Flexural Rigidity (EI) Calculator

Results

Book example default: 280 mm span, 2.8 mm top, four-brace layout.

Composite EI (N·m²)
Transformed I (mm⁴)
Centroid from plate (mm)
Height (mm)

Live: ready for inputs.

Computed from the current top profile and brace layout.

AA-line section

Span and brace layout are live.

Brace comparison

Relative mass uses total area as a proxy. Relative stiffness is based on I.

Brace gallery

Current brace shapes used in the AA-line result.