This guideline outlines the specifications for marble blocks, slabs, and tiles used in construction and decorative works in India. It details requirements regarding dimensions, physical characteristics, quality standards, workmanship, and surface finishes for various marble types such as white, pink, green, black, and brown. The standard is invaluable for manufacturers, suppliers, engineers, and designers involved in quality assurance and material selection.
Overview
This guideline outlines the specifications for marble blocks, slabs, and tiles used in construction and decorative works in India. It details requirements regarding dimensions, physical characteristics, quality standards, workmanship, and surface finishes for various marble types such as white, pink, green, black, and brown. The standard is invaluable for manufacturers, suppliers, engineers, and designers involved in quality assurance and material selection.
Audience
Contents
Structure
This section defines the scope covering marble blocks, slabs, and tiles, including sampling methods, size specifications, and conformity criteria.
Clarifies terminology related to marble products, ensuring a consistent understanding of material types, sizes, and quality parameters.
Details the categorization of marble into white and colored types, along with their typical finishes and characteristics.
Describes the natural variability in marble, providing typical physical and mechanical properties and distinctions between types.
Specifies standard size ranges and increments for marble blocks and slabs, along with tolerances and custom sizing provisions.
Outlines workmanship requirements, defect limits, sample sizes for inspection, and descriptions of surface finishes.
Defines essential physical property tests including moisture absorption, hardness, and specific gravity, with testing procedures and acceptance criteria.
Details the types of finishes applicable to marble slabs and tiles, their appearance, texture, and suitability for various applications.
Specifies requirements for manufacturer marks and optional standard conformity marks on marble products for traceability.
Describes sampling sizes based on lot quantity, inspection criteria, and acceptance or rejection of lots.
Covers the testing facilities manufacturers must provide, sampling for certification, and the process for approving marble lots.
Provides an extended classification based on color, texture, grain size, and veining patterns to aid material selection.
Frequently Asked
IS 1130 defines standard dimensions for marble products as follows: Marble blocks generally range from 1.0 to 2.0 meters in length, 0.5 to 1.0 meters in width, and 0.3 to 0.6 meters in thickness, mainly used for further processing. Marble slabs, intended for flooring, stairs, and tabletops, typically measure between 0.6 and 1.2 meters in length, 0.3 to 0.6 meters in width, with thicknesses from 15 to 25 millimeters. Tiles are usually square with sides of 200 to 300 millimeters and thickness between 10 and 15 millimeters. These sizes serve as guidelines subject to quarry and manufacturing capabilities, ensuring proper procurement and quality control.
The standard mandates testing of key physical characteristics including moisture absorption, which must not exceed 0.4% by weight as per IS 1124; hardness with a minimum value of 3 on the Mohs scale; and specific gravity not less than 2.5 following IS 1122. These tests are performed on randomly selected sub-samples from each lot after dimensional and workmanship checks. Compliance with these parameters ensures the marble's durability, density, and resistance to moisture, critical for its intended use.
The standard broadly divides marble into two categories: White Marble and Coloured Marble. White Marble typically comprises pure or nearly pure white varieties used for both aesthetic and structural purposes. Coloured Marble includes marbles exhibiting hues such as pink, green, black, yellow, and brown. This classification aids designers and engineers in choosing the appropriate type for various construction and decorative applications.
IS 1130 specifies three main surface finishes for marble products: sand or abrasive finish, which provides a matte and non-reflective texture achieved through sanding; hone finish, characterized by a smooth, soft sheen with minimal gloss; and polished finish, offering a glossy, reflective surface that enhances the marble’s color and natural patterns. Selection among these finishes depends on aesthetic preferences and functional requirements such as slip resistance.
Compliance verification involves a multi-step process: First, sampling is performed based on the lot size following the prescribed sample sizes and permissible defective counts. Each sample is inspected for dimensional accuracy, workmanship, and general conformance. If the number of defective samples does not exceed allowable limits, a sub-sample is then tested for physical properties like moisture absorption, hardness, and specific gravity. The lot is accepted only if all sub-samples pass these tests; otherwise, it is rejected. This systematic approach ensures quality control in accordance with IS 1130.
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