Browse Forums General Discussion 1 Sep 20, 2011 11:28 am Hi, the downpipes and waste pipes around the house all have large concrete boxes around them. They are D shaped, and around 300mm high. I'm wondering what the purpose of these are, we're building a deck and there are 6 of them along the wall for assorted pipes which are in the way of the beams. Can we remove them? and how? Would we need to get a plumber in or could we carefully chip away the concrete from around the pipes? Sorry about the small photo, but hopefully it helps... 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 4916 |