Portable, prefabricated and prefabricated temporary buildings, being wholly or principally non-metallic; mechanically stabilised earth structures in the form of panels, plates, sheets, grids, shaped sections, tiles, blocks, bars, rods and strips for exterior use; earth retaining structures in the form of non-metal panels, plates, sheets, grids, shaped sections, tiles, blocks, bars, rods and strips; non-metallic articles for use in civil engineering construction, namely shores, supports, and braces; non-metallic reinforcement for civil engineering construction namely, fencing, sheeting and facing; non-metallic panels for use in forming the facing of mechanically stabilised earth structures; concrete; concrete panels, concrete blocks; non-metallic earth stabilising members in the nature of beams, walls, struts and panels; construction materials, namely, non-metallic panels for exterior use; non-metal storage containers or structures, namely, enclosures, non-metallic reservoirs, tanks and silos for retaining earth