How much tolerance floor joists?

[Ben47]

Are there established tolerances for how much floor joists can deviate in their three dimensions?

Image for inspiration.

 

[Plupp 405730]

Here are some tolerances on planed timber:

Source: https://www.traguiden.se/om-tra/materialet-tra/sagverksprocessen/sagprocessen/dimensioner/

 

[Ben47]

Here you have some tolerances for planed wood: [image]

Source: [link]

That was nice. Now I'm wondering what is allowed when they are in place, for example as a base for chipboards with different center-to-center distances...

 

[Plupp 405730]

That was nice. Now I'm wondering what is allowed when they are in place, such as the subfloor for chipboard with different cc distances...

It is the surface floor itself that determines the tolerances, for example, parquet flooring, so you have to look at their requirements for evenness.
This is how Kährs says the subfloor should be...


https://www.kahrs.com/globalassets/...5s/advice-installing-kahrs-woodloc5s-2017.pdf