
2025年竣工 / 兵庫県南あわじ市 / 業務範囲:構造設計・工事監理
建築設計:HADA+たくと建築設計 / 構造設計:村田龍馬設計所
Hyogo, Japan 2025
Scope of work: Structural design and construction supervision
Architect: Kenji Hada (in collaboration with Mamoru Kamikawa)
Structural design: Ryoma Murata Building Studio
Photography: Naoya Takechi
日本有数の瓦産地である兵庫県淡路島の、瀬戸内海を望む丘の上に建つ住宅である。3連の瓦葺き切妻屋根が外観を特徴づけている。1階の約半分を占める土間空間が、大きな吹抜けによって2階とつながる空間構成のため、外壁に面する長さ10mに及ぶ吹抜けの耐風梁が構造設計上の課題となった。これに対して、耐風梁を鉄骨角パイプ(□-125×125)とし、中間に丸パイプのつなぎ梁(φ60.5)を設けることで、木造軸組の壁厚内に耐風梁を納める設計とした。
Situated on a hill overlooking the Seto Inland Sea, this residence stands on Awaji Island in Hyogo Prefecture—one of Japan’s foremost roof tile–producing regions. Its exterior identity is defined by a trio of gabled roofs clad in traditional tiles.
An expansive doma(earthen-floored) space occupies about half of the ground floor and opens vertically to the upper level through a generous double-height void. Structurally, the key challenge lay in designing the wind-resisting beam that spans 10 meters along the exterior wall of this open volume.
The solution was to employ a square steel tube (□-125×125) as the wind-resisting beam, supplemented by an orthogonal connecting steel pipe (φ60.5). This configuration allowed the wind-resisting member to be accommodated within the thickness of the timber-framed wall.












