# Area Moment of Inertia Section Properties of Square Tube Calculator

The section modulus for the specific gross section area can be calculated using this area moment of inertia section properties of square tube calculator. This engineering calculator determines the area, moment of inertia, radius and modulus which are the sectional properties of the square tube by just entering the input data of exterior side and interior side.

### Example:

Calculate the area moment of inertia section properties of square tube beam if the interior and exterior sides are 5 and 8 respectively.

#### Solution:

Inertia = (8^{4} - 5^{4}) / 12

= 289.25 mm^{4}

Modulus = (8^{4} - 5^{4}) / 6 x 8

= 72.3125 mm^{3}

Radius =√ ((8^{2} + 5^{2}) / 12)

= 2.7234 mm

Area = 8^{2} - 5^{2}

= 39.0000 mm^{2}