Drives, paths and landscaping

10.2.7Materials

Materials shall be suitable for their intended use. Concrete shall be of a mix design which will achieve sufficient strength for its purpose and be sufficiently durable to remain unaffected by chemical or frost action.

Sub-base material should be type 1 to clause 803 Table 8/2, MCHW Volume I Series SHW 800.

Hot rolled and mastic asphalts and macadam should comply with relevant standards, including:

BS EN 13108-1‘Bituminous mixtures. Material specifications. Asphalt Concrete’.
BS EN 13108-4‘Bituminous mixtures. Material specifications. Hot Rolled Asphalt’.
BS EN 13108-5‘Bituminous mixtures. Material specifications. Stone Mastic Asphalt’.
PD 6691‘Guidance on the use of BS EN 13108’.
BS 594987‘Asphalt for roads and other paved areas’.

Aggregates used in asphalt and macadam mixtures and unbound aggregate (graded 15/20mm gravel) for surfacing should comply with relevant standards, including:

BS EN 13043‘Aggregates for bituminous mixtures and surface treatments for roads, airfields and other trafficked areas’.
PD 6682-2‘Guidance on the use of BS EN 13043’.
BS EN 13242‘Aggregates for unbound and hydraulically bound materials’.
PD 6682-6‘Guidance on the use of BS EN 13242’.

Blocks, slabs, pavers, edgings, etc. should comply with relevant standards, including:

BS EN 771‘Specification for masonry units’.
BS EN 1344‘Clay pavers. Requirements and test methods’.
BS EN 1339‘Concrete paving flags. Requirements and test methods’.
BS 7533‘Pavements constructed with clay, natural stone or concrete pavers’.

Topsoil and sub soil should be of a quality that will not present a hazard to users of the garden area. BS 3882 (Topsoil), BS 8601 (Subsoil) and the Contaminated Land Exposure Assessment (CLEA) guidelines provide advice on determining the suitability of topsoil and subsoil.