Thread: Chris's Villa Build in Phnom Penh Cambodia

Originally Posted by ChrisInCambo

But nowadays most modern builds have a single drainage system, so the pipe on your sink will go direct to the septic tank and the smells will come back the other way without a trap somewhere in between.

not true

it used to be that way but modern regs state that only the toilet goes into the septic tank, the "grey" waters go into the soakaway after it

^^ I'm not an expert just passing on what I've been told, but my Dutch mate who did the designs is head of M&E for a large firm that does most of the big contracts here, embassies, airports and such, he seemed to think this is the way it's done these days especially in hotter climates (no idea why that might be) and the two pipe system is old school.

Here's a wikipedia link to exactly the type of design I'm talking about - Drain-waste-vent system - Wikipedia, the free encyclopedia