{"format":"cadcraft-library-item","format_version":1,"uuid":"53fea98f-f95d-48c9-940d-e158ac81c63b","version":2,"name":"Chicago: Chicago Building Code (Municipal Code Title 14B)","kind":"regulation","category":"regulations/building","description":"The city's own code, not based on the IRC — the city's own code; values for dwellings in Groups R-3/R-5; handrail height not confirmed, so it is not checked (Chicago City Council; Chicago Department of Buildings; Municipal Code of Chicago Title 14B). Design criteria from up.codes (2019-04-10). Entered from the cited source on 2026-10-27 (research confidence: medium); not yet reviewed by a profess…","maker":"","model":"","ifc":{"class":"IfcControl","predefined":"NOTDEFINED"},"plan":{"layers":[],"entities":[]},"body":null,"params":{},"regulation":{"format":"cadcraft-regulation-pack","version":1,"id":"us-il-chicago","name":"Chicago: Chicago Building Code (Municipal Code Title 14B)","jurisdiction":{"country":"US","level":"city","region":"US-IL","name":"Chicago"},"base":null,"edition":"Chicago Building Code (Title 14B, own c…","in_force":null,"review":{"state":"draft","note":"The city's own code, not based on the IRC — the city's own code; values for dwellings in Groups R-3/R-5; handrail height not confirmed, so it is not checked (Chicago City Council; Chicago Department of Buildings; Municipal Code of Chicago Title 14B). Design criteria from up.codes (2019-04-10). Entered from the cited source on 2026-10-27 (research confidence: medium); not yet reviewed by a profess…"},"authority":"adopted-law","source":{"name":"Chicago City Council; Chicago Department of Buildings, Municipal Code of Chicago Title 14B","url":"https://codelibrary.amlegal.com/codes/chicago/latest/chicago_il/0-0-0-2662022","date":"2019-04-10","checked":"2026-10-27"},"maker":null,"price":null,"criteria":{"ground_snow_load":{"text":"25 psf (14B-16-1608.2)","value":25,"unit":"psf"},"wind_speed":{"text":"107 mph, Risk Category II (14B-16-1609)","value":107,"unit":"mph"},"frost_depth":{"text":"42 in below final grade (14B-18-1809.5)","value":1066.8,"unit":"mm"},"climate_zone":{"text":"5A (IECC county list)"}},"tables":[],"rules":[{"id":"stair.riser.max","applies":"stair","op":"<=","unit":"mm","clause":"14B-10 1011.5.2 Exc. 3","label":"Riser height","note":"R-3/R-5.","value":203.2},{"id":"stair.tread.min","applies":"stair","op":">=","unit":"mm","clause":"14B-10 1011.5.2 Exc. 3","label":"Tread depth","note":"R-3/R-5; nosing required under 10 in.","value":228.6},{"id":"stair.width.min","applies":"stair","op":">=","unit":"mm","clause":"14B-10 1011.2 Exc. 1","label":"Stair width","note":"Occupant load under 50.","value":914.4},{"id":"stair.headroom.min","applies":"stair","op":">=","unit":"mm","clause":"14B-10 1011.3 Exc. 2","label":"Stair headroom","note":"R-3/R-5.","value":2032},{"id":"room.ceiling.min","applies":"room","op":">=","unit":"mm","clause":"14B-12 1207.2 Exc. 2","label":"Ceiling height","note":"Habitable spaces in Group R dwelling units.","value":2133.6},{"id":"room.light.min","applies":"room","op":">=","unit":"pct","clause":"14B-12 1204.2.1","label":"Glazing, share of floor area","note":"","value":8},{"id":"room.vent.min","applies":"room","op":">=","unit":"pct","clause":"14B-12 1202.5.1","label":"Openable area, share of floor area","note":"","value":4}]},"source_attrs":{},"license":{"id":"CC0-1.0","holder":"CadCraft","attribution":"“Chicago: Chicago Building Code (Municipal Code Title 14B)” by CadCraft (https://codelibrary.amlegal.com/codes/chicago/latest/chicago_il/0-0-0-2662022), CC0 (https://creativecommons.org/publicdomain/zero/1.0/)","url":"https://creativecommons.org/publicdomain/zero/1.0/"},"provenance":{"library":"librarycraft","item":"53fea98f-f95d-48c9-940d-e158ac81c63b","version":2,"sha256":"10b786c37626b2438ffa4e78de489a7aedd1415446f6321bd54d4c3135e8e3c4","source_file":"us-il-chicago.json","source_sha256":"d01ba65d1e2b04799cbc3f74d61450ef3e6d3a2b123494750c0cff48cf98f92c","published_at":"2026-10-27T02:07:27Z"}}