IS 4990 : 2011
Wood - Plywood for concrete shuttering works – Specification
summary
Plywood for concrete shuttering works is specially manufactured timber-based panel designed to withstand the pressure of fresh concrete during casting. It provides smooth surface finish, dimensional stability, and mechanical strength, ensuring quality construction, easy de-molding, and durability in residential, commercial, and infrastructure projects.
Why BIS Certificate is Mandatory for Plywood for concrete shuttering works – Specification
BIS certification is mandatory to ensure that plywood used for concrete shuttering meets strength, durability, moisture resistance, and safety standards. Certification prevents substandard or weak panels that can compromise structural quality, construction safety, and project longevity, ensuring reliable performance and compliance with Indian construction regulations.
What is BIS Certified for Plywood for concrete shuttering works – Specification
The BIS certified specification for plywood for concrete shuttering works defines material quality, veneer bonding, thickness, moisture content, mechanical strength, and surface finish. Compliance ensures that panels are suitable for concrete casting pressures, provide smooth finishes, resist warping or delamination, and meet Indian Standards for construction-grade shuttering plywood.
Test required for Plywood for concrete shuttering works – Specification
| Title | Mandatory/Optional |
|---|---|
| Adhesive | Required |
| Manufacture | Required |
| Moisture Content | Required |
| Dimensions & Tolerances | Required |
| Workmanship and Finish | Required |
| Glue adhesion in dry state | Required |
| Water Resistance Test | Required |
| Plywood withPlastic coatingor overlay | Required |
| Mycological test | Optional |
| Tensile strength | Required |
| Static Bending Strength | Required |
| Wet Bending Strength | Required |
| Retention of preservative | Required |
| Formaldehyde content, Fc, mg/100 gm for oven dry sample | Optional |
| Optional | Optional |
Benefits of BIS Certification for Plywood for concrete shuttering works – Specification
1. Structural Safety and Reliability
BIS-certified plywood ensures required mechanical strength, reducing risks of deformation, failure, or concrete leakage during casting.
2. Quality Construction Finish
Certified shuttering panels provide a smooth surface finish, improving aesthetics and reducing plastering or finishing costs.
3. Durability and Moisture Resistance
BIS standards ensure proper bonding and treatment, enhancing resistance to moisture, swelling, and delamination over multiple uses.
4. Legal and Market Compliance
BIS certification is mandatory in India, allowing manufacturers and suppliers to sell plywood legally and participate in construction projects and government tenders.
5. Trust and Industry Acceptance
BIS-marked plywood is widely accepted by contractors, architects, and developers, ensuring credibility, quality assurance, and repeat usage in large-scale construction.