Moment of inertia for 2-2x4s is 1/4th the MOI for 2-2x12's.
The clear span for the 2-2x4's is 1.33' which is 1/9th the length of the 2x12's.
As you can see, just looking at proportions of eachother it's obvious the 2x4s are stronger.
Moment of inertia for 2-2x4s is 1/4th the MOI for 2-2x12's.
The clear span for the 2-2x4's is 1.33' which is 1/9th the length of the 2x12's.
As you can see, just looking at proportions of eachother it's obvious the 2x4s are stronger.
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