This standard prescribes the requirements for hard-drawn steel wire fabric (welded wire mesh) used as reinforcement in concrete. It details the manufacturing process, dimensional tolerances, physical properties, and specific testing methodologies like tensile and weld shear tests.
hard-drawn steel wire fabric for concrete reinforcement
Quick Reference Values
tolerance on mass±6 percent
minimum proof stress480 N/mm²
minimum tensile strength510 N/mm²
pitch tolerance±7.5 percent
elongation minimum7.5 percent
Key Formulas
P = 0.25 x A x fy — Minimum weld shear load capacity requirement (where A is area of the larger wire)
Practical Notes
Ensure proper lap splices when placing welded wire fabric to maintain structural continuity in slabs and pavements.
Weld shear strength is a critical parameter; if the welds fail during concreting or under stress, the reinforcement will not function integrally.
Verify the actual mass per square meter on site against the theoretical mass to check for negative tolerance compliance (-6%).