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Building materials (non-metallic); non-metallic rigid pipes for building; asphalt, pitch and bitumen; non-metallic transportable buildings; monuments, not of metal.
non-metallic building materials, namely, sand, gravel, stone; [ roofing slates, landscaping slates, architectural design slates, bricks, brick slabs, brick tiles, ] concrete blocks, concrete slabs, [ concrete roofing tiles, clay slabs, clay tiles, ceramic tiles, paving tiles, marble tiles; tar, pitch, asphalt; bitumen and macadam; ] portland cement, roofing cement, masonry cement, granulated blast furnace cement, hydraulic cement, stucco cement, pozzolanic cement, cement mixes, concrete, stone aggregate, ready-mix concrete, [ concrete drain pipes, concrete water supply pipes, concrete sewer pipes, ] recycled concrete and [ pumice, pavers, paving stones, paving tiles and ] recycled construction debris composed of [ wood or ] concrete [; and construction materials in the nature of plastic slabs ]