Re: Crossing (thin) joists with pipes: reinforce?

[Lurch]

On 31 Mar 2004 00:31:40 -0800, in uk.d-i-y [e-mail] (Lobster) strung together this:

I'm installing a bath which for various reasons has a rather awkward >drainage configuration. I need to get the waste pipe across a room to >the soil stack, and the only way of avoiding a nasty area of boxed-in >piping at ceiling level is to cut holes or notches through about 4 >joists; and I'm quite sure these aren't strong enough as they stand to >cope with this. >

What about chasing the waste in at ceiling level. 1 hidden pipe and no boxing.

[PJ]

Pumps are perfectly acceptable and are often used in remote bathrooms. As are toilet pumps. I'd strongly consider it, using 22mm pipe or tube.

[G&M]

I think you'll find your BCO may insist on 32mm solvent weld pipe for pumped waste water. I wanted to use flexible plastic pipe to ease the tortuous route needed and got told no way.

[chris French]

In that case can't you just run it above the floor and box it in?

[Lurch]

On Thu, 1 Apr 2004 20:50:05 +0100, in uk.d-i-y chris French strung together this:

Apparently there's a door in the middle.

[Zymurgy]

This sounds a good option. Notches in joists to take a waste pipe will be huge. It's not like notching in a water feed pipe ..

P.

[chris French]

In message , Lurch writes

Is there? it hasn't been mentioned, however, it would explain the conundrum.

[Lobster]

But given the need to traverse the joists at right-angles, I'd only have the depth of the lath-and-plaster on the ceiling to bury a 1.5" diameter pipe!

David

[Lobster]

Thanks. Could you point me at any suppliers of these on the web? I must admit I've never seen them (other than Saniflos)

David

[Lurch]

On 2 Apr 2004 04:59:15 -0800, in uk.d-i-y [e-mail] (Lobster) strung together this:

Sorry, could have explained that a bit better. I was meaning on the wall, in the room below the bathroom, at the top by the ceiling. I've just done something similar today in my downstairs wc.

[Hamie!]

You could build what (I think) the Americans call a tray ceiling. Where a cross section looks (Sort of) like

|--------------------------------------------| | | | | | | | | |------ -------| | | | | | |

This way the boxing goes all the way around the ceiling, and you can hide all sorts of services in there...

[Capitol]

I've seen a false floor inserted to solve this problem. Added about 3" to floor level, which was achieved by ramping the entry.

Regards Capitol