4. DETERMINING RIGHT SECTIONAL SIZE

Minimum Required Sectional Properties

1. Bending Moment of Inertia : Ix = 47.9 in^4
2. Iy = 30 in^4
3. Torsional Moment of Inertia J = 70.2 in^4
4. Cross sectional area A = 2.6 in^2

Design steps

Choose a section that meets the above requirements

Proposed Design

There are quite a lot of design alternatives available, the following is one of the designs




The above section has the following properties :
• Bending moment of inertia Ix = 593 in^4
• Bending Moment of inertia Iy = 33 in^4
• Polar / Torsional M.I J = 89 in^4

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