circular hollow section — 38.86 kg per metre, 49.51 cm² cross-sectional area. IS 1161:2014 Table 1 - Steel Tubes for Structural Purposes.
Circular Hollow Sections. Reproduced as printed in IS 1161:2014 Table 1 - Steel Tubes for Structural Purposes.
As printed in IS 1161:2014 Table 1 - Steel Tubes for Structural Purposes. 273 mm outside diameter, 5.9 mm wall thickness. Units are shown on every row, because the two standards on this site use different ones for the radius of gyration.
| Nominal bore NB | 225 | mm |
|---|---|---|
| Outside diameter OD | 273 | mm |
| Wall thickness t | 5.9 | mm |
| Mass per metre M | 38.86 | kg/m |
|---|---|---|
| Sectional area A | 49.51 | cm² |
| Second moment of area I | 4,417.18 | cm⁴ |
|---|---|---|
| Section modulus Z | 323.6 | cm³ |
| Radius of gyration r | 9.45 | cm |
| Square of the radius of gyration r² | 89.22 | cm² |
Total weight is the mass per metre multiplied by the length and the number of pieces. Ten pieces of 273 mm OD × 5.9 mm at six metres each is 38.86 × 6 × 10 = 2,332 kg. There is nothing else to it — the standard publishes the mass, so no one needs to compute it from the area.
You can check that mass against the area on this page: 49.51 cm² of steel at 7 850 kg/m³ is 38.87 kg/m. Every row in this dataset was checked that way, which is how the contradictions flagged on some of these pages were found.
Work it out for your own lengths and quantities →
IS 1161 : 2014 gives 273 mm OD × 5.9 mm a mass of 38.86 kg per metre. Its printed cross-sectional area of 49.51 cm² agrees: 49.51 cm² of steel at 7 850 kg/m³ works out at 38.87 kg per metre.
233.16 kg. Mass per metre times length: 38.86 × 6. Ten such pieces come to 2332 kg.
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Log in to QuickBOQ →Where these figures come from. IS 1161:2014 Table 1 - Steel Tubes for Structural Purposes Section properties are facts published in the standards, and they are reproduced here as printed. Where a standard contradicts itself, both of its figures are shown and neither is corrected.
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