3350 Earth Building common requirements (0) Earth Building common requirements 3351 Unfired earth masonry (0) Earth masonry consisting generally of unfired blocks and bricks, including pressed bricks, made of clay and other earth materials, with or without reinforcement and bituminous, plastics or cementitious binders, laid in courses to form structural and non-structural walls, partitions, etc. 3352 Rammed earth building (0) Rammed earth building