Cross-Section Analyzer  ·  Centroid · Inertia · Mohr's Circle
Özgür Yurdakul  |  Faculty of Transport Engineering, University of Pardubice
v1.2 (May 2026)  ·  Units: mm, mm², mm⁴, mm³  ·  CC BY-NC-SA 4.0
Yurdakul, Ö. (2026). CompositeSectionGUI: A web-based composite cross-section analyzer. Univ. of Pardubice. Available at: ozguryurdakul.github.io/educationaltools
Ref. point: x = y = Add shapes from any tab — all contribute to the same composite section.
Shape Type: Sign:
Label:
x₀ centroid (mm): y₀ (mm):
Dimensions
Width b (mm):
Height h (mm):
x₀ / y₀ = centroid of this shape in the global coordinate system.
Enter properties from a section handbook or your own calculations.
Label:
Area A (mm²):
Centroid x₀ (mm):
Centroid y₀ (mm):
Ix (own centroid, mm⁴):
Iy (own centroid, mm⁴):
Ixy (own centroid, mm⁴):
Sign:
Profile:
Label:
Zone 1 — Geometry (for schematic preview)
h - total height (mm):
b - flange width (mm):
tw - web thickness (mm):
tf - flange thickness (mm):
Zone 2 — Section Properties (from table, used in calculation)
A (mm²):
Ix (mm⁴):
Iy (mm⁴):
x₀ (mm): y₀ (mm):
α (°, CCW): Sign:
Defined Shapes  (Label / Sign / x₀ / y₀ / alpha are editable)
#LabelTypeSign x₀y₀α°A·sign
  Add shapes from any tab — all go into the same composite section.
  Double-click table cells (Label / Sign / x₀ / y₀ / alpha) to edit after adding.
  Click CALCULATE when ready.
CROSS-SECTION
MOHR'S CIRCLE — MOMENTS OF INERTIA