This specification covers structural clay load-bearing facing tile. Structural facing tile are tile designed for use in interior and exterior unplastered walls and partitions of buildings. Two classes of structural clay facing tile are covered: standard - tile suitable for general use in exterior or interior masonry walls and partitions, and special duty - tile suitable for general use in exterior or interior masonry walls and partitions, and designed to have superior resistance to impact and moisture transmission and to support greater lateral and compressive loads than standard tile construction. Two types of structural clay facing tile are covered: type FTX - smooth-face tile suitable for general use in exposed exterior and interior masonry walls and partitions, and type FTS - smooth- or rough texture face tile suitable for general use in exposed exterior and interior masonry walls and partitions. The tile shall conform to one of the requirements for water absorption of the type specified as prescribed. The tile shall conform to the requirements for compressive strength of the class specified as prescribed. The tile shall be of the sizes and shapes specified. Requirements as to coring shall apply to multicored tile only. The compressive strength and absorption by 1-h boiling shall be tested to meet the requirements prescribed.