{"format":"cadcraft-library-item","format_version":1,"uuid":"fe886531-ca5d-433a-ac6c-364ca18bd468","version":2,"name":"Germany: Musterbauordnung (MBO) and DIN 18065:2020-08 Gebäudetreppen (model)","kind":"regulation","category":"regulations/building","description":"The national model: each Land's building code (LBO) broadly follows it. Stair values are DIN 18065 (from secondary sources; the standard is paywalled) for buildings with up to two dwellings and inside dwellings, and are not building law for houses in building classes 1 and 2; the ceiling rule does not apply to residential building classes 1 and 2 either. Not checked by this pack: stair headroom,…","maker":"","model":"","ifc":{"class":"IfcControl","predefined":"NOTDEFINED"},"plan":{"layers":[],"entities":[]},"body":null,"params":{},"regulation":{"format":"cadcraft-regulation-pack","version":1,"id":"de-mbo-din18065","name":"Germany: Musterbauordnung (MBO) and DIN 18065:2020-08 Gebäudetreppen (model)","jurisdiction":{"country":"DE","level":"country","region":"","name":"Germany"},"base":null,"edition":"Musterbauordnung (MBO) and DIN 18065:20…","in_force":null,"review":{"state":"unchecked","note":"The national model: each Land's building code (LBO) broadly follows it. Stair values are DIN 18065 (from secondary sources; the standard is paywalled) for buildings with up to two dwellings and inside dwellings, and are not building law for houses in building classes 1 and 2; the ceiling rule does not apply to residential building classes 1 and 2 either. Not checked by this pack: stair headroom,…"},"authority":"model-code","source":{"name":"Bauministerkonferenz (ARGEBAU); DIN; DIBt (MVV TB), Musterbauordnung (MBO) and DIN 18065:2020-08 Gebäudetreppen (model)","url":"https://www.bauministerkonferenz.de/verzeichnis.aspx?id=991&o=759O986O991","date":"2024-09-27","checked":"2026-10-27"},"maker":null,"price":null,"criteria":[],"tables":[],"rules":[{"id":"stair.riser.max","applies":"stair","op":"<=","unit":"mm","clause":"DIN 18065 Table 1","label":"Riser height","note":"Up to two dwellings / inside dwellings; 190 mm in other buildings. Stride rule 2s + a = 590-650 mm.","value":200},{"id":"stair.tread.min","applies":"stair","op":">=","unit":"mm","clause":"DIN 18065 Table 1","label":"Tread depth (going)","note":"Required stairs, up to two dwellings / inside dwellings; 260 mm in other buildings.","value":230},{"id":"stair.width.min","applies":"stair","op":">=","unit":"mm","clause":"DIN 18065 Table 1","label":"Stair width","note":"Usable width, up to two dwellings / inside dwellings; 1000 mm in other buildings.","value":800},{"id":"stair.rail.height","applies":"stair","op":"between","unit":"mm","clause":"DIN 18065 6.10.1","label":"Handrail height","note":"From secondary sources.","min":800,"max":1150},{"id":"room.ceiling.min","applies":"room","op":">=","unit":"mm","clause":"MBO § 47(1)","label":"Ceiling height","note":"Attic rooms 2.20 m over half the floor area. Does not apply to residential buildings of building classes 1 and 2.","value":2400},{"id":"room.light.min","applies":"room","op":">=","unit":"pct","clause":"MBO § 47(2)","label":"Glazing, share of floor area","note":"Window openings (structural size) at least 1/8 of the net floor area.","value":12.5}]},"source_attrs":{},"license":{"id":"CC0-1.0","holder":"CadCraft","attribution":"“Germany: Musterbauordnung (MBO) and DIN 18065:2020-08 Gebäudetreppen (model)” by CadCraft (https://www.bauministerkonferenz.de/verzeichnis.aspx?id=991&o=759O986O991), CC0 (https://creativecommons.org/publicdomain/zero/1.0/)","url":"https://creativecommons.org/publicdomain/zero/1.0/"},"provenance":{"library":"librarycraft","item":"fe886531-ca5d-433a-ac6c-364ca18bd468","version":2,"sha256":"4db8e5e92ce1e48627c8110bbf72957d6cba1f0924c4d85ba7822b1388fdfa60","source_file":"de-mbo-din18065.json","source_sha256":"d65b6bc772c0c88f4ac70c788dd4c3c66c08ad53982a5817bfbc4ed919a9bff8","published_at":"2026-10-27T02:07:28Z"}}