To ensure you get the best experience, this website uses cookies.
Sub-base reinstatement (S7.2)
General
- S7.2.1
- In a rigid road, the sub-base is deemed to be any layer of imported granular or HBM immediately below the base of the concrete road slab. Where such a sub-base exists, a similar or equivalent material must be laid to match the existing thickness subject to a minimum thickness of 150 mm.
- S7.2.2
- Permitted options as shown in A5 are subject to the following exceptions:
Small openings and narrow trenches
- S7.2.3
- A CBGM base may also be used as sub-base of 150 mm thickness in small openings and narrow trenches regardless of whether the existing sub-base is cement bound.
