Timber depth for noggins

BarraOG

I need to strengthen an upstairs floor with extra noggins and a single extra joist along the wall. I measured the existing joists and they are 220mm deep give or take a millimetre or two, either way. Width is 45mm. The stamp on the timber says TR26. I'm a bit confused when looking online at timber as I'm seeing 220mm and 225mm mentioned. What should I ask for in the hardware shop to get closest to what I have? C16 9x2 rough?

10-10-20

Hi! You might be best off bringing a tape-measure to a builder's providers and have a walk around the yard and size-up. There will be rough cut wood (as opposed to planed) and it's that which you need.

https://www.goodwins.ie/construction-treated-timber/c-266.html

Explosive_Cornflake

Is the extra joist just doubling up another one? If so, anything smaller is fine. Same for the noggins.

For strength, I'd suggest for the joist you want a C24 rather than C16

BarraOG

https://www.boards.ie/discussion/comment/121630062#Comment_121630062

It's for doubling up along a wall where the joist is covered by the wall. I can measure if possible or just go for something smaller. I'll try and get C24 too. Thanks!

BarraOG

https://www.boards.ie/discussion/comment/121630019#Comment_121630019

Thanks. I'll have a walk around the yard but theyre not always patient when it comes to "stupid" questions. :)

standardg60

When you say you need to strengthen what issues are you having? Be unusual to need to strengthen joists of that size

10-10-20

https://www.boards.ie/discussion/comment/121630582#Comment_121630582

Brooks and Chadwicks in Sandyford have both been softened up by me and my wheelbarrow of **** questions. 😊 They both have large and accessible yards for wandering around.

mickdw

Get slightly smaller for the noggins.

If the only issue with the joist is that it's covered by wall, fixing a 4 x 2 to it might get you out of trouble in terms of getting a floor fixing.