Excavation

S11.5.9: Before applying any bedding, backfill or surfacing material, the receiving surface must be free from loose excavation material and loose supporting materials, and the area must be clear of debris and free from oil, grease, dust or any other visible contaminant.
S11.5.10: Edge preparation of the excavation must comply with S6.8 for flexible roads, S7.5 for rigid and modular roads and S8.6 for footpaths, footways and cycle tracks.
S11.5.11: All loose excavation material and the existing frame must be removed and the structure prepared to receive the new frame.
S11.5.12: All loose supporting materials e.g. proprietary packing materials, engineering bricks etc., must be removed.
S11.5.13: A suitable edge sealant and, where necessary, a primer must be applied to the frame and on the bedding material where concrete is used as the bedding material.