Of great importance is the integrated use of raw materials, on a wide scale, carried out at many enterprises of building materials; The use of waste of asbestos industry and raw materials from cement plants as non -metallic materials, for the production of limestone flour, etc. D.; the use of waste rubber and, in particular, car tires for the manufacture of roofing and waterproofing materials. Also, high -quality components for railings help create a durable and reliable product. Such railings will be strong and stable.