Browse Forums Building A New House Re: Downpipes into aggregate 4Aug 20, 2010 8:42 pm davidj So what was the throught process? I think my builder has downpipes running into the aggy pipes. Is this bad? Not necessarily (depending on your block layout) but it could be better. Our situation is a little unique in that the extension is being built where the water from much of the block runs to, which makes the problem a bit worse. In short, the thought process is around minimising the workload on ag-pipe - its job is to keep silt out, but let water in. The more you push water into ag-pipe, the more it has to filter silt, the sooner is blocks up (over time) and becomes less effective. But ag-pipe is not selective in the way it passes water. Running a downpipe into ag-pipe is actually counter productive - if you feed it in the top, it will just pour out the bottom again, raising the sub-surface water until it reaches the height on the ag-pipe again, then re-enters it again to supposedly flow more easily along to another destination! So, downpipe into ag-pipe effectively takes relatively clean water and adds silt to it then has to remove the silt again on re-entry. That's a bit nuts. I hope that makes sense Devkop The good news it is super easy to fix. Just get your plumber to divert it to the other side of the window. But for those people who are wondering what the… 2 1711 Last year I had a gas leak at my house. 3 days later, I have about 1 sqm of my exposed aggregate paving broken up. I am not sure how to go about getting it repaired… 0 10411 |