Best way to strengthen this joist notch?

[barki]

Hi all,

This is in my own house. I'm not panicking because it has been there years (don't know exactly how many).

It's in the middle of a roughly 3m span across the room (I know...) and it's probably 40% joist depth. Just one joist is notched like this. There is already a piece of ply screwed to the side like a 'sister' which is better than nothing but it only extends perhaps 150mm each side.

The bit that really concerns me is that two of the feet of a freestanding bath sit midway between this joist the the next (which isn't notched).

I'm considering fitting a steep strap. Possibly a right angled one along the bottom.

Any thoughts on the best approach? Sistering the whole length would be alot of work. There is currently floorboards & 8mm ply & vinyl & skirting on top of all this, this access easiest from below via kitchen ceiling. In hindsight it wouldn't have been better to resolve this when the photo was taken, alas.


Really grateful for any thoughts.


Maybe fit one of these from underneath? :

 

[barki]

Steel right angled bracket

 

[foxhole]

You could sister from other side , screw and glue , span as far as is practicable .

 

[barki]

Thanks for responding.


Wouldn't the sister also needs a notch of the same depth to accommodate the pipe?

 

[Dereekoo]

Something like this perhaps on the other side of the joist

 

[barki]

You could sister from other side , screw and glue , span as far as is practicable .

Sorry to resurrect this.

With this approach, the sister would need notching too, same dimension as the original.

Is it still worth doing?

 

[foxhole]

You can notch much closer than existing , you could also add noggins.

 

[johnny2007]

Metal plate.

 

[robinbanks]

Cut a length of hardwood a mm longer than the gap at the top and hammer it in, deep as you can get with the pipe there. Could warm the pipe and flatten it a little for some extra mm

Edit : just read that the flooring has been refitted already and youre doing from below

Hammer it in sideways instead(place in place above the pipe and hammer in the direction of the pipe)