{"format":"cadcraft-library-item","format_version":1,"uuid":"cd33f0c0-4e7d-4417-93d0-aadbe09d6464","version":3,"name":"Ohio: Residential Code of Ohio (RCO), 2019 edition","kind":"regulation","category":"regulations/building","description":"Adopts IRC 2018 (Ohio Board of Building Standards, Department of Commerce; Ohio Adm. Code 4101:8). State amendments to the checked rules: riser height, tread depth. Amendments were researched for stairs, ceiling height, light and ventilation only; every other rule (room size, egress, escape openings, electrical, alarms) is the base code's. Entered 2026-10-27 (research confidence: high); not yet r…","maker":"","model":"","ifc":{"class":"IfcControl","predefined":"NOTDEFINED"},"plan":{"layers":[],"entities":[]},"body":null,"params":{},"regulation":{"format":"cadcraft-regulation-pack","version":1,"id":"us-oh","name":"Ohio: Residential Code of Ohio (RCO), 2019 edition","jurisdiction":{"country":"US","level":"state","region":"US-OH","name":"Ohio"},"base":"us-irc-2018","edition":"IRC 2018 as adopted, 2019-07-01","in_force":"2019-07-01","review":{"state":"draft","note":"Adopts IRC 2018 (Ohio Board of Building Standards, Department of Commerce; Ohio Adm. Code 4101:8). State amendments to the checked rules: riser height, tread depth. Amendments were researched for stairs, ceiling height, light and ventilation only; every other rule (room size, egress, escape openings, electrical, alarms) is the base code's. Entered 2026-10-27 (research confidence: high); not yet r…"},"authority":"adopted-law","source":{"name":"Ohio Board of Building Standards, Department of Commerce, Ohio Adm. Code 4101:8","url":"https://codes.ohio.gov/ohio-administrative-code/rule-4101:8-3-01","date":"2019-07-01","checked":"2026-10-27"},"maker":null,"price":null,"criteria":[],"tables":[],"rules":[{"id":"stair.riser.max","applies":"stair","op":"<=","unit":"mm","clause":"RCO R311.7.5.1","label":"Riser height","note":"State amendment.","value":209.55},{"id":"stair.tread.min","applies":"stair","op":">=","unit":"mm","clause":"RCO R311.7.5.2","label":"Tread depth","note":"State amendment.","value":228.6}]},"source_attrs":{},"license":{"id":"CC0-1.0","holder":"CadCraft","attribution":"“Ohio: Residential Code of Ohio (RCO), 2019 edition” by CadCraft (https://codes.ohio.gov/ohio-administrative-code/rule-4101:8-3-01), CC0 (https://creativecommons.org/publicdomain/zero/1.0/)","url":"https://creativecommons.org/publicdomain/zero/1.0/"},"provenance":{"library":"librarycraft","item":"cd33f0c0-4e7d-4417-93d0-aadbe09d6464","version":3,"sha256":"2690a8fb80bded481b35428ebbac7ed25c27f8ced77b71a2b33034cc977425fc","source_file":"us-oh.json","source_sha256":"59f12f42a2c8213dd04abed60f1280125f59cf1a8e71eaf6ac5a42a618be83ae","published_at":"2026-10-27T02:07:27Z"}}