- S2.3.3
- Intervention is required where the mean level of edgings, channel blocks, surface boxes and ironware etc., do not coincide with the mean level of the adjacent surfaces, within ± 10 mm.
- S2.3.4
- For drainage fixtures, intervention is required where the feature differs from the mean level of the adjacent surfaces, within a tolerance of +0 mm to -15 mm.
- S2.3.5
- For pedestrian crossing points, intervention is required where the edge depression at the interface between the paving (including tactile paving) and the dropped kerb exceeds 6 mm over a continuous length of more than 100 mm in any direction.
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