soil pipe

Hi, the horizontal length of 4” pipe from cistern frame to the face of the 92.5 degree bend which goes into the main stack pipe, is 1400mm and has a fall of 45mm i.e 1:31.6, is this okay? I’m aware 1:40 is the standard. See attached for more details. Also the joint of the bend and the 4inch...

I currently having an issue with rats in my loft space. I believe they are coming though my soil pipe and climbing that until they are on the roof guttering. I can stop that partially by blocking the soil pipe with a rat stop product. However, I also have a downspout that goes from the roof into...

Hello, I previously thought I had a problem with leaking ventilation ducting from an extractor fan vent in the loft caused by steam from the shower fan and/or a leak in the roof. This originally started as a nail had pierced the flexible ducting used to connect the 2 pipes in the loft and...

I’ve recently fitted a concealed grohe cistern (this one https://www.grohe.co.uk/en_gb/rapid-sl-3-in-1-set-for-wc-0-82-m-installation-height-38773000.html) and am now fitting the wall hung pan (...

Hi there, let me just start by saying I am no plumber or expert and am looking for some advice on doing my first 'big' DIY project of turning a small bedroom into a bathroom, specifically with the toilet. I want to put the toilet below the window on an external wall which is upstairs and...

Hi, I have an 8 foot section of a cast iron stack that is failing and is from ground to plastic above. It was originally external but is now internal to a garage (and tucked in to the corner). It just serves the upstairs bathroom and all inlets are in the higher level plastic pipe. The CI...

I am working on a project where a (proposed) internal Soil stack clashes with a partition. It is being proposed that the stack is vertically offset from the vertical by ~5 degrees (300mm over 3.3m). I am struggling to find anywhere within CIBSE / BS that mention offsets from the vertical. Does...

Hi All, We are going through a cellar to basement project and just want to ask a few details about the drainage layout and what offers both building regulation coverage, but also what is the most practical solution. We aren't 100% tied to the layout so if a more suitable layout would be...

The original cracked/leaking clay drainage of the house has been disconnected and partially removed, with an inspection chamber installed as described in this thread (thank you to those who so kindly offered advise) We have temporary drainage set up & need to figure out the next step. This is...

The soil pipes from our two toilets are ascending for a short distance - just under 400mm to the external wall. This seems a bit odd to me, but I am not in the building trade so don't know much about plumbing. The toilets work, but the do seem to block quite often. I am not sure if it is because...

Afternoon All, I have a detached garage which I wish to have a waste pipe installed in for a dog grooming bath. The new build house has an internal soil stack in the corner closest to the garage. Plan is to dig up the garden alongside the garage and run a 6m long soil pipe just under the house...

Hi, I would very much appreciate you input on my project. Project: I am building a side extension which incorporates a new WC. My build will go over existing sewer pipes and manholes. Status: I have planning council permission and now I wish to obtain Thames Water Build Over permission...

Can i use a 45 degree bend in the middle of a soil pipe run. I have to install a new inspection chamber, cannot get it square on to the existing chamber due to falls etc so would need a 45 about 2 meters from each chamber. Is this acceptable to building regulations and is it sensible. I know...

Can i put a step in a drain run? Down obviously not up, i would assume it needs to be rod-able from both directions but would it work? I have a reinforced ground beam to get over. The invert of the drain is the same height at the middle of the ground beam so i was proposing 110mm pipe over the...

Hello, I'm attempting to lay the soil pipe and inspection chamber on part of my extension myself (a new toilet) so did a few calculations and below is my toilet, two inspection chambers and the main sewer outlet that I believe I need to accommodate the change in directions. From what I've been...

So I recent got around to decorating the spare bathroom its always had a spot on the ceiling where the previous owners said they experienced a leak but had fixed. Anyway i came to sanding the spot down for a new coat of paint and noticed some dampness. http://imgur.com/a/4dBSo Upon...

Hello, A plumber has just installed a new waste pipe for a new bathroom which runs approx. 7 meters. I was skeptical about his work so thought i'd have a look at what was done. The first 1 - 1.5 meters of the pipe has a slight upward incline on it (tested with a spirit level) before it declines...

Good Morning I bought a house last year, which includes an outhouse which used to house a downstairs toilet. I was looking into the possibility of turning it into a downstairs bath/shower/toilet room as the upstairs bathroom is quite small. It seems the old owner has closed off the Soil pipe...

Hi.... A damp patch on an upstairs bathroom ceiling took me into the loft - I found the source of the leak was a dripping flexible pipe that connects the soil pipe to a vent in the roof. The outside of the pipe was dry - but inside contained about 2 litres of water which had collected in the...

Moving WC/waste in bathroom. We’ve unearthed and cut back the soil pipe as required. In doing so we’ve removed the DPM back to the edge of our trench (about 30 x 60cm). I’m concerned we should make good the DPM. I've considered removing more floor to expose good DPM so we can patch it somehow...