Reinforce floor joist for drainpipe

[Derbyboy]

My drain (50mm) in the bathroom wall comes down into the floor joist (50x210). I would need to carve about 30mm off the floor joist.

Can I attach a joist on the outside that I carve 20mm into?

Thus, I would have a "new" joist at 95x210mm with a 50mm notch in it.

 

[Villa vista]

Sounds like you're getting mostly the same strength in the beam after the procedure. Is the va-stam close to the support for the floor joist? If yes, then it's completely fine!

 

[Derbyboy]

There is a crawl space underneath. The reason for my question is that I

1) am concerned about the centimeters in the bathroom.

2) I could move the wall so I get a few centimeters less bathroom, but it would also mean that the old electrical wires (VP-pipes) will come down from the ceiling outside the wall.

 

[Derbyboy]

What comes down from the ceiling are 4-5 VP-rör. If I move the wall inward in the bathroom, these will end up outside the new wall. I have to open up quite a bit to move the bends from the ceiling. I thought it would be easier to modify the floor rule.

 

[vectrex]

There is a crawl space underneath. The reason for my question is that I

1) am protective of the centimeters in the bathroom.

2) I could move the wall so I get a few centimeters less bathroom but it would also mean that the old electrical wires (VP pipes) come down from the ceiling outside the wall.

[image]

Is this a picture from above? If so, there are absolutely no problems with doing it this way. If you screw and glue the 45x195 beam, you even get better support than before.

 

[Derbyboy]

Yes, the image in post 3 is from above.