Next 21 Residential Building

Oliver Heckmann

Description

This building was intended as an experiment in spatial, technical, and conceptual strategies to explore the development of flexible apartment buildings able to react long-term to the changing preferences of residents. The basic principle was formed by the “Open Building” concept of the Dutch architect John Habraken in which a building is understood as a composite of two systems: the support system forming a stable and shared property and an infill system, which is individually owned and interchangeable. Here the concept was realized with a series of constituent subsystems: a skeletal structure based on a multi-layered grid, a modular facade system and technical infrastructure that can be easily renewed at any time.

U-shaped levels are laid out to enable the creation of completely different apartment types and sizes, and remain open to the neighboring buildings, thus providing room for green spaces. In contrast to the layouts of conventional apartment buildings, which need to be standardized in order to anticipate the potential demands of future users, the conditions here proved congenial to having 18 residential units designed by 13 different architects in direct contact with the future residents of each.

The individual designs are fundamentally different from one another. Some (apartment
a
, for example) are reminiscent of the spatial character of a single-family home: they are individually designed and comprised of two stories with wraparound facades. Others (
b
, for example) connect open living spaces with individual cabinet-like private rooms. And still others (
c
, for example) incorporate traditional Japanese elements such as sliding walls to create flexibility of use. The first unit conversions have successfully illustrated the ability of this open framework to incorporate changes.

Drawings

This browser does not support PDFs.Floor plan diagram, scale 1:500

This browser does not support PDFs.Axonometric view of the load-bearing structure as part of the support system

This browser does not support PDFs.Ground floor, 1:500

This browser does not support PDFs.Second floor, 1:500

This browser does not support PDFs.Fourth floor, 1:500

This browser does not support PDFs.Fifth floor, 1:500

This browser does not support PDFs.Sixth floor, 1:500

This browser does not support PDFs.Infill system: renovation phases of a unit on the 4th floor

This browser does not support PDFs.Third floor, scale 1:200

This browser does not support PDFs.Cross section, 1:500

This browser does not support PDFs.South elevation, 1:500

This browser does not support PDFs.West elevation, 1:500

This browser does not support PDFs.Axonometric view of the raised floors for technical installations, table-like structure within residential unit for mounting air-conditioning unit on suspended ceiling

Photos

Exterior view of green facade

Exterior view of building and surroundings


Originally published in: Oliver Heckmann, Friederike Schneider with Eric Zapel (eds.), Floor Plan Manual Housing, fifth revised and expanded edition, Birkhäuser, 2018.

Building Type Housing

Morphological Type Block Infill/Block Edge, Solitary/Big Box

Urban Context Urban Block Structure

Architect Sho-koh-sha Architectural and Urban Design Studio, Yositika Utida

Year 1993

Location Osaka

Country Japan

Geometric Organization Linear

Building Depth 11.8/13.9 m

Number of Units 18

Size of Units 1- to 5-room apts., incl. duplex units, approx. 58–187 m²

Height Mid-Rise (4 to 7 levels)

Load-Bearing Structure Column-and-Slab

Access Type Gallery/Street in the Air

Layout Corridor/Hallway, Duplex/Triplex, Flexible Plan, Inserted Cores, Living Room as Circulation Center

Outdoor Space of Apartment Balcony, Loggia, Roof Terrace, Winter Garden/Glazed Loggia

Parking Parking system on ground floor and below grade

New Building, Refurbishment or Extension New Building

Additional Information “Open Building": U-shaped, open skeletal frame construction (“support system”), individually designed, modifiable or replaceable residential units (“infill system”)
6 stories
facing in all directions

Program Participatory Housing Design

Address Shimizudanicho, Osaka
Japan

Map Link to Map