Middlesex County, Ontario | The area moment of inertia is what describes the capacity of a cross-section to resist bending.
The formula for the moment of inertia of a rectangular cross section is bh^3/12.
For 6” wide by 4” tall that’s (6x4x4x4)/12=32
For 14” wide by 3” thick that’s (14x3x3x3)/12=31.5
The two proposed dimensions have basically the same resistance to bending if made from the same material. |
Dtawbar engineering
