Indian (IS 808)I-beam

ISMB 100

Indian Standard Medium-weight Beam, 100 mm depth

SymbolPropertyValueUnit
hDepth100mm
bFlange width75mm
tfFlange thickness7.2mm
twWeb thickness4mm
ACross-section area14.6cm²
wMass per metre11.5kg/m
IxIx (major axis MoI)257.5cm⁴
SxSx (section modulus)51.5cm³
rxrx (radius of gyration)4.2cm
IyIy (minor axis MoI)40.8cm⁴
SySy (section modulus)10.9cm³
ryry (radius of gyration)1.67cm

Design with ISMB 100

Use the Section Design module to run flexure, shear, deflection, and code-compliance checks per IS 800.

Open Steel Section Design

Source: Indian (IS 808). Values are reference-grade — section properties don't change. For built-up or irregular sections, use the design modules to compute on custom geometry.