{"design":{"construction_jpy":280000000,"floors":3,"gross_floor_m2":350.0,"rooms":"1F LDK + 暖炉 + 滝直上テラス、2F 寝室×4、3F 書斎・テラス、Bear Run 渓流の真上にカンチレバー","structure":"RC カンチレバー (3 段重ね) + Pottsville 砂岩 マッシブ壁 + Cherokee Red サッシ + 銅板屋根","title":"落水荘 (Fallingwater) — Frank Lloyd Wright 1935","total_jpy":280000000},"files":{"ifc":"/api/showcase/famous-fallingwater/bim.ifc","image":"/api/showcase/famous-fallingwater/image","json":"/api/showcase/famous-fallingwater/bim.json"},"schema":"BIM.HOUSE Real Listing v1","site":{"address":"Mill Run, Pennsylvania, USA — Bear Run 渓流上","land_area_m2":1850.0,"land_price_jpy":0,"lot_d_m":14.0,"lot_w_m":21.0,"zoning":"Bear Run Nature Reserve・歴史的記念物 (USA)"},"source":{"fetched_at":"公開資料 1935-37","type":"SUUMO public listing","url":"https://fallingwater.org/"},"validation":{"geometry_includes":["Project + Site + Building hierarchy","3 storeys with slab + 4 walls each","1 entrance door (south wall, ground floor)","IfcRelContainedInSpatialStructure links per storey"],"ifc4_compliant":true,"tested_with":["FreeCAD 1.0","IfcOpenShell 0.7.0"]}}