Height of S-trap?

**montiee** · 27th March 2008, 10:24 PM

I have a little bit of a dilemma. The guts of the kitchen is ripped out and so there are no cabinets, sink, drainage and the gyproc for that matter

.

As part of the repair I also needed to replace the fibro sheet on the outside wall so need to carve out a hole as well. With the deferral of the kitchen for 6-8 months I'm in a little bit of a spot because I bought a dishwasher and would love to use it so I'm doing things @rse backwards

There is no drainage piping installed (all of it was ripped out) so I need to make it all up from scratch including cutting a hole in the fibro wall to run the PVC into the existing drain. My problem is that without a sink or kitchen benchtop in sight how can I chose the best height for the drainage so that when the real kitchen comes along I'll need to redo minimal work because at least I got the heights correct. I realise I may need to extend or shorten a pipe or whatever horizontally to align the sink with later.

Does anyone have any diagrams of the height the S-trap etc should sit at above the floor to make it mate easily with a standard sink on a standard benchtop?

TIA

PS: Probably overthinking things aren't I. Chances are I'm going to have to rip out the pipes anyway when the kitchen comes eh?

The thing is that I want to at least get the hole in the fibro at the right height to make things easier going forward. Don't fancy having to repatch it later.

**wonderplumb** · 28th March 2008, 05:32 AM

Wait for your kitchen to come and dont cut the hole until you are ready for the waste, you will save yourself a lot of heart ache.

**Tools** · 28th March 2008, 08:22 PM

Bring the pipe up through the floor for an s-trap. If you want it from the wall you need a p-trap.

Tools

**montiee** · 28th March 2008, 11:15 PM

Originally Posted by wonderplumb

Wait for your kitchen to come and dont cut the hole until you are ready for the waste, you will save yourself a lot of heart ache.

Not really an option. I want to use the dishwasher in the meantime and the kitchen is 6-8 months out at least. I know this is not the way to do it but it's going to get done

It's just a case of giving myself the best possible chance. I think I have come up with a reasonable compromise below. While at bunnings I realised the sinks can vary in depth etc and there really is no standard height for the s-p trap arrangement. It really depends upon the sink.

Originally Posted by Tools

Bring the pipe up through the floor for an s-trap. If you want it from the wall you need a p-trap.

Tools

Yeh been thinking about this but can't bring it up through the floor because the drainage is on the outside (clay pipes) so it would require alot of work getting it through.

I initially went into bunnings to buy some seals for the old s-trap when I noticed they sold complete units (S-P traps depending upon how you twisted them) for a dollar more so it offers me flexibility going forward.

I plan to probably install the hole lower in the wall and through the wall leaving the pipe longer than needed so later I can cut it back later on and add right angle bit and get the right height that way (see ascii diagram below). In the mean time rather than try to guess the s-p trap height I'll terminate it at the bottom on the pipe I just ran through the wall. Later when the kitchen comes in I'll pull it off (since it's just a rubber seal and screw cap) and I'll add a few bends to get it into place. Just need to make sure I account for kickboard height + cabinet thickness so that it heads into an empty space rather than the actual carcass of the cabinet.

I hope that makes sense

PHP Code:


          +Wall 
          + 
          + 
          + 
          + 
   |========== (s-p trap) 
   |      + 
   |      ++++++++++++++ 
   |      +      (floor) 
 Drain    +

**wonderplumb** · 29th March 2008, 12:17 AM

Thats the shot, drill it out as low as you think is possible and you should be right.

**Pulse** · 29th March 2008, 09:35 AM

just above the floor would be OK, you can then run it horizontally under the kitchen cupboards in the 150mm space behind the kickboards. You can then bring it up in the cupboard beneath the sink.

Cheers
Pulse

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