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IS 3622 : 1977sandstone (slabs and tiles)

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ASTM C616 / C616M · EN 12058 · EN 12057
CurrentSpecializedSpecificationMaterials Science · Stones
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OverviewValues5InternationalTablesFAQ3Related

IS 3622:1977 is the Indian Standard (BIS) for sandstone (slabs and tiles). This standard lays down the requirements for dimensions, physical properties, and workmanship for sandstone slabs and tiles used for flooring, paving, facing, and cladding in building construction.

sandstone (slabs and tiles)

Overview

Status
Current
Usage level
Specialized
Domain
Materials Science — Stones
Type
Specification
International equivalents
ASTM C616 / C616M-23 · ASTM International, USAEN 12058:2014 · CEN (European Committee for Standardization), EuropeEN 12057:2014 · CEN (European Committee for Standardization), EuropeEN 1469:2015 · CEN (European Committee for Standardization), Europe
Typically used with
IS 1121IS 1122IS 1124IS 1125IS 1126
Also on InfraLens for IS 3622
5Key values2Tables3FAQs
Practical Notes
! Sandstone should always be laid such that its natural bedding plane is perpendicular to the direction of the applied load to prevent delamination.
! For cladding purposes, careful checking of thickness tolerances is critical to avoid lippage and ensure a flush finish.
! Visual inspection must rule out weathering defects, soft veins, or clay holes which compromise durability.
Frequently referenced clauses
Cl. 3General Requirements (Quality of Stone)Cl. 4Dimensions and TolerancesCl. 5Physical PropertiesCl. 7Sampling and Criteria for Conformity
Pulled from IS 3622:1977. Browse the full clause & table index below in Tables & Referenced Sections.
sandstonenatural stoneslabstiles

International Equivalents

Similar International Standards
ASTM C616 / C616M-23ASTM International, USA
HighCurrent
Standard Specification for Quartz-Based Dimension Stone
Covers requirements for sandstone, quartzitic sandstone, and quartzite for general building and structural purposes.
EN 12058:2014CEN (European Committee for Standardization), Europe
MediumCurrent
Natural stone products - Slabs for floors and stairs - Requirements
Covers natural stone slabs for flooring but is material-agnostic, relying on supplier declarations for properties.
EN 12057:2014CEN (European Committee for Standardization), Europe
MediumCurrent
Natural stone products - Modular tiles - Requirements
Covers natural stone tiles for flooring and stairs, but is not specific to sandstone and uses a performance-based approach.
EN 1469:2015CEN (European Committee for Standardization), Europe
MediumCurrent
Natural stone products - Slabs for cladding - Requirements
Specifies requirements for natural stone slabs for wall cladding, one of the applications covered by IS 3622.
Key Differences
≠IS 3622 is prescriptive, setting fixed minimum/maximum values for physical properties. In contrast, EN standards (e.g., EN 12058) are performance-based, requiring the producer to test and declare values, which the specifier then evaluates for suitability.
≠The test methods for key properties are different and not directly comparable. IS 3622 refers to Indian Standards (e.g., IS 1124 for water absorption), while ASTM and EN have their own distinct test procedures (e.g., ASTM C97, EN 13755) which can yield different results for the same material.
≠Abrasion resistance measurement methods are fundamentally different. IS 3622 specifies a 'coefficient of hardness' test (from IS 1706), whereas ASTM C616 uses an 'abrasion resistance value' (Ha) from ASTM C1353, and EN standards use tests like Böhme (EN 14157). The results are not interchangeable.
≠IS 3622 is specific only to sandstone. ASTM C616 groups sandstone with quartzitic sandstone and quartzite, providing different property thresholds for each within the same standard.
Key Similarities
≈All standards cover the primary applications of sandstone slabs and tiles, including flooring, paving, and wall facing/cladding in building construction.
≈They all recognize and mandate testing for a common set of crucial physical properties: water absorption, compressive strength, and flexural/transverse strength (Modulus of Rupture).
≈All standards include clauses that specify permissible tolerances for dimensions (length, width, thickness) and general requirements for surface and edge finishes.
≈There is a shared requirement across all standards that the stone must be sound, reasonably uniform, and free from defects such as cracks, soft veins, or large cavities that would compromise structural integrity or aesthetic appearance.
Parameter Comparison
ParameterIS ValueInternationalSource
Water Absorption (Max)5.0 % by weight8.0 % by weight (for Sandstone category)ASTM C616/C616M
Compressive Strength (Min)35 MPa28 MPa (4000 psi)ASTM C616/C616M
Modulus of Rupture / Transverse Strength (Min)3.5 MPa2.8 MPa (400 psi)ASTM C616/C616M
Abrasion ResistanceMin. coefficient of hardness of 8 (per IS 1706)Min. abrasion resistance of 8 Ha (per ASTM C1353)ASTM C616/C616M
Property Specification ApproachPrescribes fixed minimum/maximum property values.Requires producer to declare values based on EN test methods; no minimums are set in the standard itself.EN 12058 / EN 12057
Thickness Tolerance (Slabs < 50mm thick)±2 mm (for thickness ≤40mm)±3 mm (1/8 in)ASTM C616/C616M
Material GroupingSandstone only.Quartz-Based Stone (Sandstone, Quartzitic Sandstone, Quartzite) with separate property tables for each.ASTM C616/C616M
⚠ Verify details from original standards before use

Key Values5

Quick Reference Values
Maximum water absorption2.5% by weight
Minimum modulus of rupture (transverse strength)15 N/mm²
Tolerance on length and width (machine cut)± 2 mm
Tolerance on thickness (machine cut)± 2 mm
Tolerance on thickness (hand dressed)± 5 mm

Tables & Referenced Sections

Key Tables
Table 1 - Standard Dimensions of Slabs and Tiles
Table 2 - Physical Properties of Sandstone
Key Clauses
Clause 3 - General Requirements (Quality of Stone)
Clause 4 - Dimensions and Tolerances
Clause 5 - Physical Properties
Clause 7 - Sampling and Criteria for Conformity

Related Resources on InfraLens

Cross-Referenced Codes
IS 1121:1974Methods of Test for Determination of Strength...
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IS 1122:1974Method of test for determination of true spec...
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IS 1124:1974Method of test for determination of water abs...
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IS 1125:1974Method of test for determination of weatherin...
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IS 1126:1974Method of test for determination of durabilit...
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Frequently Asked Questions3

What is the maximum permissible water absorption for sandstone slabs?+
The maximum water absorption should not exceed 2.5 percent by mass.
What is the acceptable tolerance for hand-dressed sandstone thickness?+
A tolerance of ± 5 mm is generally acceptable for hand-dressed slabs, whereas machine-cut slabs have a tighter tolerance of ± 2 mm.
Which IS code details the testing methods for the physical properties of this sandstone?+
IS 1121 (Parts 1 to 4) is used for testing strength, and IS 1124 is used for water absorption.

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