C16 or C24

M

marsaday

I only need to use C16 joists for my new floor, but thought the cost difference of using C24 is pretty small. Are there any benefits of using C24 timber ?
 
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They are about 30% stronger and 20% stiffer.

So the benefit will be that they will deflect less than C16 joists.

Or, if your span is 3.5m or less, you could use 50x150 C24 and gain 25mm head height.
 

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