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One last question: The photo at the beginning of the thread shows copper up to the Johnson Tee whereas I've also seen photos with PVC, like this: Is there any good reason not to use the PVC (it would make it much easier to get the drain exactly where I want it)?

Good tip - thanks.

I don't like the standpipe. It looks like I'll make my own Johnson Tee out of PVC parts. It will be on an interior wall about 12" from the exterior wall and I plan to run a length of PVC to the exterior vent. Any problems with that idea? Should it slope down 1/4" toward the exterior...

Supply house says air gaps haven't been required here for a while and they don't carry Johnson Tees.

Yep - I was able to find that name on the interwebs. I haven't found anyplace that sells it online. I'll take a drive over to my local supply house and see if they carry it. Does anyone know where to buy one online? This is what the outside looks like: If I could easily connect the...

That's what I figured. I think I'll go with SewerRat's setup above. What does that look like outside of the house? - Just a PVC pipe sticking out of the wall, (mine is vinyl siding) or is there something more outside? Finally, if I use 1 1/2" PVC for the drain, what size pipe should I use...

One of the recommended installation methods for mine (Fisher & Paykel) shows the drain hose being looped up high and inserted into a standpipe. I'm guessing that would eliminate the need for an air gap, but it looks like its asking for trouble. I'd rather a backup be directed outside than into...

SewerRatz - Great photo! This setup is perfect for my kitchen remodel as the dishwasher and sink will be on adjacent walls. What's the minimum size for the copper pipe? I assume there is some type of brass fitting to clamp the dishwasher hose to but I can't tell from the photo...

Not without buying a length of it. I've already built the shower pan around the Kohler drain.

I plumbed the drain using standard PVC and have access to it through a crawl space. I'm not a plumber, but a pretty experienced do-it-yourselfer. With either 2" or 3", the fit is not at all snug and the fitting can fall right off.

I am using this Kohler K-9136 tile-in shower drain: http://www.us.kohler.com/onlinecatalog/detail.jsp?item=13190702 Installation instructions: http://www.us.kohler.com/onlinecatalog/pdf/1090854_2.pdf I think this is made to be solvent welded to schedule 40 PVC but the fit is very loose...