For Plywood for concrete shuttering works ISI Mark is Mandatory as per BIS IS 4990: 2011. This Indian Standard outlines the requirements, sampling and test procedures for plywood for concrete formwork and shuttering in building and infrastructure projects. Standard specifies critical quality parameters like dimensions, tolerance of thickness, bonding strength, density, surface finish and mechanical properties to be met to ensure that the plywood can withstand the stresses and moisture related to repeated concrete casting operations. IS 4990:2011 recommends the use of good quality veneers and appropriate veneered adhesive systems for a high resistance to water, warping, delamination and surface wear. The standard focuses on the quality of the manufacturing processes and testing of the quality to guarantee dimensional stability, durability and performance under the harsh conditions of construction. It also contains information on marking, packing and labelling for easy product identification, traceability and compliance checking. Plywood for concrete shuttering work, which is Bureau of Indian Standards certified to IS 4990:2011 ensures reliability, reusability and suitability in concrete formwork applications for construction projects, because it is compliant with the national quality and performance benchmarks.
