StructureCalcsISMC 250
Medium-Weight Channel (ISMC) · IS 808 · India
ISMC 250 is an Indian medium-weight channel 250.0 mm deep with a 80.0 mm wide flange, weighing 30.6 kg/m. The dimensions below are the published IS 808 values; the drawing is generated from them.
ISMC medium channels are the standard Indian channel for stringers, purlins and built-up members.
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Published dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth, d | 250.0 mm | 9.84 in |
| Flange width, bf | 80.0 mm | 3.15 in |
| Flange thickness, tf | 14.1 mm | 0.555 in |
| Web thickness, tw | 7.2 mm | 0.283 in |
| Mass per metre | 30.6 kg/m | 20.6 lb/ft |
| Area, A | 3,900 mm² | 6.05 in² |
| Second moment, Ix | 38,800,000 mm⁴ | 93.2 in⁴ |
| Second moment, Iy | 2,110,000 mm⁴ | 5.1 in⁴ |
Derived section properties
Integrated from the section's own outline including the root and toe radii, whose arcs are integrated analytically rather than approximated by facets. For ISMC 250 the computed area agrees with the published value to 0.01% and Ix to 1.00%. Where a value is also published, the published one above is the one to quote.
| Property | Value |
|---|---|
| Elastic modulus, Zex | 307,311 mm³ |
| Elastic modulus, Zey | 38,477 mm³ |
| Plastic modulus, Zpx | 359,267 mm³ |
| Plastic modulus, Zpy | 74,093 mm³ |
| Radius of gyration, rx | 99.2 mm |
| Radius of gyration, ry | 23.7 mm |
Ze is the elastic modulus and Zp the plastic modulus, following IS 800 notation.
Neighbouring sizes
Where these numbers come from
Published IS 808 values. How StructureCalcs verifies its numbers · Understanding steel section properties · Query this section over the API