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IS 15972:2012 is the Indian Standard (BIS) for bamboo-jute composite corrugated and semi-corrugated sheets - specification. This standard specifies the requirements for corrugated and semi-corrugated sheets made from bamboo and jute composites, bonded with thermosetting resins. It covers materials, dimensions, physical and mechanical properties, and test methods for these eco-friendly roofing and cladding sheets.
Bamboo-Jute Composite Corrugated and Semi-Corrugated Sheets - Specification
Overview
Status
Current
Usage level
Specialized
Domain
Materials Science — Wood and Other Lignocellulosic Products
! This material is an eco-friendly alternative to asbestos or metal sheets for low-cost housing, shelters, and agricultural buildings.
! Proper handling is crucial during transport and installation to prevent cracking, as composite materials can be brittle.
! Always check the manufacturer's test certificate for compliance with key performance indicators like load capacity and water absorption before procurement.
Frequently referenced clauses
Cl. 4Materials
Cl. 5Dimensions and Tolerances
Cl. 6Requirements
Cl. 8Tests
Annex B - Test for Load Bearing Capacity
bamboojutecompositeresin
International Equivalents
Similar International Standards
ISO 9933:2014ISO (International Organization for Standardization), International
MediumCurrent
Fibre-cement corrugated sheets and fittings for roofing and cladding
Covers the same product form (corrugated sheets) and application (roofing), but for fibre-cement material instead of a natural fibre composite.
ASTM D7031 - 11(2019)ASTM International, USA
MediumCurrent
Standard Guide for Evaluating Mechanical and Physical Properties of Wood-Plastic Composite Products
Provides test methods for natural fibre (wood) plastic composites, similar to bamboo-jute polymer, but is a guide for testing, not a product specification for roofing sheets.
EN 534:2006+A1:2010CEN (European Committee for Standardization), Europe
LowCurrent
Corrugated bitumen sheets - Product specification and test methods
Specifies requirements for corrugated sheets for roofing, but for bitumen-based materials, not natural fibre composites.
Key Differences
≠The primary material in IS 15972 is a composite of natural fibres (bamboo, jute) with a phenolic resin, whereas international equivalents like ISO 9933 are for inorganic fibre-cement and EN 534 is for bitumen.
≠IS 15972 does not specify requirements for reaction to fire, a critical parameter for building materials. In contrast, ISO 9933 classifies fibre-cement as non-combustible (Euroclass A1).
≠The Indian standard is a niche specification for a specific, locally-developed 'green' building material, while standards like ISO 9933 cover a globally established, mass-produced industrial product.
≠Performance requirements, particularly bending strength, appear significantly higher in IS 15972 compared to typical values in ISO 9933, suggesting different design assumptions or safety factors.
Key Similarities
≈Both IS 15972 and comparable international standards (e.g., ISO 9933) specify functional tests for roofing applications, such as load-bearing capacity and water permeability, to ensure fitness for purpose.
≈All standards for corrugated sheets define critical geometric properties like pitch, depth of corrugation, thickness, and width to ensure consistent installation and performance.
≈They establish a quality control framework that includes sampling procedures, criteria for conformity, and mandatory marking of the product for traceability and compliance.
Parameter Comparison
Parameter
IS Value
International
Source
Breaking Load / Bending Moment
Min. breaking load of 3000 N/m width on a 500mm span, which calculates to a bending moment of 375 Nm/m.
Min. bending moment of 40 Nm/m (Class 1) or 55 Nm/m (Class 2).
ISO 9933:2014
Apparent Density
1250 ± 50 kg/m³
≥ 1400 kg/m³ (for autoclaved sheets)
ISO 9933:2014
Water Permeability
No formation of water drops on the underside after 24 hours under a specified test setup.
No formation of water drops on the underside after 24 hours under a head of water.
ISO 9933:2014
Nominal Thickness
6 mm (+1.0 / -0.5 mm tolerance)
Typically 6.0 mm or 6.5 mm depending on profile.
ISO 9933:2014
Water Absorption (by mass)
Max 20% after 24-hour immersion.
Not typically specified; performance is based on water-tightness test instead.
ISO 9933:2014
Reaction to Fire
Not specified in the standard.
Considered to satisfy the requirements for Class A1 (non-combustible) without testing.
ISO 9933:2014
Pitch of Corrugations
146 ± 3 mm
177 ± 3 mm (for large profile 'Profile 6')
ISO 9933:2014
⚠ Verify details from original standards before use