Guides & Support

Introduction

Welcome to our moment of inertia calculator for a triangular section. Enter the height (H) and width (B) of your section below, and see the results in the output section below.
This tool calculates Ixx and Iyy about the centroidal axis.

Calculations

⬇️ Inputs



H
:150mm​

b2>0 if angle α is acute (<90°)


B1
:500mm​

b2<0 if angle α is obtuse (>90°)


B2
:123mm​

b2=0 for right triangle


⬆️ Outputs

Moment of inertia


Ixx (mm4)
:46875000​



Iyy (mm4)
:424227083​


Dimensions


Area
:37500mm2​



xc
:207.666667mm​



yc
:50mm​



alpha
:13.8203395deg​



Explanation

The moment of inertia of a triangular section can be calculated using the equations shown to the right. B1 represents the section's width, and H is its height.

Triangular Section

b2>0 if angle α is acute (<90°)
b2<0 if angle α is obtuse (>90°)
b2=0 for right triangle