Building materials (non-metallic); non-metallic rigid pipes for building; asphalt, pitch and bitumen; non-metallic transportable buildings; alabaster, asbestos cement, concrete, binding agents for making briquettes; gypsum, potters' clay, earth for bricks; gravel; granite; calcareous stone; building stone; rubble; artificial stone; bricks; fire burrs; cement posts; fireclay; refractory construction materials, not of metal; mosaics for building; marble; wall claddings, not of metal, for building; coatings (building materials); sand, except foundry sand; sandstone for building; tiles, not of metal, for building; floor tiles, not of metal; paving slabs, not of metal; cement slabs; fireproof cement coatings; paving blocks, not of metal; mortar for building; cement; pantiles; clinker stone; concrete building elements; clinker ballast