non-metallic building materials; building materials, namely, bricks, pavers, tiles, and concrete blocks; non-metal sculptures and blocks of cementitious material; cementitious material for building purposes; cement mixes; concrete mixes; non-metallic building materials, namely, precast beams, precast columns, wall panels, architectural cladding, slabs, hollow core slabs, step treads, roof pavers, wall caps, decorative stone pavers, copings, pavestones, stepping stones, solid blocks, hollow bl...