The undertaker must carry out the reinstatement in accordance with one of the following methods and should endeavour to achieve the greatest degree of immediate permanent reinstatement. Reinstatement methods are listed in Table A2.10.
The excavation and concrete road slab must be reinstated to a permanent standard at the first visit. The bituminous overlay must not be laid until the cured road slab has achieved a compressive strength of ≥ 25 N/mm2.
In the interim period, the concrete road slab and overlay (if existing) can only be reinstated with a bound material. The interim surfacing must be a bound material to a thickness of 100 mm or 50 mm as shown in Figures A5.1 to A5.3.
On the second visit, all interim materials must be removed to the top of the sub-base and a permanent concrete road slab reinstated. The road slab must be in accordance with S7.3. Any overlay may be reinstated to an interim standard in accordance with the relevant requirements of S6.1.9 to S6.1.11.