Does this standard define the tolerance limits for the dimensions of the bars?

No, rolling and cutting tolerances are covered under IS 1852.

What is the maximum diameter for round bars specified in this code?

The code specifies nominal dimensions for round bars up to 200 mm.

IS 1732

: 1989

Dimensions for Round and Square Steel Bars for Structural and General Engineering Purposes

CurrentFrequently UsedSpecificationBIMStructural Engineering · Steel and Reinforcement

This standard covers the dimensions, cross-sectional areas, and mass per unit length of hot-rolled round and square steel bars used for structural and general engineering purposes. It is a fundamental reference for structural detailing, quantity estimation, and fabrication.

Specifies dimensions for hot rolled round and square steel bars for structural and general engineering purposes.

Quick Reference Values

Density of steel assumed7.85 g/cm³ (7850 kg/m³)

Nominal diameter range (Round bars)5 mm to 200 mm

Nominal side range (Square bars)5 mm to 100 mm

Key Formulas

Mass per meter of round bar = (d² / 162.28) kg/m (derived from 7850 kg/m³)

Practical Notes

Quantity Surveyors heavily rely on the mass-per-meter values listed in this code to prepare Bills of Quantities (BOQ).

This code provides nominal dimensions only; for allowable rolling and cutting tolerances, engineers must refer to IS 1852.