The 'IS 1786' covers the requirements for:
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Plain mild steel round bars (IS 432 covers this)
High Strength Deformed (HSD) rebars Fe 415–Fe 600 for RC — covers yield strength, elongation, and ductility
Pre-stressing steel wires and strands
Structural steel plates and sections (IS 2062)
Correct Answer
B. High Strength Deformed (HSD) rebars Fe 415–Fe 600 for RC — covers yield strength, elongation, and ductility
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IS 1786:2008: High Strength Deformed (HSD) steel bars and wires for concrete reinforcement. Grades: Fe 415 (min fy=415 MPa), Fe 500, Fe 500D (ductile grade), Fe 550, Fe 550D, Fe 600. ''D'' suffix = additional ductility requirements (elongation ≥ 14.5%). Test requirements: tensile strength, elongation, bend test, rebend test. Used along with IS 432 (mild steel/medium tensile), IS 1785 (PSC wires).
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