IS 1443:2019 is the Indian Standard (BIS) for precast terrazzo tiles - specification. This standard covers the material requirements, manufacturing process, physical properties, and testing methods for precast terrazzo tiles used in flooring and paving. It specifies dimensional tolerances, water absorption limits, transverse strength, and abrasion resistance to ensure long-term durability and aesthetic consistency in heavy-traffic applications.
Specifies requirements for precast terrazzo tiles for flooring, covering materials, dimensions, and performance characteristics.
Overview
- Status
- Current
- Usage level
- Frequently Used
- Domain
- Architectural — Flooring and Paving
- Type
- Specification
Also on InfraLens for IS 1443
BIM-relevant code. See the BIM Hub for ISO 19650, IFC, and LOD/LOIN frameworks used alongside it.
Practical Notes
! The wearing layer must be properly compacted during manufacturing to minimize voids, reduce water absorption, and prevent pitting.
! Proper curing is critical to prevent warping and ensure the wearing layer achieves the necessary hardness for grinding and polishing.
! Ensure the sub-floor is perfectly leveled before laying; hollow spots beneath the tiles can lead to cracking under point loads.
Frequently referenced clauses
terrazzoconcretemarble chipscementpigments
International Equivalents
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International Comparison — Coming Soon
We're adding equivalent international standards for this code.
Key Values6
Quick Reference Values
Water absorption (Max)10%
Tolerance on length and breadth± 1 mm
Tolerance on thickness± 3 mm
Tolerance on flatness1 mm
Minimum wearing layer thickness (small chips)5 mm
Minimum wearing layer thickness (large chips)6 mm
Key Formulas
Water Absorption (%) = [(M2 - M1) / M1] * 100
Wet Transverse Strength (N/mm²) = (3 * P * L) / (2 * b * d²)
Tables & Referenced Sections
Key Tables
Table 1 - Minimum Thickness of Wearing Layer
Table 2 - Tolerances on Dimensions
Table 3 - Physical Requirements (Abrasion, Water Absorption, Modulus of Rupture)
Key Clauses
Clause 4 - Materials
Clause 5 - Manufacture
Clause 6 - Dimensions and Tolerances
Clause 7 - Physical Requirements
Clause 9 - Sampling and Criteria for Conformity
Frequently Asked Questions4
What is the maximum permissible water absorption for precast terrazzo tiles?+
The maximum permissible water absorption is 10 percent by mass.
What is the minimum thickness required for the terrazzo wearing layer?+
It must be at least 5 mm or 6 mm, depending on the maximum size of the marble chips used in the mix.
What are the allowed dimensional tolerances for length and width?+
The allowed tolerance for both length and width is ± 1 mm.
Can ordinary portland cement be used for the wearing layer?+
Yes, but white portland cement (IS 8042) or a mixture with suitable pigments is commonly used to achieve the desired aesthetic finish.
QA/QC Inspection Templates
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QA/QC templates coming soon for this code.