Wedge House Puy-anan by Kiyoshi Sugimoto

Wedge House Puy-anan by Kiyoshi Sugimoto is a highly esteemed winner of the very prestigious 2025 A' Design Award nga Bronse in Disenyo sa Arkitektura, Gambalay ug Estruktura Competition Category.

BronseArkitektura· 2025

Wedge House Puy-anan

by Kiyoshi Sugimoto

Client: Masato Ikuta

A' Design Award nga Bronse Winner in Arkitektura Category

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Verified Award Winner

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Visit Site View at A' Design Award Press Release Award Badge

Colors

The Design

About Wedge House Puy-anan

Ang Wedge House usa ka tulo ka andana nga puy-anan nga gitukod sa usa ka pig-ot nga yuta nga adunay pig-ot ug patag nga dalisdis sa Ikeda City, Japan. Ang porma sa cross-section nga sama-sa-wedge nagpahimutang sa kinadak-ang andana sa taas ug sa kinagamyang andana sa ilalom sa yuta, aron walay dugang nga presyur nga ipahamtang sa daan nga retaining wall. Ang duha ka taas nga andana hinimo sa kahoy samtang ang basement hinimo sa reinforced concrete. Ang mga pader sa sidlakan ug kasadpan gitabonan sa silver coated steel plates nga nagsuporta sa cantilevered floor ug nagbahin sa panan-aw padulong sa habagatan. Ang living area sa ikaduhang andana naablihan padulong sa usa ka terrace nga adunay halapad nga talan-awon.

The Recognition

About the A' Design Award nga Bronse

Wedge House Puy-anan usa ka mananaog sa A' Design Award nga Bronse, usa ka labihan ka prestihiyoso nga pag-ila nga gihatag sa talagsaon nga mga disenyo nga gipaila sa pagkamamugnaon, kaabtik, ug kamatngon. Ang mga mananaog sa Bronse mga hanas kaayo ug makapahibulong nga mamugnaon nga mga artipakto nga nagpamatuod sa dakong kasinatian, imahinasyon, ug kaabtik sa ilang mga tigdesinyo. Gilauman nga ang Wedge House Puy-anan mahimong gipabilhan, gihangaan, ug gihigugma nga butang nga talagsaon ang pagkapropesyonal ug bag-o. Kini nga disenyo nga nakadaog og A' Design Award nga Bronse naglakip sa labing maayong mga praktis sa arte, siyensya, disenyo, ug teknolohiya ug maayo kaayo tungod sa pagtagad niini sa mga detalye. Wedge House Puy-anan nagtagbaw sa mga panginahanglan sa matahom nga paagi, nag-igo sa mga tinguha, nagbihag sa mga pagbati, ug nagdani sa pagkamausisaon.

Behind the Design

Press Kit

Credits, team members and technical details provided by the designer.

Unique Properties: The site has a nice view, but it is narrow and has a steep slope, and due to area regulations, the building coverage ratio is a strict 40%.
In order to meet the required area to comply with strict regulations, we adopted a three-story mixed structure with two floors above ground made of wood and one floor below ground made of reinforced concrete.
The building has a wedge-shaped shape, with the second floor, which has the best view, as the living space and the largest area, and the area decreases as you go to the lower floors to avoid applying force to the retaining wall.
Dimensions & Packaging: Total floor area 111.16㎡　Width 5560mm x Depth 11000mm x Height 10190mm
Tags: Slopingland structure protruding structure wedge Basement mountainside
Production Technology: The east and west walls are finished with silver galvalume steel plates, which support the cantilevered floor that protrudes from the basement, and at the same time serve to frame the view to the south.
The basement is a bedroom with a sense of security that feels like it's nestled on a slope. The first floor has a water area and a study with a view of the greenery of the park behind the deep eaves. From the sky terrace of the LDK on the 2nd floor, you can enjoy a panoramic view of the Osaka plains. This is a house where you can enjoy the three different slopes of Mt. Satsuki.
Design Challenge: Stable structural design with an underground shape that does not apply force to old retaining walls on a narrow, steeply sloped site, and a protruding structure for the wooden upper building.
Research: Research on stable structures with protruding shapes in wooden buildings
Inspiration: The site is located at the foot of Mt.Satsuki in Ikeda City, Osaka Prefecture, Japan. The site was narrow, and more than half of the site was on a steep slope.
Additionally, the site is located on an old, tall retaining wall, so the building had to be constructed in a way that would not put stress on the retaining wall.
Therefore, the building's cross-sectional shape is wedge-shaped, with the basement being the smallest and increasing as the floors rise.
Project Duration: Design for the project began in September 2022 at a site in Ikeda City, Osaka Prefecture, and was completed in June 2024.
Operation Flow: A basement with a shape that does not apply force to the old retaining wall, and a pop-out floor structure for the upper wooden building to maintain the required area.
Team Members: KIYOSHI SUGIMOTO
Image Credits: All photos and videos Hirofumi Imanishi