alphaville: roof on the hill

'roof on the hill' by alphaville in takarazuka, japan
all images courtesy alphaville
photographer: kai nakamura


kyoto-based architecture studio alphaville (kentaro takeguchi, asako yamamoto) has sent us images
of their newest project 'roof on the hill', a private residence in a new development site in takarazuka, japan.
working with the solid soil condition of the plot, the single storey design follows the natural slope of
the terrain by dividing the floor plan in stepped back intervals.



street elevation



approach


arranged on a 3m x 3m grid steel frame, the house features three terraced-back levels that climb
the topography of the site. a series of small steps connect each stage at different intervals to create
a meandering circulation route. private programs such as the bedroom, bathroom and children's room
are contained in box-like volumes while the interstitial space in between accommodates the communal
programs such as dining, kitchen and living area.



interior view


left in its exposed and corrugated form is an undulating roof that creates an artificial topography
of its own. featuring long slits at each fold, an abundant amount of natural daylight enters and
illuminates the interior space. the oscillating form also creates a contrasting element to the regularity
of the layout, creating a faceted and angled ceiling that plays off the linear division of space.



view from kitchen



dining space



between levels



ceiling form






view from the north



night view






site plan



floor plan
(1) garage
(2) entrance
(3) dining room
(4) kitchen
(5) living room
(6) study
(7) japanese room
(8) bedroom
(9) children's room
(10) bathroom



section



east elevation



west elevation



south elevation



north elevation



exploded axo


project info:

primary use: residence
building area: 99.87 m2
site area: 232.31 m2
structural system: steel structure