StructureCalcsISLB 400
Light-Weight Beam (ISLB) · IS 808 · India
ISLB 400 is an Indian light-weight beam 400.0 mm deep with a 165.0 mm wide flange, weighing 56.9 kg/m. The dimensions below are the published IS 808 values.
ISLB light beams are the economical Indian I-series. StructureCalcs cannot yet draw their tapered profile to scale, but the published values are complete.
StructureCalcs cannot yet draw this family’s tapered profile to scale; the published dimensions below are complete.
Build and analyse any cross-section — plates, shapes and library sections.
Open the Section CalculatorFree, no sign-up, runs in your browser.
Published dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth, d | 400.0 mm | 15.75 in |
| Flange width, bf | 165.0 mm | 6.50 in |
| Flange thickness, tf | 12.5 mm | 0.492 in |
| Web thickness, tw | 8.0 mm | 0.315 in |
| Mass per metre | 56.9 kg/m | 38.2 lb/ft |
| Area, A | 7,240 mm² | 11.22 in² |
| Second moment, Ix | 193,000,000 mm⁴ | 463.7 in⁴ |
| Second moment, Iy | 7,160,000 mm⁴ | 17.2 in⁴ |
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