Nidagravel: Typical specification

1:1 Sub-base
Nidagravel should be placed on a suitably compacted sub-base (see notes), with weed suppressant overlap laid underneath each following sheet.

1:2 Placing
Panels should be placed on a flat bed of blinding or sand, graded to suit the installation.

1:3 Filling
Gravel fill at a rate of 75 - 85 kg per sq. metre, should be placed into the honeycomb structure. The honeycomb structure should be overfilled to a depth of 10 - 20 mm above the top surface of the panels. Filling should take place from the access point inwards and mechanical or pedestrian traffic should only occur over filled panels. Nidagravel is suitable for use with all sizes of gravel up to 16 mm diameter.

1:4 Compacting
If required final consolidation can be aided by light compaction with a compaction plate.
Notes:
Sub-base substructure is dependant on the use to which the final surface is to experience. This can vary from compacted earth for very light foot access paths to 150 mm of type one sub base material, where regular vehicle traffic is anticipated. In general the same sub-base as would be specified for modular concrete paving, is applicable to Nidagravel.
Maintenance:
Nidagravel requires virtually no maintenance.
If the honeycombs cells become exposed simply top up with gravel.