Deflection after self-leveling compound...

Rottis · 2009-08-06T23:48:17+00:00

Hi! I have screeded a future bathroom on the second floor, but now the tiler has noted that the floor has some give.:mad: Discussed the issue under "Bathroom" but continue here. The problem is probably the joists, 80x230 c/c 60 with a span of 7-8 meters! The span is likely too long and needs to be shortened. I have the possibility to do this as we are planning to build an arch between two rooms on the lower floor, which would then be approximately in the middle of the joists. How do you support the joists from underneath? Do you have to lift the joists a few tenths so it becomes tensioned against the new crossbeam below? How do you do that if so? I assume it's NOT enough to support against the ceiling and I need to get to the actual joists!? How strong should the timber be? How do you design the fittings? Otherwise, we have followed the rules with cross laid c/c 30, 22 mm chipboard, rot-net over the entire floor, minimum 13 mm screed, etc.

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Rottis

#16

Member · Östergötland

· 23 posts

22 Aug 2009 at 9:16 AM

Rottis

Member

Östergötland
23 posts

22 Aug 2009 at 9:16 AM

I have now acquired a glulam beam of 90 x 180 mm, which according to calculations should suffice for an opening of 2m.
Now it's just a matter of getting it up the right way

Deflection after self-leveling compound...

Rottis

Rottis

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