square hollow section — 6.32 kg per metre, 8.05 cm² cross-sectional area. IS 4923:2017 (Amd. 2) Table 1 - Square Hollow Sections.
Square Hollow Sections. Reproduced as printed in IS 4923:2017 (Amd. 2) Table 1 - Square Hollow Sections.
As printed in IS 4923:2017 (Amd. 2) Table 1 - Square Hollow Sections. 72 mm deep, 72 mm wide. Units are shown on every row, because the two standards on this site use different ones for the radius of gyration.
| Depth of section D | 72 | mm |
|---|---|---|
| Width of section B | 72 | mm |
| Wall thickness t | 3 | mm |
| Mass per metre M | 6.32 | kg/m |
|---|---|---|
| Sectional area A | 8.05 | cm² |
| Second moment of area I | 62.92 | cm⁴ |
|---|---|---|
| Radius of gyration r | 2.8 | cm |
| Elastic section modulus Ze | 17.48 | cm³ |
| Plastic section modulus Zp | 20.62 | cm³ |
Total weight is the mass per metre multiplied by the length and the number of pieces. Ten pieces of 72x72x3 at six metres each is 6.32 × 6 × 10 = 379 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: 8.05 cm² of steel at 7 850 kg/m³ is 6.32 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 4923 : 2017 gives 72x72x3 a mass of 6.32 kg per metre. Its printed cross-sectional area of 8.05 cm² agrees: 8.05 cm² of steel at 7 850 kg/m³ works out at 6.32 kg per metre.
37.92 kg. Mass per metre times length: 6.32 × 6. Ten such pieces come to 379 kg.
72 mm deep and 72 mm wide, with a 3 mm web.
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Log in to QuickBOQ →Where these figures come from. IS 4923:2017 (Amd. 2) Table 1 - Square Hollow Sections 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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