Non-metallic building materials; non-metallic rigid pipes for building; asphalt, pitch and bitumen; non-metallic transportable buildings; non-metallic monuments; non-metallic framed conservatories, doors and windows; non-metallic supports; tree gratings (non-metallic-) for draining thoroughfares; non-metallic supports for use in horticulture and landscaping; non-metallic building materials all for use in horticulture and landscaping; non-metallic load bearing supports and structures for use in horticulture and for use in preventing soil from becoming compacted; soil vents (non-metallic); structural elements (non-metallic -) for use in soil, tree support, horticulture and landscaping; soil cells; structural elements made of plastic; space frame structural units, not of metal; non-metallic structural modules forming a load bearing matrix, including for below ground use; structural elements, space frame units and structural modules (not of metal) all for use in the ground in relation to horticulture, tree support, soil erosion control, and reinforcement of surfaces, including pavements; non-metallic linings for pits; non-metallic tree gratings, grids, grilles and protectors; non-metallic drainage structures for use in the channelling or collection of floodwater and stormwater; plastic conduits for drainage; plastic stormwater infiltration modules.