ONLINE VERSIONStairs and laddersK1 See paras 1.5–1.10 25mm max. 25mm max.overlap overlap60° min.Diagram 1.2 Examples of suitable tread profilesHeadroom for stairsFor all buildings1.11 On the access between levels, provide the minimum headroom shown in Diagram 1.3. See para 1.11 At leastMinimum2mheadroomAt least2mAt least2mLandingPitch lineFlightLandingDiagram 1.3 Minimum headroomFor buildings other than dwellings and for common access areas in buildings that contain flats1.12 Provide all means of escape routes with a minimum clear headroom of 2m, except in doorways.Building Regulations 2010 Approved Docu Approved Docu Approved Docu Approved Document K, 2013 edition 7ONLINE VERSIONONLINE VERSIONONLINE VERSION