Hollow rectangular beams find frequent application in construction sites, valued for their capacity to withstand bending and axial loads. Moreover, they exhibit superior resistance to torsional forces compared to I-beams. An online calculator is available for those needing to calculate the deflection of a hollow rectangular beam. Just input the length, width, height, and wall thickness, choose the material, and initiate the calculation to obtain the beam’s deflection value.
Hollow Rectangular Beam Deflection formula
![\[Inside width = Width - (2 \cdot Wall Thickness)\]](https://x-calculator.com/wp-content/ql-cache/quicklatex.com-c82b2bea122f063350bdf523456ae83e_l3.png "Rendered by QuickLaTeX.com")
![\[Inside height = Height - (2 \cdot Wall Thickness)\]](https://x-calculator.com/wp-content/ql-cache/quicklatex.com-401beef28f9406493b266519dff6d88d_l3.png "Rendered by QuickLaTeX.com")
![\[MI \text{ for hollow rectangle beams } = \frac{\left(Width \cdot Height^3\right) - \left(Inside_width \cdot Inside_height^3\right)}{12}\]](https://x-calculator.com/wp-content/ql-cache/quicklatex.com-1562127b4530c729cae42535f6ad70f5_l3.png "Rendered by QuickLaTeX.com")
![\[Deflection = \frac{\left(Length^3 \cdot Force \right)}{\left(3 \cdot Material \cdot MI\right)} \cdot 0.0393701\]](https://x-calculator.com/wp-content/ql-cache/quicklatex.com-e46763c9bc78cdc1521f7ab63419f982_l3.png "Rendered by QuickLaTeX.com")
![\[Bending Stress = \frac{Force \cdot Length}{MI \cdot \left(0.5 \cdot Height\right)}\]](https://x-calculator.com/wp-content/ql-cache/quicklatex.com-ced794bdc356ca06ddce6a166276285b_l3.png "Rendered by QuickLaTeX.com")
Where:
- MI = Moment of Inertia
- E = Modules of Elasticity in psi
