ISHB 300 Weight, Dimensions and IS 808 Properties
ISHB 300 weighs 67.1 kg per metre as per IS 808:1989.
- One 6-metre length weighs 402.6 kg · one 12-metre length weighs 805.2 kg
- Overall depth 300 mm · flange width 250 mm · web thickness 7.7 mm
- Cross-sectional area 8,564 mm² · Ixx = 12,545.8 cm⁴
ISHB 300 is the first section in IS 808:1989 where the ISHB depth exceeds the flange width. At 67.1 kg/m it marks the transition to the deeper-web ISHB series — depth increases to 300 mm while the flange width remains fixed at 250 mm. This means ISHB 300 and above have a larger I_xx/I_yy ratio than the square ISHB sizes, making them better suited to columns with uniaxial bending than the ISHB 150–250 range.
ISHB 300 Weight Calculator
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ISHB 300 — Weight Calculator
IS 808:1989 Dimensions and Sectional Properties
| Property | Symbol | Unit | Value |
|---|---|---|---|
| Overall depth | D | mm | 300 |
| Flange width | B | mm | 250 |
| Web thickness | tw | mm | 7.7 |
| Flange thickness | tf | mm | 10.6 |
| Cross-sectional area | A | mm² | 8,564 |
| Mass per metre | — | kg/m | 67.1 |
| Moment of inertia (x–x) | Ixx | cm⁴ | 12,545.8 |
| Moment of inertia (y–y) | Iyy | cm⁴ | 2,193.7 |
| Elastic section modulus (x–x) | Zxx | cm³ | 836.4 |
| Elastic section modulus (y–y) | Zyy | cm³ | 175.5 |
| Radius of gyration (x–x) | rxx | cm | 12.12 |
| Radius of gyration (y–y) | ryy | cm | 5.06 |
Dimensions and properties as per IS 808:1989 (reaffirmed 2021). Mass tolerance: ±2.5% per piece per IS 808.
Common Applications of ISHB 300
ISHB 300 is used as primary columns in heavy industrial buildings up to 10 m height, column sections in portal frame structures carrying significant wind and gravity load, and stanchions in heavy-duty mezzanine and overhead crane structures. The fixed 250 mm flange width gives a wide base plate footprint while the increased 300 mm depth provides greater strong-axis stiffness than ISHB 250 — important where columns carry substantial bending moment in one plane. SAIL Bhilai is the primary producer in India; supplied on indent from stockists in IS 2062 E250 and E350 grade.
Worked Example
A structural engineer in Hyderabad specifies 18 columns of ISHB 300, each 7 m tall, for a heavy workshop building. Total length = 18 × 7 = 126 m. Weight = 126 × 67.1 = 8,454.6 kg (8.455 tonnes). At a market rate of ₹64,000 per tonne (Hyderabad, May 2026), the material cost is approximately ₹5,41,090 before base plates, caps, and erection.
Related ISHB Sections
Compare with adjacent sizes: ISHB 250 (54.7 kg/m) · ISHB 350 (79.4 kg/m). Note: ISHB 300 onwards have a fixed 250 mm flange width with increasing depth — different geometry from ISHB 150–250. For all ISHB sizes see the Section Reference Library →
Frequently Asked Questions
What is the weight of ISHB 300 per metre?
ISHB 300 weighs 67.1 kg per metre as specified in IS 808:1989. For a standard 6-metre length, the total weight is 402.6 kg. For a 12-metre length, total weight is 805.2 kg.
ISHB 300 ka weight per meter kitna hota hai?
IS 808:1989 standard ke according, ISHB 300 ka weight 67.1 kg/m hota hai. 6 metre ki ek length ka total weight 402.6 kg hoga. Zyada accurate calculation ke liye upar diya gaya calculator use karein.
What are the dimensions of ISHB 300?
ISHB 300 per IS 808:1989 has an overall depth of 300 mm, flange width of 250 mm, web thickness of 7.7 mm, and flange thickness of 10.6 mm. The cross-sectional area is 8,564 mm².
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