Reference: Appendix B of Unified Standard for Acceptance of Construction Quality of Building Engineering.
Division of sub-division and sub-division of building ground engineering;
1, integral surface:
Base course: foundation soil, lime soil cushion, sand cushion and gravel cushion, gravel cushion and brick cushion, three-dimensional soil cushion and four-dimensional soil cushion, slag cushion, cement concrete cushion and ceramsite concrete cushion, leveling layer, isolation layer, filling layer and thermal insulation layer.
Surface course: cement concrete surface course, cement mortar surface course, terrazzo surface course, hardened wear-resistant surface course, oil-proof surface course, incombustible (explosion-proof) surface course, self-leveling surface course, coating surface course, plastic surface course and integral surface course of floor radiant heating.
2. Board surface
Base course: foundation soil, lime soil cushion, sand cushion and gravel cushion, gravel cushion and brick cushion, three-dimensional soil cushion and four-dimensional soil cushion, slag cushion, cement concrete cushion and ceramsite concrete cushion, leveling layer, isolation layer, filling layer and thermal insulation layer.
Surface course: brick surface course (ceramic mosaic, cylinder brick, ceramic floor tile and cement tile surface course), marble surface course, granite surface course, precast slab surface course (cement concrete slab, terrazzo slab and artificial slate surface course), stone surface course (strip stone and block stone surface course), plastic plate surface course, movable floor surface course, metal plate surface course, carpet surface course and floor heating surface course.
3, wood and bamboo surface
Base course: foundation soil, lime soil cushion, sand cushion and gravel cushion, gravel cushion and brick cushion, three-dimensional soil cushion and four-dimensional soil cushion, slag cushion, cement concrete cushion and ceramsite concrete cushion, leveling layer, isolation layer, filling layer and thermal insulation layer.
Surface course: solid wood floor, solid wood integrated floor, bamboo floor surface course (strip surface course), solid wood composite floor surface course (strip surface course), impregnated paper laminated wood floor surface course (strip surface course), cork floor surface course (strip surface course) and wood floor surface course for floor radiation heating.
Reference: Code for Acceptance of Construction Quality of Building Ground Engineering (GB50209-20 10)