Non-metal building materials in the nature of structural elements of plastic in the form of plastic modules and cells for installation in the ground to promote plant and tree growth and health, to control the flow of storm water and floodwater, to control soil erosion, and/or to assist the reinforcement of surfaces, namely, paved surfaces; non-metal building materials in the nature of structural plastic modules forming a load-bearing matrix for use in the ground for the sub-ground protection of trees and vegetation, for soil erosion control, for the reinforcement of surfaces, namely, paved surfaces, and/or for the filtration, treatment, storage and harvesting of ground water, storm water and floodwater; geotextiles being permeable fabrics made of polymers for use in the ground as tree pit lining, water filtration, soil erosion control and/or soil reinforcement; and non-metal building materials in the nature of plastic conduits for drainage, channeling, collection and/or treatment of floodwater and storm water; space frame units, not of plastic and not of metal; non-metallic tree gratings, grids, grilles and protectors; plastic conduits for drainage; plastic stormwater infiltration modules