Hello!
I'm considering a renovation in our house including, among other things, a new bathroom. To solve the drainage issue, I would need to run sewage pipes "across" parts of the existing floor joists. Is it possible, and if so, how do you do it?
Grateful for any tips!
/Hubbe
I'm considering a renovation in our house including, among other things, a new bathroom. To solve the drainage issue, I would need to run sewage pipes "across" parts of the existing floor joists. Is it possible, and if so, how do you do it?
Grateful for any tips!
/Hubbe
It's a bit complicated to run plumbing "crosswise" in a beam structure. It's something that's avoided even in new construction. To be able to do it, you need to create offsets. These, in turn, depend on the load cases that are relevant for those specific beams in your building's beam structure. To avoid the risk of settling or collapse, you should have a structural engineer look at it and propose how you should offset.
As mentioned, there's a reason why wet room units are designed directly above each other to avoid diagonal routing. You might want to review your plans again.
As mentioned, there's a reason why wet room units are designed directly above each other to avoid diagonal routing. You might want to review your plans again.
Exactly, it should be planned at an early stage! Especially the 110 pipes, they should not be run across a 220 floor joist at all. These tips/advice also apply to ventilation as well 
The smaller dimensions, however, can be run across by drilling in the center of the beam and reinforcing the floor joist there by, for example, glue-screwing plywood strips on both sides of the hole!
http://www.familjenlindstrom.se/images/golvbrunn_0.jpg
http://www.familjenlindstrom.se/images/vvs.jpg
The smaller dimensions, however, can be run across by drilling in the center of the beam and reinforcing the floor joist there by, for example, glue-screwing plywood strips on both sides of the hole!
http://www.familjenlindstrom.se/images/golvbrunn_0.jpg
http://www.familjenlindstrom.se/images/vvs.jpg
I have a 1-meter long 4mm plate on both sides of the beam where I drilled a hole, but only for a 75-pipe. I screwed the plate in place with multiple screws. I moved the toilet to avoid drilling more into the joist. It even resulted in a better layout for the bathroom after this
It is possible to go through beams if you reinforce properly with 22mm laminated and screwed plywood. It also depends on the dimension of the beam, of course.
The easiest way is to do the reinforcement before making the hole. Reinforcement should be done on both sides of the beam and preferably in an area where the beam is lowly loaded. Above a load-bearing line or between two closely spaced load-bearing lines. In other words, check how your walls on the lower floor align.
It doesn't hurt to ask a designer to come out and take a look.
/CC
The easiest way is to do the reinforcement before making the hole. Reinforcement should be done on both sides of the beam and preferably in an area where the beam is lowly loaded. Above a load-bearing line or between two closely spaced load-bearing lines. In other words, check how your walls on the lower floor align.
It doesn't hurt to ask a designer to come out and take a look.
/CC
Note: If the beam continues continuously beyond the bearing line, it is not advisable to pass through right there.
A continuous beam has its maximum moment at the internal supports!
A continuous beam has its maximum moment at the internal supports!