{"format":"cadcraft-library-item","format_version":1,"uuid":"445fd1a5-9f7b-4896-a125-ddbf1374a4c9","version":1,"name":"Stair, straight","kind":"family","category":"families/family","description":"Generic family, 7 parameters. A stair made from a sketch. N1 and N2 are the treads in each flight; Steps and Rise follow from them and Height. Railings and the stairwell are not part of it.","maker":"","model":"","ifc":{"class":"IfcTypeProduct","predefined":"NOTDEFINED"},"plan":{"layers":[],"entities":[]},"body":null,"params":{},"family":{"format":"cadcraft-family","version":1,"key":"stair-straight","name":"Stair, straight","kind":"generic","host":"none","base":"","ifc":{"class":"IfcBuildingElementProxy"},"params":[{"key":"Width","kind":"length","value":914.4},{"key":"Tread","kind":"length","value":254},{"key":"Height","kind":"length","value":3000},{"key":"Thick","kind":"length","value":150},{"key":"N1","kind":"integer","value":15,"label":"Treads in the first flight"},{"key":"Steps","kind":"integer","value":16,"formula":"(N1 + 1)","label":"Risers"},{"key":"Rise","kind":"length","value":187.5,"formula":"(Height / Steps)","label":"Riser height"}],"solids":[{"id":"f1","name":"Treads, first flight","op":"box","style":"concrete","x0":"0","x1":"Tread","y0":"(-Width / 2)","y1":"(Width / 2)","z0":"(Rise - Thick)","z1":"Rise","array":{"count":"N1","dx":"Tread","dy":"0","dz":"Rise"}}],"booleans":[],"notes":"A stair made from a sketch. N1 and N2 are the treads in each flight; Steps and Rise follow from them and Height. Railings and the stairwell are not part of it."},"source_attrs":{},"license":{"id":"CC0-1.0","holder":"CadCraft","attribution":"“Stair, straight” by CadCraft, CC0 (https://creativecommons.org/publicdomain/zero/1.0/)","url":"https://creativecommons.org/publicdomain/zero/1.0/"},"provenance":{"library":"librarycraft","item":"445fd1a5-9f7b-4896-a125-ddbf1374a4c9","version":1,"sha256":"6ac416d6854581cd06db26ed15f46221f50b22eb61d3584733b463d7c360cdbb","source_file":"stair-straight.ccfamily.json","source_sha256":"e518e0dd6cfc58400db65aa2d5a34d70f3bd5662581aee9ac7c5783ff3afad3c","published_at":"2026-10-31T04:20:24Z"}}