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IS 14871:2000 is the Indian Standard (BIS) for products in fibre reinforced cement - long corrugated or asymmetrical section sheets and fittings for roofing and cladding. This standard specifies the requirements for non-asbestos fibre-reinforced cement corrugated sheets and associated fittings intended for roofing and cladding. It outlines the materials, dimensions, physical performance criteria such as breaking load and water permeability, and the test methods for verification.
Products in Fibre Reinforced Cement - Long Corrugated or Asymmetrical Section Sheets and Fittings for Roofing and Cladding
ISO 9933:2015ISO (International Organization for Standardization)
HighCurrent
Products in fibre-cement — Corrugated sheets and fittings for roofing
Covers classification, characteristics, and test methods for corrugated fibre-cement sheets for roofing, a direct parallel.
EN 494:2012+A1:2015CEN (European Committee for Standardization), Europe
HighCurrent
Fibre-cement corrugated sheets and fittings — Product specification and test methods
Defines specifications and test methods for non-asbestos fibre-cement corrugated sheets and fittings, widely used as a benchmark.
ABNT NBR 15210-1:2013ABNT (Brazilian Association of Technical Standards), Brazil
MediumCurrent
Telhas de fibrocimento sem amianto – Parte 1: Classificação e requisitos (Non-asbestos fibre-cement tiles – Part 1: Classification and requirements)
Specifies requirements for non-asbestos fibre-cement roofing tiles (sheets), a major regional equivalent standard.
Key Differences
≠IS 14871 specifies strength via a 'Breaking Load' test (N/m), which is dependent on the test setup. EN 494 and ISO 9933 use a 'Bending Moment' test (Nm/m), which measures an intrinsic material property, allowing for easier engineering calculations.
≠EN 494 and ISO 9933 use a performance-based classification system for sheets (e.g., Classes A to E based on bending moment), which is not present in IS 14871. The Indian standard primarily classifies products by profile and dimensions.
≠European standard EN 494 includes mandatory freeze-thaw cycle testing for sheets intended for use in cold climates (Category C), a more severe durability test than the 'Heat-Rain' test stipulated in IS 14871.
≠The minimum apparent density required in EN 494 (e.g., 1.40 g/cm³) is generally higher than the minimum specified in IS 14871 (1.25 g/cm³), suggesting international standards may drive toward more compacted products.
Key Similarities
≈All standards explicitly cover cement-based products reinforced with fibres other than asbestos, addressing the same fundamental material technology.
≈A water tightness/permeability test is a mandatory requirement in all standards, ensuring the product's primary function as a roofing barrier is met. The test principle (no water droplets on the underside after 24 hours) is nearly identical.
≈All standards provide detailed specifications and tolerance limits for key geometric properties, including length, width, thickness, and the pitch of corrugations, to ensure product interchangeability and fit.
≈The primary scope of application in all compared standards is for roofing and, in many cases, external cladding, demonstrating a shared end-use focus.
Parameter Comparison
Parameter
IS Value
International
Source
Strength Test Method
Breaking Load Test (result in N/m width)
Bending Moment Test (result in Nm/m)
EN 494:2012+A1:2015
Minimum Apparent Density
≥ 1.25 g/cm³
≥ 1.40 g/cm³ (for Type NT)
EN 494:2012+A1:2015
Water Permeability Test
No drops of water shall form on the underside after 24h
No formation of drops of water shall appear on the underside of the test specimen after 24h
ISO 9933:2015
Length Tolerance
+10 mm / -5 mm
± 10 mm
ISO 9933:2015
Thickness Tolerance
±10% of nominal thickness (max 1.0 mm)
±10% of nominal thickness 'e' (max +1.0 mm and -0.6 mm)
EN 494:2012+A1:2015
Weathering Durability Test
Heat-Rain Test (50 cycles)
Includes Heat-Rain, Warm Water, and Freeze-Thaw tests (depending on category)
EN 494:2012+A1:2015
⚠ Verify details from original standards before use
Key Values7
Quick Reference Values
Nominal thickness6 mm
Tolerance on thickness±0.6 mm
Minimum breaking load (Class B sheet)1500 N/m width
Minimum breaking load (Class C sheet)2500 N/m width
Maximum water absorption (by mass)28 %
Standard pitch of corrugation146 mm
Standard depth of corrugation48 mm
Tables & Referenced Sections
Key Tables
Table 1 - Geometrical Characteristics of Corrugated Sheets