Joists...

[JOW]

*snip*
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I can also say good luck with it not creaking, maybe not when it's newly laid but it will happen.
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What do you mean? Do you mean that 45x220 is thin for 3.75m span?

 

[huggan]

No, I said that such a rule with that length can almost support 1.5 tons, however, the floor creaks. That's what I meant.

 

[Denar]

Have you thought about lätttbalkar?

 

[JOW]

Okay, it was just that to my ears the word "knakar" refers to the beam, breaking, and "knarr" occurs in the floor due to the flex in the beam... but now I understand what you mean...