Non-metallic composite materials for use in construction; Non-metallic construction materials; Reinforcement Non-metallic materials for construction; Non-metallic materials for use in building construction; Building materials made of glass fibres; Non-metallic rigid pipes; Building materials of concrete reinforced with plastics and glass fibres; Fibre-reinforced structures and materials; Planar panels made of fibre-reinforced plastic; Reinforcing fibres, not of metal for building