Construction elements not made of metal, namely, supports; Construction materials in the nature of non-metal composite panels composed primarily of concrete for use as building blocks; Construction materials namely, energy conserving precast concrete slabs; Non-metal construction materials, namely, concrete blocks; Non-metal construction materials, namely, bricks; Non-metal construction materials, namely, building bricks; Non-metal construction materials, namely, building blocks; Non-metal construction materials, namely, building elements made of concrete; Non-metal construction materials, namely, materials for building structures; Non-metal construction materials, namely, concrete; Non-metal casings for use in building or construction; Non-metal concrete construction hardware, namely, load transfer dowels; Non-metal forming systems for concrete and other curable construction materials comprised of non-metal modular casting forms; Non-metallic reinforcements for concrete and wood building construction, namely, plates, rods and bars; Sandbags for construction; Self-leveling concrete for use in building construction