Röris's poor drilling in the floor beams

[Frallan 12]

I have a company at home for bathroom renovation. They were supposed to run water pipes through the ceiling/joists, and when I look at what the plumber is doing, I see this drilling in the beams and tell him to stop.

I've understood that you should space the holes at least 30cc apart and try to have them centered. His drilling is 2-5cm apart, and the lowest holes are only 2cm from the bottom of the beam.

To top it all off, he has made 6 holes in one of the beams exactly where it bears the weight of another cross beam. It's hard to see how they will be able to reinforce the beam with plywood on each side since it's a beam hanging on one side.

It undoubtedly looks bad, but how concerned would you be?

 

[Farstatjej90]

Do they have to go through the beams? Seems like there's plenty of space underneath..🤔

 

[Frallan 12]

Do they have to go through the beams? There seems to be a lot of space underneath..🤔

Want to avoid the water pipes in the ceiling in the new bathroom

 

[AXS]

You can attach flat iron underneath for extra strength. 30x6mm or similar will handle incredible tensile loads. Add plywood on the sides where possible, and you can sleep easy afterwards.

 

[Håbbe01]

I have a company at home for bathroom renovation. They were supposed to run water pipes in the ceiling/joist space, and when I look at what the plumber is doing, I see this hole drilling in the beams and tell him to stop.

I've understood that holes should be distributed at least 30cc apart and try to have them centered. His drilling is 2-5cm apart, and the bottom holes are only 2cm from the bottom of the beam.

To make matters worse, in one of the beams, he has placed 6 holes right where that beam supports the weight of another crossing beam. It's hard to see how they will be able to reinforce the beam with plywood on either side since it's a beam that hangs on one side.

It undeniably looks bad, but how worried would you be?

There are some tips here
https://www.traguiden.se/konstruktion/konstruktiv-utformning/stomme/bjalklag/barformaga--bjalklag/

 

[Hank_Ö]

The painter will fix that!

 

[Frallan 12]

Update, brought in a constructor who recommended reinforcement with a 1.5m 45x220 beam that is glued and screwed together on each beam.

 

[classelagare1]

It's hard to see the span of the beam, what's above it, etc., but it seems like the hole is close to the wall that the beam rests on. In that case, I wouldn't be particularly worried unless there's some extreme weight above. Look at a lightweight beam, and you'll see that it's only the outermost parts that make a significant difference in what it can withstand. That the hole looks rough is another matter, but if it's going to be built-in, it doesn't matter.