courtesy © REI MITSUI ARCHITECTS

Image Courtesy © REI MITSUI ARCHITECTS

Image Courtesy © REI MITSUI ARCHITECTS

There was no earthquake resisting elements at ground floor. If we chosen ordinary way of reinforcement, such as: -bearing wall or brace-, it was impossible to keep the original facade with an open storefront.

We applied an arch-frame made of Ductile Cast Iron as earthquake resisting elements not to disturb the facade.

Image Courtesy © REI MITSUI ARCHITECTS

Image Courtesy © REI MITSUI ARCHITECTS

Image Courtesy © REI MITSUI ARCHITECTS

Image Courtesy © REI MITSUI ARCHITECTS

Its woven likes shape comes from structural analysis. The diameter of each stripes transforms smoothly to follow structural internal stress.

Casting was the most efficient way to produce numerous parts, especially when its shape is complicated or decorative. Furthermore, of its rough and warm texture, Cast Iron suited the existing old timber structure.

Image Courtesy © REI MITSUI ARCHITECTS

Image Courtesy © REI MITSUI ARCHITECTS

Image Courtesy © REI MITSUI ARCHITECTS

Image Courtesy © REI MITSUI ARCHITECTS

Although it is the Cast Iron, it is very light, because of its extremely thin and light frame by structural analysis with the 3D parametric software (Grasshopper).

The weight of the cast iron frame is only 55 kilograms, so it is possible to assemble by manpower.

Image Courtesy © REI MITSUI ARCHITECTS

Image Courtesy © REI MITSUI ARCHITECTS

Image Courtesy © REI MITSUI ARCHITECTS

Image Courtesy © REI MITSUI ARCHITECTS

Image Courtesy © REI MITSUI ARCHITECTS

Image Courtesy © REI MITSUI ARCHITECTS

Image Courtesy © REI MITSUI ARCHITECTS

Image Courtesy © REI MITSUI ARCHITECTS

Image Courtesy © REI MITSUI ARCHITECTS

Image Courtesy © REI MITSUI ARCHITECTS

Image Courtesy © REI MITSUI ARCHITECTS

Image Courtesy © REI MITSUI ARCHITECTS

Image Courtesy © REI MITSUI ARCHITECTS

Image Courtesy © REI MITSUI ARCHITECTS

Image Courtesy © REI MITSUI ARCHITECTS

Image Courtesy © REI MITSUI ARCHITECTS

Image Courtesy © REI MITSUI ARCHITECTS

Image Courtesy © REI MITSUI ARCHITECTS

Image Courtesy © REI MITSUI ARCHITECTS

Image Courtesy © REI MITSUI ARCHITECTS

Image Courtesy © REI MITSUI ARCHITECTS

Image Courtesy © REI MITSUI ARCHITECTS

Image Courtesy © REI MITSUI ARCHITECTS

Image Courtesy © REI MITSUI ARCHITECTS

Image Courtesy © REI MITSUI ARCHITECTS

Image Courtesy © REI MITSUI ARCHITECTS

Image Courtesy © REI MITSUI ARCHITECTS

Image Courtesy © REI MITSUI ARCHITECTS

Image Courtesy © REI MITSUI ARCHITECTS

Image Courtesy © REI MITSUI ARCHITECTS

Image Courtesy © REI MITSUI ARCHITECTS

Image Courtesy © REI MITSUI ARCHITECTS

Image Courtesy © REI MITSUI ARCHITECTS

Image Courtesy © REI MITSUI ARCHITECTS

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Categories: Building, Grasshopper, Rhinoceros

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