This standard (Part 2) specifies the requirements for dimensions, strength, and testing of structural type hollow clay tiles used in the construction of floors and roofs. These tiles are designed to safely bear structural loads while reducing the overall dead weight of the floor or roof system and providing thermal insulation.
Hollow clay tiles for floors and roofs, Part 2: Structural type
Quick Reference Values
Maximum water absorption20% by mass
Maximum efflorescenceSlight
Typical Minimum compressive strength15 N/mm² (over gross area)
Practical Notes
Hollow clay tiles significantly reduce the dead weight of roof slabs (often used in filler slabs) while improving thermal and acoustic insulation.
Tiles must be thoroughly soaked in water before placing concrete or mortar to prevent them from absorbing mixing water and weakening the bond.
Careful handling during transit and installation is required; tiles with cracked or damaged webs compromise the structural capacity of the floor.