For the purposes of defining the main material options, layer thickness, etc. required by this Code, A3 to A7 inclusive show the principal structural layers within cross-sections of typical reinstatement designs in each of the main surface categories. Materials are denoted by the symbols in Table A2.9.
Proprietary asphalt materials are not included in Table A2.9, given their specialist and limited application, an example being PMMA which may be used in footway surface courses and access surrounds to larger apparatus in roads. PMMA must comply with the requirements of A2.5.1 and A2.5.2.