Floor joist span

[yardie]

Looking for a bit of info so shall be asking possibly dumb questions in the foreseeable future.

But firstly,

For a 4.8m clear span would C24 220x72 at 400c/s be suitable?
There will be a NLB wall running perpendicular.

2 storey ext, no bath.

Sorry if thats not enough info.

 

[jake7462]

Yes will be fine

 

[^woody^]

Wouldn't engineered joists be better?

 

[yardie]

Wouldn't engineered joists be better?

Do you mean like posi-joists? For ease of electrics/plumbing etc.. or cost saving? i.e more cost effective than buying 5m lengths of 9x3 c24 timbers

 

[^woody^]

There may be a cost saving plus ease of services, I was thinking more of the ease of handling and supply of such chunky timbers.

I've not checked the prices of engineered joists for a long while, so I'm not sure of cost comparisons, but it used to be favourable for long timbers of large section sizes

 

[yardie]

Thanks.
Would floor/ceiling levels be a problem 'mixing' timbers with engineered? Don't want unsightly steps etc...
Using 9x3 timber perpendicular to the engineered joists, not mixing them!

 

[23vc]

You can always pack out with 2x1s or 2x2s to make the ceiling levels marry up