ISMC 250 Weight, Dimensions and IS 808 Properties
ISMC 250 weighs 30.6 kg per metre as per IS 808:1989.
- One 6-metre length weighs 183.6 kg · one 12-metre length weighs 367.2 kg
- Web height 250 mm · flange width 80 mm · web thickness 7.2 mm
- Cross-sectional area 38.90 cm² · Ixx = 4243.1 cm⁴
ISMC 250 is a heavy-duty channel section in IS 808:1989. At 30.6 kg/m with a 250 mm web and 80 mm flange, it is widely used for back-to-back column pairs in prefabricated industrial buildings, heavy crane runway channels, and primary floor beams where a deep channel section is specified.
ISMC 250 Weight Calculator
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ISMC 250 — Weight Calculator
IS 808:1989 Dimensions and Sectional Properties
| Property | Symbol | Unit | Value |
|---|---|---|---|
| Web height | h | mm | 250 |
| Flange width | b | mm | 80 |
| Web thickness | tw | mm | 7.2 |
| Flange thickness | tf | mm | 12.4 |
| Cross-sectional area | A | cm² | 38.90 |
| Mass per metre | — | kg/m | 30.6 |
| Moment of inertia (x–x) | Ixx | cm⁴ | 4243.1 |
| Moment of inertia (y–y) | Iyy | cm⁴ | 138.5 |
| Elastic section modulus (x–x) | Zxx | cm³ | 339.4 |
| Elastic section modulus (y–y) | Zyy | cm³ | 23.5 |
| Radius of gyration (x–x) | rxx | cm | 10.43 |
| Radius of gyration (y–y) | ryy | cm | 1.89 |
Dimensions and properties as per IS 808:1989 (reaffirmed 2021). Mass tolerance: ±2.5% per piece per IS 808.
Common Applications of ISMC 250
ISMC 250 is used for back-to-back column pairs in prefabricated equipment rooms and industrial buildings, primary floor beams in heavy mezzanines, EOT crane runway channels for 5–10 tonne capacity, and heavy sliding gate tracks. SAIL Bhilai and JSW Steel Vijayanagar produce ISMC 250 in IS 2062 E250 and E300 grade on request.
Worked Example
A structural engineer in Chennai specifies 6 back-to-back ISMC 250 column pairs (12 single channels), each 4.5 m tall, for a prefabricated equipment room. Total channel length = 12 × 4.5 = 54 m. Weight = 54 × 30.6 = 1,652.4 kg (1.652 tonnes). At a market rate of ₹58,500 per tonne (Chennai, May 2026), the material cost is approximately ₹96,670 before fabrication.
Related ISMC Sections
Compare with adjacent sizes: ISMC 225 (25.4 kg/m) · ISMC 300 (36.3 kg/m). For all ISMC sizes see the Section Reference Library →
Frequently Asked Questions
What is the weight of ISMC 250 per metre?
ISMC 250 weighs 30.6 kg per metre as specified in IS 808:1989. For a standard 6-metre length, the total weight is 183.6 kg. For a 12-metre length, total weight is 367.2 kg.
ISMC 250 ka weight per meter kitna hota hai?
IS 808:1989 standard ke according, ISMC 250 ka weight 30.6 kg/m hota hai. 6 metre ki ek length ka total weight 183.6 kg hoga. Zyada accurate calculation ke liye upar diya gaya calculator use karein.
What are the dimensions of ISMC 250?
ISMC 250 per IS 808:1989 has a web height of 250 mm, flange width of 80 mm, web thickness of 7.2 mm, and flange thickness of 12.4 mm. The cross-sectional area is 38.90 cm².
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