Case Studies

 

Gifu Kitagata Apartment Building Takahashi Wing
Kitagata, Motosu-gun, Gifu Prefecture, Japan

 

Notable Features
 
bullet Modular standardization
bullet Half-void slab system
bullet Half-circles ceiling system
bullet Use of wavy glass panels
bullet Use of moveable partitions and furniture
bullet Unique rhythmic pattern
bullet C&D waste minimization

Basic Information
 
bullet Location: Gifu, Japan 
bullet Structure : Reinforced Concrete
bullet Building Type: 10-Storey Public Housing Reconstruction
bullet Completion: March 1998 (1994-1998)
bullet Building Area: 639 m2
bullet Total Floor Area: 4,843 m2
bullet Architect: Akiko + Hirosi Takahashi / Workstation and Tsukasa Sekkei

Overview
 

The apartment building is part of a large scale public housing reconstruction project located about 15 minutes from Gifu City by car. Four women architects were selected under the coordination of Japanese architect Arata Isozaki to execute the projects. This linear Wing designed by architect Akiko and Hirosi Takahashi sits on the north-west part of the site where the idea for the overall layout of the development was to run the buildings around the perimeter.

 

Site Layout Plan

 

Design Concept and Principles
 

The Takahashi Wing housing units has been designed with a relatively shallow depth in which a half-void slab system has been employed. The resultant ceiling is composed of continuous series of half-circles giving the building a style of its own. Wavy glass panels are employed between the housing units and the boundary wall, avoiding the creation of a ‘light/dark’ hierarchy across the north- south living spaces. 

 

Half-circle structural slab

 
Units are designed with different room types, with division by movable partitions and movable furniture, allowing freedom in the determination of both the character and use of the room.
 

Unit Plans: 
Modularity and Partitions

 

   
Modular Standardization
 

The room type unit plans can be considered as a means of standardization, in which all spaces are based on co-ordinated dimensions. Although such a co-ordinated dimensioning is applied in a mid-rise linear apartment block, which imposes a different constraints and opportunities as oppose to Hong Kong residential towers, it shall be considered as a basic principles in building design.

The uses of movable partitions and movable furniture allow freedom of rearrangement of apartment layouts. The appropriateness of such a provision largely depends on the living style of the users, yet the wider application of the idea might contribute significantly to the design and construction of housing units in Hong Kong context. The internal layout with employed movable partitions allows adaptation of the apartment to new uses, new users, and changing family composition without resulting in generation of much C & D waste. The acceptability of movable partitioning depends mainly on the type of occupier, some of whom might even find it interesting. On the other hand, the fixed brick wall largely used as internal non-load bearing wall often requires the users to adapt their living style and pattern to the "designed" layout. If such a fixed layout can no longer be adapted to, the unit will usually be refurbished resulting in generation of additional C & D waste.

 

Slab System
 

The half-void slab system employed generates a pattern of continuous series of half-circles on the ceiling uniquely for the users of the building. Such a uniquely integrated pattern, which can also be seen from outside, creates a visual excitement and adds character for both the inside and outside. Some of the slabs are further extended to form the balconies of certain units in a rhythmical way generating an external pattern uniquely of its own. The pattern is further enriched by the light and shades cast from the structurally integrated balconies. The monolithic image of the building block is dominated by the rhythmic pattern and structural expression, and thus being dissolved.

 

Extended slabs form balcony, view from inside

Conclusion
 

It is clear from this building that the employment of coordinated dimensioning does not trade off the possible rhythmic pattern in modular building design. In addition, standardized design also does not trade off the adaptability of a space. Although each unit is standardized based on a coordinated dimension, the internal usage and character of all the units are varied. Each unit is being adapted to the style and preference of the user and such a preference shall or shall not be pre-determined is still debatable. However, it can be considered as a means of reducing C & D waste in the long run.

On the other hand, there is a potential of aesthetic expression inherent in the structural elements as illustrated in this built example. The structural elements can possibly be employed as a means of architectural expression and generate a character of its own along with the standardized design.

 

Reference
 

Teramatsu, Yasuhiro ed. JA Yearbook 1998: Competition Results. Japan: Japan Architect, 1999.

"Gifu Kitagata Apartments Second Phase." Shinkenchiku:2000 5 (May 2000): 93-109.

 
All images are cited from Japan Architect

 

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