Browse Forums Building A New House agi pipes and drainage connections 2Sep 20, 2018 7:32 am The way mine was designed, agi pipe terminated to a silt pit, from the pit it is then directed to storm drain. It could be your builder haven’t put in the silt pit yet. The pipe in the photo doesn’t look like an agi pipe though. It’s usually a PVC pipe wrapped around by geo texture material. Building Standards; Getting It Right! It's all good. You can get both wye piece and the coupling with or without thread. The cost difference is negligible and means the plumber only has to carry the single… 1 3819 Building Standards; Getting It Right! Thank you for the generous offer. I need to get the plumber out to give me an explanation. As mentioned I haven't seen any rain water discharge from pipes 1& 3. It… 7 7453 Need more photos from around the house including your gutters. We have had 3 of the wettest years in a row for some time so that wouldn't be helping 3 5773 |