19 Building materials (not of metal); prefabricated building materials as far as included in Class 019 consisting, in particular, entirely or predominantly out of mineral building materials such as cement concrete, plastic concrete and entirely or predominantly out of synthetic and natural materials such as plastic, rubber and rubber substitutes, earthenware, porcelain and glass for structural engineering, civil and underground engineering, hydraulic engineering, waste water engineering, road building, for pavement, runway, horticulture, landscaping, agricultural, swimming pool, sports ground, playground construction, for cellar, tunnel, bunker construction and energy supply engineering as well as for special purpose constructions for the chemical, machine and electrotechnical industries, for the DIY sector and particularly for facilities for collecting, discharging and supplying water, surface water, waste water and other fluids; pipes, pipe elements and gullies, line drainage, point drainage, ramp drainage, street and courtyard drains, bridge drains, shafts, inspection shafts and supply channels, rain water retention basins, storage containers, rain water storage containers, water storage containers for fire-fighting, sedimentation basins, troughs or retention basins, trapping boxes, box drains, pipe connections, down pipe boxes, manhole covers and top pieces for street drains, grates, grating, covers, perforated plates, closed covers for channels and gully parts as well as for inspection shafts, stable floor plates, dirt strainers and rakes, sand traps, tree protection grates and tree protection grating, edging pieces and curbstones, flagpole holders, prefabricated shuttering elements for concrete construction consisting entirely or predominantly of mineral building materials such as cement concrete, plastic concrete and entirely or predominantly out of synthetic and natural materials such as plastic, rubber and rubber substitute materials, earthenware, porcelain and glass; all aforesaid goods to the extent included in Class 019